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#compdef git git-add git-am git-annotate git-apply git-applymbox git-applypatch git-archimport git-archive git-bisect git-blame git-branch git-cat-file git-check-attr git-check-ref-format git-checkout git-checkout-index git-cherry git-cherry-pick git-clean git-clone git-clone-pack git-commit git-commit-tree git-convert-objects git-count-objects git-cvsexportcommit git-cvsimport git-cvsserver git-daemon git-describe git-diff git-diff-files git-diff-index git-diff-stages git-diff-tree git-fast-import git-fetch git-fetch-pack git-fmt-merge-msg git-for-each-ref git-format-patch git-fsck git-gc git-get-tar-commit-id git-grep git-hash-object git-http-fetch git-http-push git-imap-send git-index-pack git-init git-instaweb git-local-fetch git-log git-lost-found git-ls-files git-ls-remote git-ls-tree git-mailinfo git-mailsplit git-merge git-merge-base git-merge-file git-merge-index git-merge-one-file git-merge-tree git-mergetool git-mktag git-mktree git-mv git-name-rev git-octopus git-pack-objects git-pack-redundant git-pack-refs git-patch-id git-peek-remote git-prune git-prune-packed git-pull git-push git-quiltimport git-read-tree git-rebase git-receive-pack git-reflog git-relink git-remote git-repack gut-runstatus git-config git-request-pull git-rerere git-reset git-rev-list git-rev-parse git-revert git-rm git-send-email git-send-pack git-sh-setup git-shell git-shortlog git-show git-show-branch git-show-index git-show-ref git-ssh-fetch git-ssh-upload git-status git-stripspace git-svn git-svnimport git-symbolic-ref git-tag git-tar-tree git-unpack-file git-unpack-objects git-update-index git-update-ref git-update-server-info git-upload-archive git-upload-pack git-var git-verify-pack git-verify-tag git-whatchanged git-write-tree

# TODO: All if (( words[(I)-option] )) should be turned into
# if (( words[(I)-option] > 0 && words[(I)-option] < CURRENT )), as the user
# may go back and want to add an option before -option and in that case should
# be able to complete whatever may come before -option.

# TODO: suggested zstyles:
#
# zstyle ':completion::*:git-{name-rev,add,rm}:*' ignore-line true

_git() {
local nul_arg abbrev_arg find_copies_harder_arg diff_l_arg pretty_arg exec_arg
local author_conversion_file_arg long_author_conversion_file_arg verbose_arg
local help_arg template_arg shared_arg thin_arg author_conversion_file_arg_spec
local -a diff_args fetch_args merge_args force_ref_arg tags_fetch_arg
local -a upload_pack_arg common_fetch_args common_apply_args
local -a revision_arguments

nul_arg='-z[use NUL termination on output]'
abbrev_arg='--abbrev=-[set minimum SHA1 display-length]: :_guard "[[\:digit\:]]#" length'
find_copies_harder_arg='--find-copies-harder[try harder to find copies]'
diff_l_arg='-l-[limit number of rename/copy targets to run]: :_guard "[[\:digit\:]]#" number'

diff_args=(
  '--diff-filter=-[select certain kinds of files for diff]: :_guard "[ACDMRTUXB*]#" kinds'
  $find_copies_harder_arg
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--name-only[show only names of changed files]'
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--name-status[show only names and status of changed files]'
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)'{-u,-p}'[generate diff in patch format]'
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--stat=-[generate a diffstat instead of a patch]:: :__git_guard_diff-stat-width' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--patch-with-stat[generate patch and prepend its diffstat]' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--patch-with-raw[generate patch but also keep the default raw diff output]' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--raw[generate the default raw diff output]' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--numstat[generate a more machine-friendly diffstat]' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--shortstat[generate a summary diffstat]' \
  '(--name-only --name-status -u -p --stat --patch-with-stat --patch-with-raw --raw --numstat --shortstat --summary)--summary[generate a condensed summary of extended header information]' \
  '-B-[break complete rewrite changes into pairs of given size]: :_guard "[[\:digit\:]]#" size'
  '-C-[detect copies as well as renames with given scope]: :_guard "[[\:digit\:]]#" size'
  $diff_l_arg
  '-M-[detect renames with given scope]: :_guard "[[\:digit\:]]#" size'
  '-O-[output patch in the order of glob-pattern lines in given file]:file:_files'
  '-R[do a reverse diff]'
  '-S-[look for differences that contain the given string]:string'
  '--pickaxe-all[when -S finds a change, show all changes in that changeset]'
  '--pickaxe-regex[treat argument of -S as regular expression]'
  '--full-index[show full object name of pre- and post-image blob]'
  '(--full-index)--binary[in addition to --full-index, output binary diffs for git-apply]'
  '(        --no-color --color-words)--color[show colored diff]'
  '(--color            --color-words)--no-color[turn off colored diff]'
  '(--color --no-color              )--color-words[show colored-word diff]'
  '--no-renames[turn off rename detection]'
  '--check[warn if changes introduce trailing whitespace or space/tab indents]'
  '(-a --text)'{-a,--text}'[treat all files as text]'
  '(-b --ignore-space-change -w --ignore-all-space)'{-b,--ignore-space-change}'[ignore changes in amount of white space]'
  '(-b --ignore-space-change -w --ignore-all-space)'{-w,--ignore-all-space}'[ignore white space when comparing lines]'
  $abbrev_arg
  $nul_arg
  '--exit-code[report exit code 1 if differences, 0 otherwise]'
  '(--exit-code)--quiet[disable all output]'
)

pretty_arg='--pretty=-[pretty print commit messages]::pretty print:((raw\:"the raw commits"
                                                                     medium\:"most parts of the messages"
                                                                     short\:"few headers and only subject of messages"
                                                                     full\:"all parts of the commit messages"
                                                                     oneline\:"commit-ids and subject of messages"))'

exec_arg='--exec=-[specify path to git-upload-pack on remote side]:remote path'

fetch_args=(
  '-c[fetch commit objects]'
  '-t[fetch trees associated with commit objects]'
  '-a[fetch all objects]'
  '-v[show what is downloaded]'
  '-w[write commit-id into the filename under "$GIT_DIR/refs/<filename>"]:filename'
  '--recover[recover from a failed fetch]'
)

# TODO: Add descriptions to strategies (stupid is undocumented).
merge_args=(
  '(-n --no-summary)'{-n,--no-summary}'[do not show diffstat at the end of the merge]'
  '--no-commit[perform the merge but do not autocommit]'
  '--squash[merge, but do not make a commit]'
  '*'{-s,--strategy=-}'[use given merge strategy]:merge strategy:__git_merge_strategies'
)

force_ref_arg=('(-f --force)'{-f,--force}'[allow refs that are not ancestors to be updated]')

tags_fetch_arg=(
  '(--no-tags -t --tags)--no-tags[disable automatic tag following]'
  '(--no-tags -t --tags)'{-t,--tags}'[fetch remote tags]'
)

author_conversion_file_arg_spec='[specify author-conversion file]:author-conversion file:_files'

author_conversion_file_arg='-A'$author_conversion_file_arg_spec

long_author_conversion_file_arg='--authors-file=-'$author_conversion_file_arg_spec

verbose_arg='-v[produce verbose output]'

help_arg='-h[display usage information]'

upload_pack_arg=('(-u --upload-pack)'{-u,--upload-pack=-}'[specify path to git-upload-pack on remote side]:remote path')

common_fetch_args=(
  '(-a --append)'{-a,--append}'[append ref names and object names of fetched refs to "$GIT_DIR/FETCH_HEAD"]'
  $upload_pack_arg
  $force_ref_arg
  $tags_fetch_arg
  '(-k --keep)'{-k,--keep}'[keep downloaded pack]'
  '(-u --update-head-ok)'{-u,--update-head-ok}'[allow updates of current branch head]'
  '--depth=-[deepen the history of a shallow repository by the given number of commits]: :_guard "[[\:guard\:]]" "depth"'
)

common_apply_args=(
  '--whitespace=-[detect a new or modified line that ends with trailing whitespaces]: :__git_apply_whitespace_strategies'
  '-p-[remove N leading slashes from traditional diff paths]: :_guard  "[[\:digit\:]]#" number'
  '-C-[ensure at least N lines of context match before and after each change]: :_guard  "[[\:digit\:]]#" number')

template_arg='--template=-[directory to use as a template for the object database]:directory:_directories'

shared_arg='--shared=-[share repository amongst several users]::permissions:__git_repository_permissions'

thin_arg='--thin[minimize number of objects to be sent]'

__git_zstyle_default () {
  zstyle -t $1 $2
  if (( $status == 2 )); then
    zstyle $*
  fi
}

# TODO: Either skip uninteresting commands or skip the description - the list
# is just too long.
# NOTE: I'm coming to the opinion that skipping the description is the right
# thing to do…, but not 100% sure yet.
(( $+functions[_git_commands] )) ||
_git_commands () {
  local -a base_commands
  base_commands=(
    'add:add paths to the index'
    'apply:apply patch on a git index file and a work tree'
    'bisect:find the change that introduced a bug'
    'branch:create and show branches'
    'checkout:checkout and switch to a branch'
    'cherry-pick:cherry-pick the effect of an existing commit'
    'clone:clone a repository into a new directory'
    'commit:record changes to the repository'
    'diff:show changes between commits, commit and working tree, etc.'
    'fetch:download objects and a head from another repository'
    'gc:cleanup unnecessary files and optimize thee local repository'
    'grep:print lines matching a pattern'
    'init:create empty git object database'
    'log:show commit logs'
    'merge:grand unified merge driver'
    'mv:move or rename file, directory, or symlink'
    'prune:prune all unreachable objects from the object database'
    'pull:fetch from and merge with a remote repository'
    'push:update remote refs along with associated objects'
    'rebase:rebase local commits to new upstream head'
    'reset:reset current HEAD to the specified state'
    'revert:revert existing commit'
    'rm:remove files from the working tree and from the index'
    'show-branch:show branches and their commits'
    "status:show working-tree's status"
    'tag:create tag object signed with GPG'
    'verify-tag:check GPG signature of a tag')

  local -a additional_commands
  additional_commands=(
    'am:apply patches from a mailbox (cooler than applymbox)'
    'annotate:annotate file lines with commit info'
    'applymbox:apply patches from a mailbox'
    'applypatch:apply one patch extracted from an e-mail'
    'archive:create an archive of files from a named tree'
    'blame:blame file lines on commits'
    'cat-file:provide content or type information for repository objects'
    'check-attr:display gitattributes information'
    'check-ref-format:makes sure that a reference-name is well formed'
    'checkout-index:copy files from the index to the working directory'
    'cherry:find commits not merged upstream'
    'clean:remove untracked files from the working tree'
    'clone-pack:clone a repository into the current repository (transport)'
    'commit-tree:create a new commit object'
    'count-objects:count unpacked objects and display their disk consumption'
    'describe:show the most recent tag that is reachable from a commit'
    'diff-files:compare files in the working tree and the index'
    'diff-index:compare content and mode of blobs between index and repository'
    'diff-stages:compare two "merge states" in the index file'
    'diff-tree:compare the content and mode of blobs found via two tree objects'
    'fetch-pack:receive missing objects from another repository'
    'imap-send:dump mailbox from stdin into imap folder'
    'index-pack:build pack index file for an existing packed archive'
    'local-fetch:duplicate another git repository on a local system'
    'ls-remote:show references in a remote or local repository'
    'ls-tree:display tree object in human-readable form'
    'mailinfo:extract patch from a single e-mail message'
    'mailsplit:split mbox file into a list of files'
    'merge-base:find as good a common ancestor as possible for a merge'
    'merge-file:run a three-way file merge'
    'merge-index:run merge for files needing merging'
    'merge-tree:show three-way merge without touching index'
    'mktag:create tag object'
    'mktree:build tree-object from ls-tree formatted text'
    'name-rev:find symbolic names for given revisions'
    'octopus:merge more than two commits'
    'pack-objects:create packed archive of objects'
    'pack-redundant:find redundant pack files'
    'pack-refs:pack heads and tags for efficient repository access'
    'parse-remote:routines to help parsing $GIT_DIR/remotes/'
    'peek-remote:list references on a remote repository using the upload-pack protocol'
    'prune-packed:remove extra objects that are already in pack files'
    'read-tree:read tree information into the directory index'
    'reflog:manage reflog information'
    'relink:hardlink common objects in local repositories'
    'repack:pack unpacked objects in a repository'
    'request-pull:generate summary of pending changes'
    'rerere:reuse recorded resolve'
    'rev-list:list commit object in reverse chronological order'
    'shortlog:summarize git log output'
    'show:show various types of objects'
    'show-index:display contents of a pack idx file'
    'show-ref:list references in a local repository'
    'symbolic-ref:read and modify symbolic references'
    'tar-tree:create tar archive of the files in the named tree'
    "unpack-file:create temporary file with blob's contents"
    'unpack-objects:unpack objects out of packed archive'
    'update-ref:update object name stored in a reference safely'
    'update-server-info:update auxiliary information on a dumb server'
    'var:display git logical variable'
    'verify-pack:validate packed git archive files'
    'whatchanged:show commit-logs and differences they introduce'
    'write-tree:create tree from the current index')

  local -a useful_commands
  useful_commands=(
    'format-patch:prepare patches for e-mail submission'
    'ls-files:information about files in the index/working directory'
    'config:get and set options in "$GIT_DIR/config"'
    'instaweb:instantly browse your working repository in gitweb'
    'remote:manage set of tracked repositories'
    'send-email:send patch-e-mails out of "format-patch" output'
    'update-index:modify index in some given way')

  local -a interoperability_commands
  interoperability_commands=(
    'archimport:import an Arch repository into git'
    'cvsexportcommit:export a commit to a CVS checkout'
    'cvsimport:import a CVS "repository" into a git repository'
    'svnimport:import SVN repository into git'
    'quiltimport:apply a quilt patchset'
    'svn:bidirectional operation between a single Subversion branch and git')

  local -a ancillary_commands
  ancillary_commands=(
    'config:get and set repository or global options'
    'convert-objects:convert old-style git repository'
    'for-each-ref:output information on each ref'
    'get-tar-commit-id:extract commit ID from an archive created using tar-tree'
    'hash-object:compute object ID from a file'
    'patch-id:compute unique ID for a patch'
    'fsck:verify the connectivity and validity of the objects in the database'
    'lost-found:recover lost references that luckily have not yet been pruned'
    'mergetool:run merge conflict resolution tools to resolve merge conflicts')

  local -a internal_commands
  internal_commands=(
    'daemon:start a really simple server for git repositories'
    'fast-import:import information into git directly'
    'fmt-merge-msg:produce merge commit message'
    'http-fetch:download remote git repository via HTTP'
    'http-push:push missing objects using HTTP/DAV'
    'merge-one-file:standard helper-program to use with merge-index'
    'receive-pack:command invoked by send-pack to receive what is pushed to it'
    'rev-parse:pick out and massage parameters for other git commands'
    'runstatus:a helper for git-status and git-commit'
    'send-pack:push to remote repository, intelligently'
    'shell:restricted login shell for GIT-only SSH access'
    'ssh-fetch:pull from remote repository over an SSH connection'
    'ssh-upload:"server-side" helper program used by ssh-fetch'
    'stripspace:filter out empty lines'
    'upload-archive:send archive back to git-archive'
    'upload-pack:command invoked by clone-pack and fetch-pack')

  local wanted_commands
  zstyle -s ':completion:${curcontext}:' commands wanted_commands || wanted_commands="all -internal"

  local -aU unique_wanted_commands
  unique_wanted_commands=($=wanted_commands)

  integer index_of_all=$(( $unique_wanted_commands[(I)all] ))
  if (( index_of_all > 0 )); then
    unique_wanted_commands[index_of_all]=()
    unique_wanted_commands+=(base additional useful interoperability ancillary internal)
  fi

  for (( i = 0; i < $#unique_wanted_commands; i++ )); do
    if [[ $unique_wanted_commands[i] == (#bq)-(*) ]]; then
      unique_wanted_commands[i]=()
      unique_wanted_commands[(I)$match[1]]=()
    fi
  done

  local -a commands
  for wanted_command in $unique_wanted_commands; do
    case $wanted_command in
      (base)
        commands+=($base_commands) ;;
      (additional)
        commands+=($additional_commands) ;;
      (useful)
        commands+=($useful_commands) ;;
      (interoperability)
        commands+=($interoperability_commands) ;;
      (ancillary)
        commands+=($ancillary_commands) ;;
      (internal)
        commands+=($internal_commands) ;;
    esac
  done

  _describe -t commands 'git command' commands && ret=0
}

(( $+functions[__git_aliases] )) ||
__git_aliases () {
  declare -a aliases

  # TODO: See __git_config_gettable_name for discussion on how to actually get
  # out the names, skipping the values.
  # TODO: Should check if the terminal is unicode capable.  If so, use ‘ and ’
  # instead of '.
  aliases=(${^${${(M)${(f)"$(_call_program aliases git config --list)"}:#alias.*}#alias.}/(#b)=(*)/:alias for \'$match[1]}\')
  __git_command_successful || return 0

  local expl

  _describe -t aliases 'git alias' aliases
}

(( $+functions[__git_aliases_and_commands] )) ||
__git_aliases_and_commands () {
  _alternative \
    'aliases: :__git_aliases' \
    'commands: :_git_commands'
}
# NOTE: -c is undocumented.
# TODO: Perhaps provide some sort of completion or guard for line range (-L).
# NOTE: --score-debug is undocumented.
# NOTE: --show-name is undocumented.
# NOTE: --show-number is undocumented.
(( $+functions[_git-annotate] )) ||
_git-annotate () {
  _arguments -S \
    '-b[show blank SHA-1 for boundary commits]' \
    '--root[do not treat root commits as boundaries]' \
    '--show-stats[include additional statistics at the end of blame output]' \
    '-c[undocumented]' \
    '-l[show long rev]' \
    '-t[show raw timestamp]' \
    '-S[use revs from revs-file]:revs-file:_files' \
    '-M-[detect moving lines in the file as well]:: :_guard "[[\:digit\:]]" "number of characters"' \
    '*-C-[detect copied lines from other files from same commit as well]:: :_guard "[[\:digit\:]]" "number of characters"' \
    '-L[annotate only the given line range]:line range' \
    '--contents[annotate against the given file if no rev is specified]:file:_files' \
    '--incremental[show results incrementally for machine processing]' \
    '--score-debug[uncodumented]' \
    '(-f --show-name)'{-f,--show-name}'[undocumented]' \
    '(-n --show-number)'{-n,--show-number}'[undocumented]' \
    '(-p --porcelain)'{-p,--porcelain}'[show results designed for machine processing]' \
    '(-h --help)'{-h,--help}'[show help message]' \
    ':file:__git_cached_files' \
    '::revision:__git_revisions' && ret=0
}

(( $+functions[_git-apply] )) ||
_git-apply () {
  _arguments \
    $nul_arg \
    '--allow-binary-replacement[allow binary files to be patched]' \
    '--apply[apply patches that would otherwise not be applied]' \
    '--cached[apply patches without touching the working tree]' \
    '--check[check if patches are applicable (turns off "apply")]' \
    '--exclude=-[skip files matching specified pattern]:pattern' \
    '--inaccurate-eof[work around missing-new-line-at-EOF bugs]' \
    '--index[make sure that the patch is applicable to the index]' \
    '--index-info[output information about original version of a blob if available]' \
    '--no-add[ignore additions made by the patch]' \
    '--numstat[same as --stat but in decimal notation and complete pathnames (turns off "apply")]' \
    '(-R --reverse)'{-R,--reverse}'[apply patches in reverse]' \
    '--reject[apply as much as possible, and leave rejected hunks in .rej files]' \
    '--stat[output diffstat for the input (turns off "apply")]' \
    '--summary[output summary of git-diff extended headers (turns off "apply")]' \
    '--unidiff-zero[disable unified-diff-context check]' \
    '(-v --verbose)'{-v,--verbose}'[report progress to stderr]' \
    $common_apply_args \
    '*::patch:_files' && ret=0
}

# NOTE: Documentation mentions options that don’t exist anymore, for example,
# --since, and shows -C twice!aa
(( $+functions[_git-blame] )) ||
_git-blame () {
  _git-annotate
}

(( $+functions[_git-checkout-index] )) ||
_git-checkout-index () {
  _arguments -S \
    $nul_arg \
    '(-a --all :)'{-a,--all}'[check out all files in the index]' \
    '(-f --force)'{-f,--force}'[force overwrite of existing files]' \
    '(-n --no-create)'{-n,--no-create}'[do not checkout new files]' \
    '--stage=-[check out files from named stage]:stage:(1 2 3 all)' \
    '--stdin[read list of paths from the standard input]' \
    '--temp[write the content to temporary files]' \
    '--prefix=-[prefix to use when creating files]:directory:_directories' \
    '(-q --quiet)'{-q,--quiet}'[do not complain about existing files or missing files]' \
    '(-u --index)'{-u,--index}'[update stat information in index]' \
    '*::file:__git_cached_files' && ret=0
}

(( $+functions[_git-clean] )) ||
_git-clean () {
  _arguments \
    '-d[remove untracked directories]' \
    '-n[just show what would be done]' \
    '-q[be quiet, only report errors]' \
    '(-X -x)-x[do use ignore rules]' \
    '(-X -x)-X[remove only files ignored by git]' && ret=0
}

(( $+functions[_git-commit-tree] )) ||
_git-commit-tree () {
  if (( CURRENT == 2 )); then
    __git_trees && ret=0
  elif [[ $words[CURRENT-1] == -p ]]; then
    local expl
    _description commits expl 'parent commit'
    __git_objects $expl && ret=0
  else
    compadd - '-p'
  fi
}

(( $+functions[_git-hash-object] )) ||
_git-hash-object () {
  _arguments -S \
    '(:)--stdin[read object from standard input]' \
    '-t[the type of object to create]:object type:((blob\:"a blob of data"
                                                    commit\:"a tree with parent commits"
                                                    tag\:"a symbolic name for another object"
                                                    tree\:"a recursive tree of blobs"))' \
    '-w[write the object to the object database]' \
    '(--stdin):file:_files' && ret=0
}

(( $+functions[_git-index-pack] )) ||
_git-index-pack () {
  local -a stdin_arguments

  if (( words[(I)--stdin] )); then
    stdin_arguments=(
      '--fix-thin[record deltified objects, based on objects not included]'
      '--keep=-[create .keep file]::reason:')
  fi

  _arguments \
    '-v[report progress to stderr]' \
    '-o[write generated pack index into specified file]:file:_files' \
    '--stdin[read pack from stdin and instead write to specified file]' \
    $stdin_arguments \
    ':pack file:_files -g "*.pack"' && ret=0
}

(( $+functions[_git-init] )) ||
_git-init () {
  _arguments \
    $shared_arg \
    $template_arg && ret=0
}

(( $+functions[_git-merge-file] )) ||
_git-merge-file () {
  integer n_labels=${#${(M)words[1,CURRENT-1]:#-L}}
  local label_argument

  if (( n_labels < 3 )) || [[ $words[CURRENT-1] == -L ]]; then
    local -a ordinals

    ordinals=(first second third)

    label_argument="*-L[label to use for the $ordinals[n_labels+1] file]:label"
  fi

  _arguments \
    $label_argument \
    '(-p --stdout)'{-p,--stdout}'[send merged file to standard output instead of overwriting first file]' \
    '(-q --quiet)'{-q,--quiet}'[do not warn about conflicts]' \
    ':current file:_files' \
    ':base file:_files' \
    ':other file:_files' && ret=0
}

(( $+functions[_git-merge-index] )) ||
_git-merge-index () {
  if (( CURRENT > 2 )) && [[ $words[CURRENT-1] != -[oq] ]]; then
    _arguments -S \
      '(:)-a[run merge against all files in the index that need merging]' \
      '*:index file:__git_cached_files' && ret=0
  else
    declare -a arguments

    (( CURRENT == 2 )) && arguments+='-o[skip failed merges]'
    (( CURRENT == 2 || CURRENT == 3 )) && arguments+='(-o)-q[do not complain about failed merges]'
    (( 2 <= CURRENT && CURRENT <= 4 )) && arguments+='*:merge program:_files -g "*(*)"'

    _arguments -S $arguments && ret=0
  fi
}

# TODO: Shouldn’t we add a __git_branches type completion?
(( $+functions[_git-merge-tree] )) ||
_git-merge-tree () {
  _arguments \
    ':base-tree:__git_tree_ishs' \
    ':branch 1:__git_tree_ishs' \
    ':branch 2:__git_tree_ishs' && ret=0
}

(( $+functions[_git-mktag] )) ||
_git-mktag () {
  _message 'no arguments allowed; only accepts tags on standard input'
}

(( $+functions[_git-mktree] )) ||
_git-mktree () {
  _arguments \
    '-z[read NUL-terminated ls-tree -z output]' && ret=0
}

(( $+functions[_git-pack-objects] )) ||
_git-pack-objects () {
  _arguments \
    '(--revs)--all[include all refs as well as revisions already specified]' \
    '--all-progress[force progress output, even during write-out phase]' \
    '--delta-base-offset[use delta-base-offset packing]' \
    '--depth=-[maximum delta depth]: :_guard "[[\:digit\:]]#" number' \
    '--incremental[ignore objects that have already been packed]' \
    '--no-reuse-delta[do not reuse existing deltas, but compute them from scratch]' \
    '--non-empty[only create a package if it contains at least one object]' \
    '--local[similar to --incremental, but only ignore unpacked non-local objects]' \
    '--progress[force progress output]' \
    '--revs[read revision arguments from standard input]' \
    '(:)--stdout[write the pack to standard output]' \
    '-q[do not report progress]' \
    '(--revs)--unpacked[limit objects to pack to those not already packed]' \
    '--window=-[number of objects to use per delta compression]: :_guard "[[\:digit\:]]#" number' \
    '(--stdout):base-name:_files' && ret=0
}

(( $+functions[_git-prune-packed] )) ||
_git-prune-packed () {
  _arguments -S \
    '-n[only list the objects that would be removed]' \
    '-q[suppress progress output]' && ret=0
}

(( $+functions[_git-read-tree] )) ||
_git-read-tree () {
  local aggressive_arg

  if (( words[(I)-m] )); then
    aggressive_arg='--aggressive[try harder to resolve merge conflicts]'
  fi

  local -a ui_args

  if (( words[(I)(-m|--reset|--prefix)] )); then
    ui_args=(
      '(   -i)-u[update the work tree after successful merge]'
      '(-u   )-i[update only the index; ignore changes in work tree]')
  fi

  local exclude_per_directory_arg

  if (( words[(I)-u] )); then
    exclude_per_directory_arg='--exclude-per-directory=-[specify .gitignore file]:.gitignore file:_files'
  fi

  _arguments -A '-*' \
    '(   --reset --prefix)-m[perform a merge, not just a read]' \
    '(-m         --prefix)--reset[perform a merge, not just a read, ignoring unmerged entries]' \
    '(-m --reset          2 3)--prefix=-[read the contents of specified tree-ish under specified directory]:prefix:_directories -r ""' \
    $aggressive_arg \
    $ui_args \
    $exclude_per_directory_arg \
    '1:first tree-ish to be read/merged:__git_tree_ishs' \
    '2:second tree-ish to be read/merged:__git_tree_ishs' \
    '3:third tree-ish to be read/merged:__git_tree_ishs' && ret=0
}

# TODO: Complete value regex somehow?
(( $+functions[_git-config] )) ||
_git-config () {
  local name_arg

  if (( words[(I)--get-regexp] )); then
    name_arg=':name regex'
  elif (( words[(I)--get(-all|)] )); then
    name_arg=':name:__git_config_gettable_name'
  else
    name_arg=':name:__git_config_name'
  fi

  _arguments -A '--*' \
    '(         --global)--system[use system-wide config file]' \
    '(--system         )--global[use user-global config file]' \
    '(      --bool)--int[setting is an integer]' \
    '(--int       )--bool[setting is a boolean]' \
    $name_arg \
    ":value:__git_config_values $words[CURRENT-1]" \
    '::value regex' \
    - '(actions)' \
    '(: -)--rename-section[rename the given section]:section:__git_config_section_names:new name'  \
    '(: -)--remove-section[remove the given section]:section:__git_config_section_names' \
    '(3 -)--add[add new value without altering any existing ones]' \
    '(2 -)--unset[remove the first matching value of the key]' \
    '(2 -)--unset-all[remove all matching values of the key]' \
    '(2 -)--get[get the first matching value of the key]' \
    '(2 -)--get-all[get all matching values of the key]' \
    '(2 -)--get-regexp[like "--get-all", but interpret "name" as a regular expression]' \
    '(-)--replace-all[replace all values of the given key]' \
    '(: --int --bool)'{-l,--list}'[list all variables set in config file]' && ret=0
}

# NOTE: --track is undocumented.
# TODO: --track, -t, --master, and -m should take remote branches, I guess.
# NOTE: --master is undocumented.
# NOTE: --fetch is undocumented.
(( $+functions[_git-remote] )) ||
_git-remote () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C \
    ':command:->command' \
    '*::options:->options' && ret=0

  case $state in
    (command)
      declare -a commands

      commands=(
        'add:add a new remote'
        'show:show information about a given remote'
        'prune:delete all stale tracking branches for a given remote'
        'update:fetch updates for a set of remotes')

      _describe -t commands 'sub-command' commands && ret=0
      ;;
    (options)
      case $line[1] in
        (add)
          _arguments \
            '*'{--track,-t}'[track given branch instead of default glob refspec]:branch:__git_branch_names' \
            '(--master -m)'{--master,-m}"[set the remote's HEAD to point to given master branch]:branch:__git_branch_names" \
            '(--fetch -f)'{--fetch,-f}'[run git-fetch on the new remote after it has been created]' \
            ':branch name:__git_remotes' \
            ':url:_urls' && ret=0
          ;;
        (show|name|prune)
          __git_remotes && ret=0
          ;;
        (update)
          __git_remote-groups && ret=0
          ;;
      esac
      ;;
  esac
}

(( $+functions[_git-unpack-objects] )) ||
_git-unpack-objects () {
  _arguments \
    '-n[only list the objects that would be unpacked]' \
    '-q[run quietly]' \
    '-r[try recovering objects from corrupt packs]' && ret=0
}

(( $+functions[_git-update-index] )) ||
_git-update-index () {
  local nul_arg

  if (( words[(I)--stdin] )); then
    nul_arg='-z[paths are separated with NUL instead of LF for --stdin]'
  fi

  _arguments -S \
    $refreshables \
    '--add[add files not already in the index]' \
    '(         --force-remove)--remove[remove files that are in the index but are missing from the work tree]' \
    '(--remove               )--force-remove[remove files from both work tree and the index]' \
    '(-q --unmerged --ignore-missing)--refresh[refresh the index]' \
    '-q[run quietly]' \
    '--unmerged[if unmerged changes exists, ignore them instead of exiting]' \
    '--ignore-missing[ignore missing files when refreshing the index]' \
    '*--cacheinfo[insert information directly into the cache]: :_guard "[0-7]#" "octal file mode": :_guard "[[\:xdigit\:]]#" "object id":file:_files' \
    '(: -)--index-info[read index information from stdin.]' \
    '--chmod=-[set the execute permissions on the updated files]:permission:((-x\:executable +x\:"not executable"))' \
    '(                   --no-assume-unchanged)--assume-unchanged[set the "assume unchanged" bit for the given paths]' \
    '(--assume-unchanged                      )--no-assume-unchanged[unset the "assume unchanged" bit for the given paths]' \
    '(-)'{-g,--again}'[run git-update-index on differing index entries]' \
    '(-)--unresolve[restore "unmerged" or "needs updating" state of files]' \
    '--info-only[only insert files object-IDs into index]' \
    '--replace[replace files already in the index if necessary]' \
    '(: -)--stdin[read list of paths from standard input]' \
    '--verbose[report what is being added and removed from the index]' \
    $nul_arg \
    '*::file:_files' && ret=0
}

(( $+functions[_git-write-tree] )) ||
_git-write-tree () {
  _arguments \
    '--missing-ok[ignore objects in the index that are missing in the object database]'
    '--prefix=-[write tree representing given sub-directory]:sub-directory:_directories -r ""' && ret=0
}

(( $+functions[_git-cat-file] )) ||
_git-cat-file () {
  _arguments \
    '(   -s -e -p 1)-t[show the type of the given object]' \
    '(-t    -e -p 1)-s[show the size of the given object]' \
    '(-t -s    -p 1)-e[exit with zero status if object exists]' \
    '(-t -s -e    1)-p[pretty-print the given object]' \
    '(-t -s -e -p  ):object type:(blob commit tag tree)' \
    '(-t -s -e -p  ):object:__git_objects' && ret=0
}

(( $+functions[_git-describe] )) ||
_git-describe () {
  _arguments \
    $abbrev_arg \
    '--all[use any ref found in "$GIT_DIR/refs/"]' \
    '--tags[use any tag found in "$GIT_DIR/refs/tags/"]' \
    $abbrev_arg \
    '--candidates=-[consider up to given number of canditates]: :_guard "[[\:digit\:]]##" "number of canditates"' \
    '--debug[display information about the searching strategy]' \
    '*:committish:__git_committishs' && ret=0
}

# TODO: Use __git_modified_files instead?
(( $+functions[_git-diff-index] )) ||
_git-diff-index () {
  _arguments -S \
    $diff_args \
    '--cached[do not consider the work tree at all]' \
    '-m[flag non-checked-out files as up-to-date]' \
    ':tree-ish:__git_tree_ishs' \
    '*::index file:__git_cached_files' && ret=0
}

# TODO: Use __git_modified_files instead?
(( $+functions[_git-diff-files] )) ||
_git-diff-files () {
  _arguments \
    $diff_args \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index)-0[omit diff output for unmerged entries]' \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index)'{-1,--base}'[diff against "base" version]' \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index)'{-2,--ours}'[diff against "our branch" version]' \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index)'{-3,--theirs}'[diff against "their branch" version]' \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index)'{-c,--cc}'[compare "our branch", "their branch" and working tree files]' \
    '(-0 -1 -2 -3 --base --ours --theirs -c --cc --no-index --exit-code *)--no-index[compare given files / directories]' \
    '-q[remain silent even on nonexisting files]' \
    '1:file:_files' \
    '2:file:_files' \
    '*::file:_files' && ret=0
}

# TODO: Use __git_modified_files instead?
(( $+functions[_git-diff-stages] )) ||
_git-diff-stages () {
  _arguments \
    $diff_args \
    ':stage 1:__git_stages' \
    ':stage 2:__git_stages' \
    '*::index file:_files' && ret=0
}

# TODO: Use __git_modified_files instead?
(( $+functions[_git-diff-tree] )) ||
_git-diff-tree () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C -S \
    $diff_args \
    $pretty_arg \
    '--encoding=-[re-code commit log-message in given encoding]::log-message encoding:__git_encodings' \
    '--no-commit-id[skip output of commit IDs]' \
    '--root[show diff against the empty tree]' \
    '--stdin[read commit and tree information from standard input]' \
    '-m[show merge commits]' \
    '-r[recurse into subdirectories]' \
    '(-r)-t[show tree entry itself as well as subtrees (implies -r)]' \
    '-s[do not show differences]' \
    '-v[show commit message before the differences]' \
    '(-c --cc)-c[show differences from each of the parents to the merge result]' \
    '(-c --cc)--cc[how differences from each of the parents and omit differences from only one parent]' \
    '--always[always show commit itself and the commit log message]' \
    ':tree-ish:__git_tree_ishs' \
    '*::file:->files' && ret=0

  case $state in
    files)
      if (( $#line > 2 )); then
        # TODO: this is probably just stupid to do.
        # What'd be nice would be
        # common files:
        #   ...
        # original tree:
        #   ...
        # new tree:
        #   ...
        _alternative \
          "original tree:original tree:__git_tree_files $line[1]" \
          "new tree:new tree:__git_tree_files $line[2]" && ret=0
      else
        _alternative \
          ': :__git_tree_ishs' \
          ": :__git_tree_files $line[1]" && ret=0
      fi
      ;;
  esac
}

# TODO: Better completion for --format: should complete %(field) stuff, that
# is, %(refname), %(objecttype), %(objectsize), %(objectname) with optional ‘*’
# in front.
# TODO: Documentation says that --count can be given * number of times, but
# sources beg to differ, allowing only one.
(( $+functions[_git-for-each-ref] )) ||
_git-for-each-ref () {
  _arguments -S \
    '--format=-[output format of ref information]:format' \
    '(-s --shell -p --perl --python --tcl)'{-s,--shell}'[use string literals suitable for sh]' \
    '(-s --shell -p --perl --python --tcl)'{-p,--perl}'[use string literals suitable for Perl]' \
    '(-s --shell -p --perl          --tcl)'--python'[use string literals suitable for Python]' \
    '(-s --shell -p --perl --python      )'--tcl'[use string literals suitable for Tcl]' \
    '--count=-[maximum number of refs to iterate over]: :_guard "[[\:digit\:]]#" "maximum number of refs"' \
    '--sort=-[key to sort refs by]:sort key:__git_ref_sort_keys' \
    ':: :_guard "([^-]?#|)" pattern' && ret=0
}

(( $+functions[_git-fmt-merge-msg] )) ||
_git-fmt-merge-msg () {
  arguments \
    '(          --no-summary)--summary[add one-line descriptions from commits being merged]' \
    '(--summary             )--no-summary[do not add one-line descriptions from commits being merged]' \
    '(-F --file)'{-F,--file}'[specify list of merged objects from file]:file:_files' && ret=0
}

(( $+functions[_git-fsck] )) ||
_git-fsck () {
  _arguments \
    '--cache[consider objects recorded in the index as head nodes for reachability traces]' \
    '--full[check all object directories]' \
    '--root[show root nodes]' \
    '--strict[do strict checking]' \
    '--tags[show tags]' \
    '--unreachable[show objects that are unreferenced in the object database]' \
    '*::object:__git_objects' && ret=0
}

(( $+functions[_git-ls-files] )) ||
_git-ls-files () {
  local no_empty_directory_arg

  if (( words[(I)--directory] )); then
    no_empty_directory_arg='--no-empty-directory[do not list empty directories]'
  fi

  _arguments -S \
    $nul_arg \
    '(-c --cached)'{-c,--cached}'[show cached files in the output]' \
    '(-d --deleted)'{-d,--deleted}'[show deleted files in the output]' \
    '(-i --ignored)'{-i,--ignored}'[show ignored files in the output]' \
    '(-k --killed)'{-k,--killed}'[show killed files in the output]' \
    '(-m --modified)'{-m,--modified}'[show modified files in the output]' \
    '(-o --others)'{-o,--others}'[show other files in the output]' \
    '(-s --stage)'{-s,--stage}'[show stage files in the output]' \
    '(-u --unmerged)'{-u,--unmerged}'[show unmerged files in the output]' \
    '(   -v)-t[identify each files status (HMRCK?)]' \
    '(-t   )-v[identify each files status (hmrck?)]' \
    '*'{-x,--exclude=-}'[skip files matching given pattern]:file pattern' \
    '*'{-X,--exclude-from=-}'[skip files matching patterns in given file]:file:_files' \
    '*--exclude-per-directory=-[skip directories matching patterns in given file]:file:_files' \
    '--directory[if a whole directory is classified as "other", show just its name]' \
    $no_empty_directory_arg \
    '--error-unmatch[if any <file> does not appear in the index, treat this as an error]' \
    '--full-name[force paths to be output relative to the project top directory]' \
    $abbrev_arg \
    '*::index file:_files' && ret=0
}

(( $+functions[_git-ls-tree] )) ||
_git-ls-tree () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C \
    $nul_arg \
    $abbrev_arg \
    '(-t)-d[do not show children of given tree (implies -t)]' \
    {--name-only,--name-status}'[list only filenames, one per line]' \
    '-r[recurse into subdirectories]' \
    '-t[show tree entries even when going to recurse them]' \
    '--full-name[output full path-names]' \
    ':tree-ish:__git_tree_ishs' \
    '*::tree file:->files' && ret=0

  case $state in
    files)
      __git_tree_files $line[1] && ret=0
      ;;
  esac
}

(( $+functions[_git-imap-send] )) ||
_git-imap-send () {
  _message 'no arguments allowed; accepts mailbox file on standard input'
}

(( $+functions[_git-quiltimport] )) ||
_git-quiltimport () {
  _arguments \
    "--dry-run[check patches and warn if they can't be imported]" \
    '--author[default author name and email address to use for patches]' \
    '--patches[set directory containing patches]:patch directory:_directories' && ret=0
}

(( $+functions[_git-merge-base] )) ||
_git-merge-base () {
  _arguments \
    '(-a --all)'{-a,--all}'[show all common ancestors]' \
    ':commit 1:__git_commits' \
    ':commit 2:__git_commits' && ret=0
}

(( $+functions[_git-name-rev] )) ||
_git-name-rev () {
  _arguments -S \
    '--tags[only use tags to name the commits]' \
    '--refs=-[only use refs matching given pattern]: :_guard "?#" "shell pattern"' \
    '(--stdin :)--all[list all commits reachable from all refs]' \
    '(--all :)--stdin[read from stdin and append revision-name]' \
    '(--stdin --all)*:commit-ish:__git_revisions' && ret=0
}

(( $+functions[_git-pack-redundant] )) ||
_git-pack-redundant () {
  _arguments \
    '(:)--all[process all packs]' \
    '--alt-odb[do not require objects to be present in local packs]' \
    '--verbose[output some statistics to stderr]' \
    '(--all)*::packs:_files -g "*.pack"' && ret=0
}

# TODO: --timestamp undocumented.
# TODO: __git_commits2 should be reworked/reworded.
(( $+functions[_git-rev-list] )) ||
_git-rev-list () {
  if (( words[(I)--] && words[(I)--] != CURRENT )); then
    _arguments \
      '*:index file:__git_cached_files' && ret=0
  else
    __git_setup_revision_arguments

    _arguments -S \
      $revision_arguments \
      '(--pretty)--header[show commit headers]' \
      '--remote-empty[stop when a given path disappears from the tree]' \
      '--timestamp[undocumented]' \
      '(         --bisect-vars)--bisect[show only the middlemost commit object]' \
      '(--bisect              )--bisect-vars[same as --bisect, outputing shell-evalable code]' \
      '--stdin[read commit objects from standard input]' \
      '*:commit id:__git_commits2' && ret=0
  fi
}

(( $+functions[_git-show-ref] )) ||
_git-show-ref () {
  _arguments -S \
    - list \
      '(-h --head)'{-h,--head}'[show the HEAD reference]' \
      '--tags[show only "refs/tags"]' \
      '--heads[show only "refs/heads"]' \
      '(-d --dereference)'{-d,--dereference}'[dereference tags into object IDs as well]' \
      '(-s --hash)'{-s+,--hash=-}'[only show the SHA-1 hash, not the reference name]:: :_guard "[[\:digit\:]]#" length' \
      '--verify[enable stricter reference checking]' \
      $abbrev_arg \
      '(-q --quiet)'{-q,--quiet}'[do not print any results to stdout]' \
      '*: :_guard "([^-]?#|)" pattern' \
    - exclude \
      '--exclude-existing=-[filter out existing refs from stdin]:: :_guard "([^-]?#|)" pattern' && ret=0
}

(( $+functions[_git-show] )) ||
_git-show () {
  __git_setup_revision_arguments

  _arguments -S \
    $revision_arguments \
    '*:object:__git_revisions' && ret=0
}

(( $+functions[_git-show-index] )) ||
_git-show-index () {
  _message 'no arguments allowed; accepts index file on standard input'
}

(( $+functions[_git-tar-tree] )) ||
_git-tar-tree () {
  _arguments \
    '--remote=-[retrieve a tar archive from a remote repository]:__git_remote_repository' \
    ':tree-ish:__git_tree_ishs' \
    ':base:_files' && ret=0
}

(( $+functions[_git-unpack-file] )) ||
_git-unpack-file () {
  _arguments \
    ':blob id:__git_blobs' && ret=0
}

(( $+functions[_git-var] )) ||
_git-var () {
  _arguments \
    '(:)-l[show logical variables]' \
    '(-):variable:((GIT_AUTHOR_IDENT\:"name and email of the author" \
                    GIT_COMMITTER_IDENT\:"name and email of committer"))' && ret=0
}

(( $+functions[_git-verify-pack] )) ||
_git-verify-pack () {
  _arguments -S \
    '-v[show objects contained in pack]' \
    '*:index file:_files -g "*.idx"' && ret=0
}
 
(( $+functions[_git-clone-pack] )) ||
_git-clone-pack () {
  _arguments \
    $exec_arg \
    ':repository:__git_any_repositories' \
    '*:head:__git_heads' && ret=0
}

(( $+functions[_git-fetch-pack] )) ||
_git-fetch-pack () {
  _arguments \
    '--all[fetch all remote refs]' \
    '(-q --quiet)'{-q,--quiet}'[make output less verbose]' \
    '(-k --keep)'{-k,--keep}'[do not invoke git-unpack-objects on received data]' \
    $thin_arg \
    '(--upload-pack --exec)'{--upload-pack=-,--exec=-}'[specify path to git-upload-pack on remote side]:remote path' \
    '--depth=-[limit fetching to ancestor-chains not longer than given number]: :_guard "[[\:digit\:]]#" "maximum ancestor-chain length"' \
    '--no-progress[do not show progress]' \
    $verbose_arg \
    ':repository:__git_any_repositories' \
    '*:references:__git_references' && ret=0
}

(( $+functions[_git-fast-import] )) ||
_git-fast-import () {
  _arguments \
    '--date-format=-[specify the types of dates being passed]:((raw\:"native git format"
                                                                rfc2822\:"standard email format"
                                                                now\:"use current time and timezone"))' \
    '--max-pack-size=-[maximum size of each packfile]: :_guard "[[\:digit\:]]#" "maximum pack size"' \
    '--depth=-[maximum delta depth for blob and tree deltification]: :_guard "[[\:digit\:]]#" "maximum delta depth"' \
    '--active-branches=-[maximum number of branches to maintain active at once]: :_guard "[[\:digit\:]]#" "maximum number of branches"' \
    '--export-marks=-[dump the internal marks table to given file]:export file:_files' \
    '--export-pack-edges=-[list packfiles and last commit on branches in them in given file]:export file:_files' \
    '--force[force updating modified existing branches]' \
    '--quiet[disable all non-fatal output]' \
    '--stats[display statistics about object created]' && ret=0
}

(( $+functions[_git-http-fetch] )) ||
_git-http-fetch () {
  _arguments \
    $fetch_args \
    '(1)--stdin[read commit ids and refs from standard input]' \
    ':commit id:__git_commits' \
    ':URL:_urls' && ret=0
}

(( $+functions[_git-http-push] )) ||
_git-http-push () {
  _arguments \
    '--all[verify that all objects in local ref history exist remotely]' \
    '--complete[do not assume that the remote repository is complete]' \
    '--force[allow refs that are not ancestors to be updated]' \
    '--verbose[report the list of objects being walked locally and sent to the remote]' \
    '(   -D)-d[remove refs from remote repository]' \
    '(-d   )-D[forcefully remove refs from remote repository]' \
    ':URL:_urls' \
    '*:remote refs:__git_remote_references' && ret=0
}

(( $+functions[_git-local-fetch] )) ||
_git-local-fetch () {
  _arguments \
    $fetch_args \
    '-l[hard-link objects]' \
    '-n[do not copy objects]' \
    '-s[sym-link objects]' \
    '(1)--stdin[read commit ids and refs from standard input]' \
    ':commit id:__git_commits' \
    ':directory:_directories' && ret=0
}

# TODO: --tags undocumented.
# TODO: --heads undocumented.
# TODO: --refs undocumented.
(( $+functions[_git-peek-remote] )) ||
_git-peek-remote () {
  _arguments \
    '--upload-pack=-[specify path to git-upload-pack on remote side]:remote path' \
    $exec_arg \
    '--tags[undocumented]' \
    '--heads[undocumented]' \
    '--refs[undocumented]' \
    ':repository:__git_repository' && ret=0
}

(( $+functions[_git-sh-setup] )) ||
_git-sh-setup () {
  _message "you probably should not be issuing this command; it is an internal git helper"
}

# TODO: --dry-run undocumented.
# TODO: -n undocumented.
# TODO: --stale-fix undocumented.
# TODO: --verbose undocumented.
# TODO: -- undocumented.
(( $+functions[_git-reflog] )) ||
_git-reflog () {
  __git_setup_revision_arguments

  if (( CURRENT == 2 )); then
    local curcontext=$curcontext state line
    declare -A opt_args

    _arguments -C \
      $revision_arguments \
      ':subcommand:->subcommand' && ret=0

    case $state in
      (subcommand)
        declare -a reflog_cmds

        reflog_cmds=(
        'expire:prune old reflog entries'
        'show:show log of the current branch')

        _describe -t subcommands 'subcommands' reflog_cmds && ret=0
        ;;
    esac
  else
    case $words[2] in
      (expire)
        _arguments -S \
          '(-n --dry-run)'{-n,--dry-run}'[undocumented]' \
          '--expire=-[prune entries older than given time]:date' \
          '--expire-unreachable=-[prune entries older than given time and unreachable]:date' \
          '--stale-fix[undocumented]' \
          '--all[prune all refs]' \
          '--verbose' && ret=0
        ;;
      (show|--*)
        _arguments -S \
          $revision_arguments \
          ':subcommand:' && ret=0
        ;;
    esac
  fi
}

(( $+functions[_git-receive-pack] )) ||
_git-receive-pack () {
  _arguments \
    ':directory to sync into:_directories' && ret=0
}

(( $+functions[_git-shell] )) ||
_git-shell () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C \
    '-c[command to execute]:command:->commands' \
    ':argument to command:->arguments' && ret=0

  case $state in
    (commands)
      declare -a commands

      commands=(git-receive-pack git-upload-pack)

      _describe -t commands command commands && ret=0
      ;;
    (arguments)
      case $line[1] in
        (git-receive-pack)
          local expl

          _description directories expl 'directory to sync into'
          _directories $expl
          ;;
        (git-upload-pack)
          local expl

          _description directories expl 'directory to sync from'
          _directories $expl
          ;;
      esac
      ;;
  esac
}

(( $+functions[_git-upload-archive] )) ||
_git-upload-archive () {
  _arguments \
    ':directory to get tar archive from:_directories' && ret=0
}

(( $+functions[_git-send-pack] )) ||
_git-send-pack () {
  _arguments \
    '(--receive-pack --exec)'{--receive-pack=-,--exec=-}'[specify path to git-receive-pack on remote side]:remote path'
    '--all[update all refs that exist locally]' \
    '--force[update remote orphaned refs]' \
    $verbose_arg \
    $thin_arg \
    ':repository:__git_any_repositories' \
    '*:remote refs:__git_remote_references' && ret=0
}

(( $+functions[_git-ssh-fetch] )) ||
_git-ssh-fetch () {
  _arguments \
    $fetch_args \
    ':commit id:__git_commits' \
    ':URL:_urls' && ret=0
}

(( $+functions[_git-ssh-upload] )) ||
_git-ssh-upload () {
  _arguments \
    $fetch_args \
    ':commit id:__git_commits' \
    ':URL:_urls' && ret=0
}

(( $+functions[_git-update-server-info] )) ||
_git-update-server-info () {
  _arguments \
    '(-f --force)'{-f,--force}'[update the info files from scratch]' && ret=0
}

(( $+functions[_git-upload-pack] )) ||
_git-upload-pack () {
  _arguments \
    '--strict[do not try <directory>/.git/ if <directory> is not a git directory' \
    '--timeout=-[interrupt transfer after given number of seconds of inactivity]: :_guard "[[\:digit\:]]" "inactivity timeout"' \
    ':directory:_directories' && ret=0
}

(( $+functions[_git-add] )) ||
_git-add () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C -S \
    '-n[do not actually add files; only show which ones would be added]' \
    '-v[show files as they are added]' \
    '-f[allow adding otherwise ignored files]' \
    '(-i --interactive : -)'{-i,--interactive}'[add contents interactively to the index]' \
    '*:file:->files' && ret=0

  case $state in
    (files)
      declare -a ignored_files_alternatives
      if (( words[(I)-f] )); then
        ignored_files_alternatives=(
          'ignored-modified-files:ignored modified files:__git_modified_files --ignored'
          'ignored-other-files:ignored other files:__git_other_files --ignored')
      fi

      _alternative \
        'modified-files:modified files:__git_modified_files' \
        'other-files:other files:__git_other_files' \
        $ignored_files_alternatives && ret=0
      ;;
  esac
}
__git_zstyle_default ':completion::complete:git-add:argument-rest:*' ignore-line yes

(( $+functions[_git-am] )) ||
_git-am () {
  _arguments \
    '--3way[use 3-way merge if patch does not apply cleanly]' \
    '--binary[pass "--allow-binary-replacement" to "git-apply"]' \
    '--dotest=-[use given directory as working area instead of .dotest]:directory:_directories' \
    '--interactive[apply patches interactively]' \
    '--keep[pass "-k" flag to "git-mailinfo"]' \
    '--resolved[continue after resolving patch failure by hand]' \
    '--signoff[add "Signed-off-by:" line to the commit message]' \
    '--skip[skip the current patch]' \
    '--utf8[pass "-u" flag to "git-mailinfo"]' \
    '--no-utf8[do not pass "-u" flag to "git-mailinfo"]' \
    $common_apply_args \
    '*:mbox file:_files' && ret=0
}

(( $+functions[_git-archive] )) ||
_git-archive () {
  local curcontext=$curcontext state line
  declare -A opt_args

  declare -a backend_args

  if (( words[(I)--format=*] > 0 && words[(I)--format=*] < CURRENT )); then
    case ${words[$words[(I)--format=*]]#--format=} in
      (zip)
        backend_args=(
          '-0[do not deflate files]'
          '-1[minimum compression]'
          '-2[a little more compression]'
          '-3[slightly more compression]'
          '-4[a bit more compression]'
          '-5[even more compression]'
          '-6[slightly even more compression]'
          '-7[getting there]'
          '-8[close to maximum compression]'
          '-9[maximum compression]')
        ;;
    esac
  fi

  _arguments -C \
    '--format=-[format of the resulting archive]:archive format:__git_archive_formats' \
    '(- :)--list[list available archive formats]' \
    '--prefix=-[prepend the given path prefix to to each filename]:path prefix:_directories -r ""' \
    $backend_args \
    '--remote=-[archive remote repository]:remote repository:__git_any_repositories' \
    ':tree-ish:__git_tree_ishs' \
    '*:tree file:->files' && ret=0

  case $state in
    (files)
      __git_tree_files $line[1] && ret=0
      ;;
  esac
}

(( $+functions[_git-applymbox] )) ||
_git-applymbox () {
  _arguments -A '-*' \
    '-k[do not modify "Subject:" header]' \
    '-m[apply patches with "git-apply" and fail if patch is unclean]' \
    '-q[apply patches interactively]' \
    '-u[encode commit information in UTF-8]' \
    '(1)-c[restart command after fixing an unclean patch]:patch:_files -g ".dotest/0*"' \
    ':mbox file:_files' \
    '::signoff file:__git_signoff_file' && ret=0
}

(( $+functions[_git-bisect] )) ||
_git-bisect () {
  local bisect_cmds

  bisect_cmds=(
    bad:"mark current or given revision as bad"
    good:"mark current or given revision as good"
    log:"show the log of the current bisection"
    next:"find next bisection to test and check it out"
    replay:"replay a bisection log"
    reset:"finish bisection search and return to the given branch (or master)"
    start:"reset bisection state and start a new bisection"
    visualize:"show the remaining revisions in gitk"
  )

  if (( CURRENT == 2 )); then
    _describe -t command "git-bisect commands" bisect_cmds && ret=0
  else
    case $words[2] in
      (bad)
        _arguments \
          '2:revision:__git_commits' && ret=0
        ;;
      (good)
        _arguments \
          '*:revision:__git_commits' && ret=0
        ;;
      (replay)
        _arguments \
          '2:file:_files' && ret=0
        ;;
      (reset)
        _arguments \
          '2:branch:__git_heads' && ret=0
        ;;
      (*)
        _nothing
        ;;
    esac
  fi
}

# TODO: complete branch names?
(( $+functions[_git-branch] )) ||
_git-branch () {
  local my_abbrev_arg
  if (( words[(I)-v] > 0 && words[(I)-v] < CURRENT )); then
    my_abbrev_arg=$abbrev_arg
  fi

  declare -a dependent_deletion_args
  if (( words[(I)-d] || words[(I)-D] )); then
    dependent_deletion_args=(
      '-r[delete remote-tracking branches]'
      '*:branch-name:__git_branch_names')
  fi

  declare -a dependent_modification_args
  if (( words[(I)-m] || words[(I)-M] )); then
    dependent_modification_args=(
      ':old or new branch-name:__git_branch_names'
      '::new branch-name:__git_branch_names')
  fi

  # TODO: I’m not happy with having to force a pattern with -A.
  _arguments -S -A "-*" \
    - list \
      '(        --no-color)--color[turn on branch coloring]' \
      '(--color           )--no-color[turn off branch coloring]' \
      '(   -a)-r[list only the remote-tracking branches]' \
      '(-r   )-a[list both remote-tracking branches and local branches]' \
      '-v[show SHA1 and commit subject line for each head]' \
      $my_abbrev_arg \
    - create \
      "-l[create the branch's reflog]" \
      '-f[force the creation of a new branch]' \
      ':branch-name:__git_branch_names' \
      '::start-point:__git_revisions' \
    - modify \
      '(   -M)-m[rename a branch and the corresponding reflog]' \
      '(-m   )-M[rename a branch even if the new branch-name already exists]' \
      $dependent_modification_args \
    - delete \
      '(   -D)-d[delete a fully merged branch]' \
      '(-d   )-D[delete a branch]' \
      $dependent_deletion_args && ret=0
}
__git_zstyle_default ':completion::complete:git-branch:delete-argument-rest:*' ignore-line yes

# TODO: __git_tree_ishs is just stupid.  It should be giving us a list of tags
# and perhaps also allow all that just with ^{tree} and so on.  Not quite sure
# how to do that, though.
(( $+functions[_git-checkout] )) ||
_git-checkout () {
  local curcontext=$curcontext state line
  declare -A opt_args

  local new_branch_reflog_arg

  if (( words[(I)-b] > 0 )); then
    new_branch_reflog_arg="-l[create the new branch's reflog]"
  fi

  # TODO: This isn’t quite correct in regards of the handling of the “--”
  # option, as it should prevent us from seeing a branch, not stop matching
  # options.
  _arguments -C -S -A "-*" \
    - switch-branch \
      '-q[suppress feedback messages]' \
      '-f[force a complete re-read]' \
      '-b[create a new branch based at given branch]: :__git_guard_branch-name' \
      $new_branch_reflog_arg \
      '-m[3way merge current branch, working tree and new branch]' \
      '::branch:__git_revisions' \
    - update-files \
      '::tree-ish:__git_tree_ishs' \
      '::file:->files' && ret=0

  case $state in
    (files)
      if [[ -n $line[1] ]]; then
        __git_tree_files $line[1] && ret=0
      else
        __git_cached_files && ret=0
      fi
      ;;
  esac
}

(( $+functions[_git-cherry-pick] )) ||
_git-cherry-pick () {
  _arguments \
    '(-e --edit)'{-e,--edit}'[edit commit before committing the revert]' \
    '(-n --no-commit)'{-n,--no-commit}'[do not make the actually commit]' \
    '(-r --replay)'{-r,--replay}'[use original commit message intact]' \
    '-x[append information about what commit was cherry-picked]' \
    ':commit:__git_revisions' && ret=0
}

(( $+functions[_git-clean] )) ||
_git-clean () {
  _arguments -S \
    '-d[also remove untracked directories]' \
    '-n[do a dry run]' \
    '-q[run quietly]' \
    '(-X   )-x[also remove ignored files]' \
    '(   -x)-X[remove only ignored files]' \
    '*:file:_files' && ret=0
}

# TODO: The --no-checkout is undocumented.
(( $+functions[_git-clone] )) ||
_git-clone () {
  local -a shared

  if (( words[(I)(-l|--local)] )); then
    shared=('(-s --shared)'{-s,--shared}'[share the objects with the source repository]')
  fi

  _arguments \
    '--bare[make a bare GIT repository]' \
    '(-l --local)'{-l,--local}'[perform a local cloning of a repository]' \
    $shared \
    '--reference[reference repository]:repository:_directories' \
    '(-q --quiet)'{-q,--quiet}'[operate quietly]' \
    '-n[do not checkout HEAD after clone is complete]' \
    '(-o --origin)'{-o,--origin}'[use given name instead of "origin" as branch name]:name:__git_guard_branch-name' \
    $upload_pack_arg \
    $template_arg \
    '--depth[create a shallow clone, given number of revisions deep]: :_guard "[[\:digit\:]]##" depth' \
    ':repository:__git_any_repositories' \
    '*:directory:_directories' && ret=0
}

(( $+functions[_git-commit] )) ||
_git-commit () {
  _arguments -S \
    '(-a --all)'{-a,--all}'[update all paths in the index file]' \
    '--author[override the author name used in the commit]:author name' \
    '(-e --edit)'{-e,--edit}'[edit the commit message before committing]' \
    '(-o --only -i --include)'{-i,--include}'[update the given files and commit the whole index]' \
    '(-o --only -i --include)'{-o,--only}'[commit only the given files]' \
    '(-n --no-verify)'{-n,--no-verify}'[do not look for suspicious lines the commit introduces]' \
    '(-s --signoff)'{-s,--signoff}'[add Signed-off-by line at the end of the commit message]' \
    '(-q --quiet -v --verbose)'{-q,--quiet}'[suppress commit summary message]' \
    '(-q --quiet -v --verbose)'{-v,--verbose}'[show unified diff of all file changes]' \
    '(-u --untracked-files)'{-u,--untracked-files}'[show files in untracked directories]' \
    '*:file:__git_changed_files' \
    - '(message)' \
      '--amend[amend the tip of the current branch]' \
      {-c,--reedit-message=}'[use existing commit object and edit log message]:commit:__git_commits' \
      {-C,--reuse-message=}'[use existing commit object with same log message]:commit:__git_commits' \
      {-F,--file=}'[read commit message from given file]:file:_files' \
      {-m,--message=}'[use the given message as the commit message]:message' && ret=0
}
__git_zstyle_default ':completion::complete:git-commit:argument-rest:*' ignore-line yes


# TODO: __git_files should be __git_tree_files (do like in git-diff-tree and
# such)
(( $+functions[_git-diff] )) ||
_git-diff () {
  _arguments -S \
    $diff_args \
    '::original revision:__git_commits' \
    '::new revision:__git_commits' \
    '*::index file:__git_modified_files' && ret=0
}

(( $+functions[_git-fetch] )) ||
_git-fetch () {
  _arguments \
    $common_fetch_args \
    ':repository:__git_any_repositories' \
    '*:refspec:__git_ref_specs' && ret=0
}

(( $+functions[_git-format-patch] )) ||
_git-format-patch () {
  _arguments \
    $diff_args \
    '(-h --help)'{-h,--help}'[display usage information]' \
    '(-k --keep-subject -n --numbered)'{-k,--keep-subject}'[do not strip/add \[PATCH\] from the first line of the commit message]' \
    '(-k --keep-subject -n --numbered)'{-n,--numbered}'[name output in \[PATCH n/m\] format]' \
    '--start-number=[start numbering patches at given number]: :_guard "[[\:digit\:]]" "patch number"' \
    '(-o --output-directory --stdout)'{-o,--output-directory}'[store resulting files in given directory]:directory:_directories' \
    '(-o --output-directory)--stdout[output the generated mbox on standard output (implies --mbox)]' \
    '(-s --signoff)'{-s,--signoff}'[add "Signed-off-by:" line to the commit message]' \
    '--attach=-[create attachments instead of inlining patches]::git version string' \
    '--thread[make the second and subsequent mails refer to the first]' \
    '--in-reply-to=[make the first mail a reply to the given message]:message id' \
    '--ignore-if-in-upstream[do not include a patch that matches a commit in the given range]' \
    '--suffix[use the given suffix for filenames]:filename suffix' \
    ':commit range:__git_commit_ranges' && ret=0
}

(( $+functions[_git-gc] )) ||
_git-gc () {
  _arguments \
    '--prune[remove unreferenced loose objects]' && ret=0
}

(( $+functions[_git-grep] )) ||
_git-grep () {
  local -a pattern_operators

  if (( words[(I)-e] == CURRENT - 2 )); then
    pattern_operators=(
      '--and[both patterns must match]'
      '--or[either pattern must match]'
      '--not[the following pattern must not match]')
  fi

  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -A '--*' \
    '--cached[grep blobs registered in index file instead of working tree]' \
    '(-a --text)'{-a,--text}'[process binary files as if they were text]' \
    '(-i --ignore-case)'{-i,--ignore-case}'[ignore case when matching]' \
    '(-w --word-regexp)'{-w,--word-regexp}'[match only whole words]' \
    '(-v --invert-match)'{-v,--invert-match}'[select non-matching lines]' \
    '(   -H)-h[supress output of filenames]' \
    '(-h   )-H[show filenames]' \
    '--full-name[output paths relative to the project top directory]' \
    '(-E --extended-regexp -G --basic-regexp)'{-E,--extended-regexp}'[use POSIX extended regexes]' \
    '(-E --extended-regexp -G --basic-regexp)'{-G,--basic-regexp}'[use POSIX basic regexes]' \
    '-n[prefix the line number to matching lines]' \
    '(-l --files-with-matches -L --files-without-match)'{-l,--files-with-match}'[show only names of matching files]' \
    '(-l --files-with-matches -L --files-without-match)'{-L,--files-without-match}'[show only names of non-matching files]' \
    '(-c --count)'{-c,--count}'[show number of matching lines in files]' \
    '-A[show trailing context]: :_guard "[[\:digit\:]]#" lines' \
    '-B[show leading context]: :_guard "[[\:digit\:]]#" lines' \
    '-C[show context]: :_guard "[[\:digit\:]]#" lines' \
    '(1)*-f[read patterns from given file]:pattern file:_files' \
    '(1)*-e[use the given pattern for matching]:pattern' \
    $pattern_operators \
    '--all-match[all patterns must match]' \
    ':pattern:' \
    '*::tree-or-file:->files' && ret=0
  
  case $state in
    (files)
      integer first_tree last_tree start end

      (( start = words[(I)(-f|-e)] > 0 ? 1 : 2 ))
      (( end = $#line - 1 ))

      for (( i = start; i <= end; i++ )); do
        [[ line[i] == '--' ]] && break
        git cat-file -e "${(Q)line[i]}^{tree}" 2>/dev/null || break
        if (( first_tree == 0 )); then
          (( first_tree = last_tree = i ))
        else
          (( last_tree = i ))
        fi
      done

      if (( last_tree == 0 || last_tree == end )); then
        if (( first_tree == 0 )); then
          _alternative \
            'tree:tree:__git_trees' \
            "file:file:__git_cached_files" && ret=0
        else
          _alternative \
            'tree:tree:__git_trees' \
            "tree file:tree-files:__git_tree_files $line[first_tree,last_tree]" && ret=0
        fi
      else
        if (( first_tree == 0 )); then
          __git_cached_files
        else
          __git_tree_files $line[first_tree,last_tree]
        fi
      fi
      ;;
  esac
}

(( $+functions[_git-log] )) ||
_git-log () {
  local curcontext=$curcontext state line
  declare -A opt_args

  __git_setup_revision_arguments

  _arguments -S \
    $revision_arguments \
    '*:file-or-branch:->files' && ret=0

  case $state in
    (files)
      _alternative \
        'files:index file:__git_cached_files' \
        'branches:branch:__git_branch_names' && ret=0
      ;;
  esac
}

# TODO: repository needs fixing
(( $+functions[_git-ls-remote] )) ||
_git-ls-remote () {
  _arguments \
    '(-h --heads)'{-h,--heads}'[show only refs under refs/heads]' \
    '(-t --tags)'{-t,--tags}'[show only refs under refs/tags]' \
    $upload_pack_arg \
    ':repository:__git_any_repositories' \
    '*: :__git_references' && ret=0
}

(( $+functions[_git-merge] )) ||
_git-merge () {
  _arguments \
    "$merge_args[@]" \
    '-m:merge message' \
    '*:remote:__git_commits' && ret=0
}

(( $+functions[_git-mv] )) ||
_git-mv () {
  _arguments \
    '-f[force renaming/moving even if targets exist]' \
    '-k[skip move/renames that would lead to errors]' \
    '-n[only show what would happen]' \
    '*:source:__git_cached_files' \
    ':destination:_files' && ret=0
}

(( $+functions[_git-octupus] )) ||
_git-octupus () {
  _nothing
}

(( $+functions[_git-pull] )) ||
_git-pull () {
  _arguments \
    "$merge_args[@]" \
    $common_fetch_args \
    ':repository:__git_any_repositories' \
    '*:refspec:__git_ref_specs' && ret=0
}

# NOTE: For --receive-pack we use _files to complete, even though this will
# only complete files on the local end, not the remote end.  Still, it may be
# helpful to get some sort of completion going, perhaps modifying the path
# later on to match the remote end.
(( $+functions[_git-push] )) ||
_git-push () {
  _arguments \
    $force_ref_arg \
    '--all[fetch all refs]' \
    '--tags[all tags under "$GIT_DIR/refs/tags" are pushed]' \
    '(--receive-pack --exec)'{--receive-pack=-,--exec=-}'[path to git-receive-pack on remote]:remote path:_files' \
    '--repo=-[default repository to use]:repository:__git_any_repositories' \
    '(       --no-thin)--thin[try to minimize number of objects to be sent]' \
    '(--thin          )--no-thin[do not try to minimize number of objects to be sent]' \
    $verbose_arg \
    '::repository:__git_any_repositories' \
    '*::refspec:__git_ref_specs' && ret=0
}

(( $+functions[_git-rebase] )) ||
_git-rebase () {
  if [[ $words[2] == --(abort|continue|skip) ]]; then
    _message 'no more options'
  else
    _arguments \
      '--onto[start new branch with HEAD equal to "newbase"]:newbase' \
      '--continue[continue after failure]' \
      '--abort[abort current rebase]' \
      '--skip[skip the current patch]' \
      '--merge[use merging strategies to rebase]' \
      '*'{-s,--strategy=-}'[use given merge strategy]:merge strategy:__git_merge_strategies' \
      $verbose_arg \
      '-C-[ensure that given lines of surrounding context match]: :_guard "[[\:digit\:]]##" "lines of context"' \
      ':upstream branch:__git_revisions' \
      '::working branch:__git_revisions' && ret=0
  fi
}

(( $+functions[_git-repack] )) ||
_git-repack () {
  _arguments \
    '-a[pack all objects into a single pack]' \
    '-d[remove redundant packs after packing]' \
    '-f[pass "--no-reuse-delta" option to "git pack-objects"]' \
    '-l[pass "--local" option to "git pack-objects"]' \
    '-n[do not update server information]' \
    '-q[pass "-q" option to "git pack-objects"]' \
    '--window=-[number of objects to consider when doing delta compression]' \
    '--depth=-[maximum delta depth]' && ret=0
}

(( $+functions[_git-rerere] )) ||
_git-rerere () {
  declare -a commands

  commands=(
    'clear:reset the metadata used by rerere'
    'diff:output diffs for the current state of the resolution'
    'status:like diff, but only output filesames'
    'gc:prune old records of conflicted merges')

  _describe -t commands 'command' commands
}

(( $+functions[_git-reset] )) ||
_git-reset () {
  local commit_arg path_arg

  if [[ $words[2] == --mixed ]]; then
    commit_arg=':commit:__git_revisions'
    path_arg="*:file:__git_tree_files $words[3]"
  else
    commit_arg='::commit:__git_revisions'
  fi

  _arguments -S -A '--*' \
    '(        --soft --hard)--mixed[like --soft but report what has not been updated (default)]' \
    '(--mixed        --hard)--soft[do not touch the index file nor the working tree]' \
    '(--mixed --soft       )--hard[match the working tree and index to the given tree]' \
    $commit_arg \
    $path_arg && ret=0
}

(( $+functions[_git-revert] )) ||
_git-revert () {
  _arguments \
    '(-e --edit --no-edit)'{-e,--edit}'[edit the commit before committing the revert]' \
    '(-e --edit --no-edit)--no-edit[do not start the commit message editor]' \
    '(-n --no-commit)'{-n,--no-commit}'[do not commit the reversion]' \
    ':commit:__git_commits' && ret=0
}

# TODO: should take all arguments found in setup_revisions() (probably more or
# less what git-rev-list takes).
(( $+functions[_git-shortlog] )) ||
_git-shortlog () {
  __git_setup_revision_arguments

  _arguments -S \
    $revision_arguments \
    '(: -)'{-h,--help}'[print a short usage message and exit]' \
    '(-n --numbered)'{-n,--numbered}'[sort according to number of commits]' \
    '(-s --summary)'{-s,--summary}'[suppress commit description]' \
    '*::commitish:__git_committishs' && ret=0
}

# TODO: --date-order is undocumented.
# TODO: Better completion of --reflog.
(( $+functions[_git-show-branch] )) ||
_git-show-branch () {
  _arguments -S \
    '(--more        --independent --merge-base)--list[synonym to "--more=-1"]' \
    - branches \
      '(-a --all)'{-a,--all}'[show both remote-tracking branches and local branches]' \
      '(-r --remotes)'{-r,--remotes}'[show remote-tracking branches]' \
      '(       --list --independent --merge-base)--more=-[go given number of commit beyond common ancestor (no ancestry if negative)]:: :_guard "[[\:digit\:]]" limit' \
      '(--more --list               --merge-base)--independent[show only the reference that can not be reached from any of the other]' \
      '(--more --list --independent             )--merge-base[act like "git-merge-base -a" but with two heads]' \
      '--current[include current branch to the list of revs]' \
      '(          --sha1-name)--no-name[do not show naming strings for each commit]' \
      '(--no-name            )--sha1-name[name commits with unique prefix of object names]' \
      '--topo-order[show commits in topological order]' \
      '--topics[show only commits that are NOT on the first branch given]' \
      '--sparse[output merges that are reachable from multiple tips being shown]' \
      '--date-order[undocumented]' \
      '*:revision:__git_revisions' \
    - reflogs \
      '(-g --reflog)'{-g,--reflog=-}'[show reflog entries for given ref]::number of entries and base' \
      ':reference:__git_references' && ret=0
}

(( $+functions[_git-status] )) ||
_git-status () {
  _git-commit
}
__git_zstyle_default ':completion::complete:git-status:argument-rest:*' ignore-line yes

(( $+functions[_git-verify-tag] )) ||
_git-verify-tag () {
  _arguments \
    ':tag:__git_tags' && ret=0
}

# TODO: This should take those arguments that git-diff-tree can take, as well.
(( $+functions[_git-whatchanged] )) ||
_git-whatchanged () {
  __git_setup_revision_arguments

  _arguments -S \
    $revision_arguments \
    '1::commit id:__git_commits2' \
    '*:managed file:__git_cached_files' && ret=0
}

(( $+functions[_git-applypatch] )) ||
_git-applypatch () {
  _arguments \
    ':message file:_files' \
    ':patch file:_files' \
    ':info file:_files' \
    '::signoff file:__git_signoff_file' && ret=0
}

# TODO: Need to combine the list of attributes defined in __git_attributes.
(( $+functions[_git-check-attr] )) ||
_git-check-attr () {
  local -a attributes

  attributes=(crlf ident filter diff merge)

  local only_attributes=1
  for (( i = 2; i < $#words; i++ )); do
    if (( attributes[(I)$words[i]] == 0 )); then
      only_attributes=0
      break
    fi
  done

  if (( !only_attributes || words[(I)--] )); then
    __git_files && ret=0
  else
    _alternative \
      'files:file:__git_files' \
      'attributes:attribute:__git_attributes' && ret=0
  fi
}

# TODO: archive/branch can use _arch_archives perhaps?
(( $+functions[_git-archimport] )) ||
_git-archimport () {
  _arguments \
    '-a[auto-register archives at http://mirrors.sourcecontrol.net]' \
    '-D[attempt to import trees that have been merged from]: :_guard "[[\:digit\:]]#" depth' \
    '-f[use the fast patchset import strategy]' \
    $help_arg \
    '-o[use old-style branch names]' \
    '-T[create a tag for every commit]' \
    '-t[use given directory as temporary directory]:directory:_directories' \
    $verbose_arg \
    ':archive/branch' \
    '::archive/branch'
}

(( $+functions[_git-convert-objects] )) ||
_git-convert-objects () {
  _nothing
}

# TODO: Could use _cvs_root from _cvs for completing argument to -d.
# TODO: -h is undocumented.
(( $+functions[_git-cvsexportcommit] )) ||
_git-cvsexportcommit () {
  _arguments \
    '-c[commit automatically if the patch applied cleanly]' \
    '-p[be pedantic (paranoid) when applying patches]' \
    '-a[add authorship information]' \
    '-d[set an alternative CVSROOT to use]:cvsroot' \
    '-f[force the merge, even if the files are not up to date]' \
    '-P[force the parent commit, even if it is not a direct parent]' \
    '-m[prepend the commit message with the provided prefix]:message prefix' \
    $verbose_arg \
    $help_arg \
    '::parent commit id:__git_commits' \
    ':commit id:__git_commits' && ret=0
}

# TODO: _cvs_root for -d would be nice
(( $+functions[_git-cvsimport] )) ||
_git-cvsimport () {
  _arguments \
    $author_conversion_file_arg \
    '-C[specify the git repository to import into]:directory:_directories' \
    '-d[specify the root of the CVS archive]:cvsroot' \
    $help_arg \
    '-i[do not perform a checkout after importing]' \
    '-k[remove keywords from source files in the CVS archive]' \
    '-m[attempt to detect merges based on the commit message]' \
    '-M[attempt to detect merges based on the commit message with custom pattern]:pattern' \
    '-o[specify the branch into which you wish to import]:branch:__git_branch_names' \
    '-P[read cvsps output file]:file:_files' \
    '-p[specify additionaly options for cvsps]:cvsps-options' \
    '-s[substitute the "/" character in branch names with given substitution]:substitute' \
    '-u[convert underscores in tag and branch names to dots]' \
    '-S[skip paths matching given regex]:regex' \
    '-a[import all commits, including recent ones]' \
    '-L[limit the number of commits imported]: :_guard "[[\:digit\:]]" limit' \
    $verbose_arg \
    '-z[specify timestamp fuzz factor to cvsps]:fuzz-factor' \
    ':cvsmodule' && ret=0
}

(( $+functions[_git-cvsserver] )) ||
_git-cvsserver () {
  _message "you probably should not be issuing this command; it is an internal git helper"
}

(( $+functions[_git-lost-found] )) ||
_git-lost-found () {
  _nothing
}

(( $+functions[_git-pack-refs] )) ||
_git-pack-refs () {
  _arguments \
    '--all[pack all refs]' \
    "(        --no-prune)--prune[remove loose refs after packing them]" \
    "(--prune           )--no-prune[don't remove loose refs after packing them]" && ret=0
}

# TODO: something better
(( $+functions[_git-merge-one-file] )) ||
_git-merge-one-file () {
  _message "you probably should not be issuing this command"
}

(( $+functions[_git-prune] )) ||
_git-prune () {
  _arguments -S \
    '-n[do not remove anything; just report what would have been removed]'
    '*::heads:__git_heads' && ret=0
}

(( $+functions[_git-relink] )) ||
_git-relink () {
  _arguments \
    '--safe[stop if two objects with the same hash exist but have different sizes]' \
    ':directory:_directories' \
    ':directory:_directories' \
    '*:directory:_directories' && ret=0
}

# TODO: import stuff from _svn
# TODO: Improve completion of -P argument.
(( $+functions[_git-svnimport] )) ||
_git-svnimport () {
  _arguments \
    $author_conversion_file_arg \
    '-b[specify the name of the SVN branches directory]:directory:_directories' \
    '-C[specify the git repository to import into]:directory:_directories' \
    '-d[use direct HTTP-requests if possible for logs only]:path' \
    '-D[use direct HTTP-requests if possible]:path' \
    $help_arg \
    '-i[do not perform a checkout after importing]' \
    '-l[limit the number of SVN changesets to pull]: :_guard "[[\:digit\:]]#" number' \
    '-m[attempt to detect merges based on the commit message]' \
    '-M[attempt to detect merges based on the commit message with custom pattern]:pattern' \
    '-o[specify the branch into which you wish to import]:branch' \
    '-r[prepend "rX: " to commit messages, where X is the subversion revision]' \
    '-s[specify the change number to start importing from:start-revision' \
    '-T[specify the name of the SVN tags directory]:directory:_directories' \
    '-t[specify the name of the SVN trunk]:trunk:_directories' \
    '-I[import svn:ignore directory property to files with given name]:ignored file:_files' \
    '-R[specify how often git repository should be repacked]: :_guard "[[\:digit\:]]#" "number of revisions"' \
    '-P[import only given path of the SVN tree]::_directory' \
    $verbose_arg \
    ':svn-repositry-url:_urls' \
    '::directory:_directories' && ret=0
}

# TODO: how do we complete argument 1?
(( $+functions[_git-symbolic-ref] )) ||
_git-symbolic-ref () {
  _arguments -A '-*' \
    '-q[do not issue error if specified name is not a symbolic ref]' \
    '-m[update reflog for specified name with specied reason]:reason for update' \
    ':symbolic reference' \
    '::reference:__git_references' && ret=0
}

(( $+functions[_git-tag] )) ||
_git-tag () {
  local message_args=

  if (( words[(I)-[asu]] )); then
    message_args=(
      '(   -F)-m[specify tag message]:message'
      '(-m   )-F[read tag message from given file]:message file:_files')
  fi

  _arguments -A '-*' \
    - creation \
      '(   -s -u)-a[create an unsigned, annotated tag]' \
      '(-a    -u)-s[create an signed and annotated tag]' \
      '(-a -s   )-u[create a tag, annotated and signed with the given key]:secret key:__git_gpg_secret_keys' \
      '(   -v)-f[create a new tag even if one with the same name already exists]' \
      '(-f   )-v[verifies the gpg signutare of the given tag]' \
      $message_args \
      ':tag name:__git_tags' \
      '::head:__git_revisions' \
    - deletion \
      '-d[delete tags]:*:tag names:__git_tags' \
    - listing \
      '-l[list tags matching pattern]:pattern' && ret=0
}
__git_zstyle_default ':completion::complete:git-tag:deletion-option-d-rest:*' ignore-line yes

(( $+functions[_git-update-ref] )) ||
_git-update-ref () {
  _arguments \
    '-m[update reflog for specified name with specied reason]:reason for update' \
    '(:)-d[delete given reference after verifying its value]:symbolic reference:__git_revisions:old reference:__git_revisions' \
    ':symbolic reference:__git_revisions' \
    ':new reference:__git_revisions' \
    '::old reference:__git_revisions' && ret=0
}

(( $+functions[_git-check-ref-format] )) ||
_git-check-ref-format () {
  _arguments \
    ':reference:__git_revisions' && ret=0
}


(( $+functions[_git-cherry] )) ||
_git-cherry () {
  _arguments \
    $verbose_arg \
    ':upstream:__git_revisions' \
    '::head:__git_revisions' \
    '::limit:__git_revisions' && ret=0
}

(( $+functions[_git-count-objects] )) ||
_git-count-objects () {
  _arguments \
    '-v[also report number of in-pack objects and objects that can be removed]' && ret=0
}

# TODO: do better than _directories?  The directory needs to be a git-repository,
# so one could check for a required file in the given directory.
# TODO: --interpolated-path should complete %H, %CH, %IP, %P, and %D.
(( $+functions[_git-daemon] )) ||
_git-daemon () {
  _arguments -S \
    '--strict-paths[match paths exactly]' \
    '--base-path=-[remap all the path requests as relative to the given path]:path:_directories' \
    '--interpolated-path=-[dynamically construct alternate paths]:path:_directories' \
    '--export-all[allow pulling from all repositories without verification]' \
    '(--port --listen --user --group)--inetd[run server as an inetd service]' \
    '(--inetd)--listen=-[listen on a specific IP address or hostname]:hostname:_hosts' \
    '(--inetd)--port=-[specify port to listen to]:port:_ports' \
    '--init-timeout=-[specify timeout between connection and request]: :_guard "[[\:digit\:]]#" timeout' \
    '--timeout=-[specify timeout for sub-requests]: :_guard "[[\:digit\:]]#" timeout' \
    '--syslog[log to syslog instead of stderr]' \
    '--user-path=-[allow ~user notation to be used in requests]::path:_directories' \
    '--verbose[log details about incoming connections and requested files]' \
    '--reuseaddr[reuse addresses when already bound]' \
    '(--syslog)--detach[detach from the shell]' \
    '--pid-file=-[save the process id in given file]:pid file:_files' \
    '--user=-[set uid of daemon]:user:_users' \
    '--group=-[set gid of daemon]:group:_groups' \
    '--enable=-[enable site-wide service]:service:__git_daemon_service' \
    '--disable=-[disable site-wide service]:service:__git_daemon_service' \
    '--allow-override[allow overriding site-wide service]:service:__git_daemon_service' \
    '--forbid-override[forbid overriding site-wide service]:service:__git_daemon_service' \
    '*:repository:_directories' && ret=0
}

(( $+functions[_git-get-tar-commit-id] )) ||
_git-get-tar-commit-id () {
  _message 'no arguments allowed; accepts tar-file on standard input'
}

(( $+functions[_git-instaweb] )) ||
_git-instaweb () {
  _arguments \
    '(-l --local)'{-l,--local}'[bind the web server to 127.0.0.1]' \
    '(-d --httpd)'{-d,--httpd=}'[HTTP-daemon command-line that will be executed]:command line' \
    '(-m --module-path)'{-m,--module-path=}'[module path for the Apache HTTP-daemon]:module path:_directories' \
    '(-p --port)'{-p,--port=}'[port to bind web server to]: :_guard "[[\:digit\:]]" port' \
    '(-b --browser)'{-b,--browser=}'[web-browser command-line that will be executed]:command line' \
    '--start[start the HTTP-daemon and exit]' \
    '--stop[start the HTTP-daemon and exit]' \
    '--restart[restart the HTTP-daemon and exit]' && ret=0
}

(( $+functions[_git-mailinfo] )) ||
_git-mailinfo () {
  _arguments \
    '-k[do not strip/add \[PATCH\] from the first line of the commit message]' \
    '(-u --encoding)-u[encode commit information in UTF-8]' \
    '(-u --encoding)--encoding[encode commit information in given encoding]:encoding:__git_encodings' \
    ':message file:_files' \
    ':patch file:_files' && ret=0
}

# TODO:
# /* Backwards compatibility: if no -o specified, accept
#    <mbox> <dir> or just <dir> */
(( $+functions[_git-mailsplit] )) ||
_git-mailsplit () {
  _arguments -S \
    '-b[if file does not begin with "From " line, assume it is a single mail message]' \
    '-d-[specify number of leading zeros]: :_guard "[[\:digit\:]]#" precision' \
    '-f-[skip the first N numbers]: :_guard "[[\:digit\:]]#" number' \
    '-o-[directory in which to place individual messages]:directory:_directories' \
    '*::mbox file:_files' && ret=0
}

(( $+functions[_git-patch-id] )) ||
_git-patch-id () {
  _message 'no arguments allowed; accepts patch on standard input'
}

(( $+functions[_git-request-pull] )) ||
_git-request-pull () {
  _arguments \
    ':start commit:__git_commits' \
    ':url:_urls' \
    '::end commit:__git_commits'
}

(( $+functions[_git-rev-parse] )) ||
_git-rev-parse () {
  _arguments \
    '(--revs-only --no-revs)--revs-only[do not output flags and parameters not meant for "git-rev-list"]' \
    '(--revs-only --no-revs)--no-revs[do not output flags and parameters meant for "git-rev-list"]' \
    '(--flags --no-flags)--flags[do not output non-flag parameters]' \
    '(--flags --no-flags)--no-flags[do not output flag parameters]' \
    '--default[use "arg" if there is no parameter given]:arg' \
    '--verify[verify parameter to be usable]' \
    '--sq[output single shell-quoted line]' \
    '--not[toggle ^ prefix of object names]' \
    '--symbolic[output in a format as true to input as possible]' \
    '--all[show all refs found in $GIT_DIR/refs]' \
    '--branches[show branch refs found in $GIT_DIR/refs/heads]' \
    '--tags[show tag refs found in $GIT_DIR/refs/tags]' \
    '--remotes[show tag refs found in $GIT_DIR/refs/remotes]' \
    '--show-prefix[show path of current directory relative to top-leve directory]' \
    '--show-cdup[show path of top-level directory relative to current directory]' \
    '--git-dir[show "$GIT_DIR" if defined else show path to ".git" directory]' \
    '--short=-[show only handful hexdigits prefix]:: :_guard "[[\:digit\:]]#" number' \
    {--after=-,--since=-}'[show "--max-age=" parameter corresponding given date string]:datestring' \
    {--berore=-,--until=-}'[show "--min-age=" parameter corresponding given date string]:datestring' \
    '*:args' && ret=0
}

(( $+functions[_git-runstatus] )) ||
_git-runstatus () {
  _arguments \
    '--color[show colored status, highlighting modified files]' \
    '--nocolor[turn of colored output]' \
    '--amend[show status based on HEAD^1 instead of HEAD]' \
    '--verbose[show unified diff of all file changes]' \
    '--untracked[show files in untracked directories]' && ret=0
}

(( $+functions[_git-rm] )) ||
_git-rm () {
  _arguments -S -A '-*' \
    '-f[override the up-to-date check]' \
    "-n[don't actually remove the files, just show if they exist in the index]" \
    '-r[allow recursive removal when a leading directory-name is given]' \
    '--cached[only remove files from the index]' \
    '*:files:__git_cached_files' && ret=0
}

(( $+functions[_git-send-email] )) ||
_git-send-email () {
  _arguments \
    '--bcc=["Bcc:" value for each email]:email address:_email_addresses' \
    '--cc=[starting "Cc:" value for each email]:email address:_email_addresses' \
    '(--no-chain-reply-to)--chain-reply-to[each email will be sent as a reply to the previous one sent]' \
    '(--chain-reply-to)--no-chain-reply-to[all emails after the first will be sent as replies to the first one]' \
    '--compose[use $EDITOR to edit an introductory message for the patch series]' \
    '--from=[specify the sender of the emails]:email address:_email_addresses' \
    '--in-reply-to=[specify the contents of the first In-Reply-To header]:message-id' \
    '--no-signed-off-by-cc[do not add emails foudn in "Signed-off-by:" lines to the "Cc:" list]' \
    '--quiet[be less verbose]' \
    '--smtp-server=[specify the outgoing smtp server]:smtp server:_hosts' \
    '--subject=[specify the initial subject of the email thread]:subject' \
    '--suppress-from[do not add the "From:" address to the "Cc:" list]' \
    '--dry-run[do everything except actually send the emails]' \
    '--envelope-sender[specify the envelope sender used to send the emails]:email address:_email_addresses' \
    '--to=[specify the primary recipient of the emails]:email address:_email_addresses' \
    '*:file:_files' && ret=0
}

# TODO: -h, -H, and --help are undocumented.
# TODO: -V and --version are undocumented.
# TODO: --minimize-connections is undocumented.
# TODO: --remote is undocumented.
# TODO: --log-window-size is undocumented.
# TODO: --config-dir is undocumented.
# TODO: --no-auth-cache is undocumented.
# TODO: -C and --copy-similarity are undocumented.
# TODO: --fetch-all and --all are undocumented.
# TODO: -v and --verbose are undocumented.
# TODO: -r and --revisions for show-ignore are undocumented.
# TODO: migrate is undocumented.
# TODO: --minimize for migrate is undocumented.
# TODO: -r, --color, --pager, and --non-recursive for log are undocumented.
# TODO: --local for rebase is undocumented.
# TODO: --message, -m, --file, -F, --revision, and -r for commit-diff are
# undocumented.
(( $+functions[_git-svn] )) ||
_git-svn () {
  local curcontext=$curcontext state line
  declare -A opt_args

  _arguments -C \
    '(- :)--version[display version information]' \
    '(- :)--help[display help message]' \
    ':command:->command' \
    '*::options:->options' && ret=0

  case $state in
    (command)
      declare -a commands

      commands=(
        'init:initialize an empty git repository with additional svn data'
        'fetch:fetch revisions from the SVN remote'
        'clone:same as init, followed by fetch'
        'rebase:fetch revs from SVN parent of HEAD and rebase current work on it'
        'dcommit:commit diffs from given head onto SVN repository'
        'log:output SVN log-messages'
        "find-rev:output git commit corresponding to the given SVN revision's hash"
        'set-tree:commit given commit or tree to SVN repository'
        'show-ignore:output corresponding .gitignore file of svn:ignore'
        'commit-diff:commit diff of two tree-ishs')
      ;;
    (options)
      declare -a arguments

      if [[ $line[1] == (fetch|clone|dcommit|set-tree|rebase|migrate|init) ]]; then
        arguments+=(
          '--username=[username to use for SVN transport]:username:_users'
          '--config-dir=[undocumented]:configuration directory:_directories'
          '--no-auth-cache[undocumented]')
      fi

      if [[ $line[1] == (fetch|clone|dcommit|set-tree|rebase|log) ]]; then
        arguments+=(
          '(   --authors-file)'$author_conversion_file_arg
          '(-A               )'$long_author_conversion_file_arg)
      fi

      # TODO: --repack-flags can be improved by actually completing the legal
      # flags to git-repack.
      if [[ $line[1] == (fetch|clone|dcommit|set-tree|rebase) ]]; then
        arguments+=(
          '(-q --quiet)'{-q,--quiet}'[make git-svn less verbose]'
          '--repack=[repack files (for given number of revisions)]:: :_guard "[[\:digit\:]]#" "revision limit"'
          '(--repack-flags --repack-args --repack-opts)'{--repack-flags=,--repack-args=,--repack-opts=}'[flags to pass to git-repack]:git-repack flags'
          '(                --no-follow-parent)--follow-parent[follow parent commit]'
          '(--follow-parent                   )--no-follow-parent[do not follow parent commit]'
          '--log-window-size=[undocumented]')
      fi

      if [[ $line[1] == (clone|init) ]]; then
        arguments+=(
          $shared_arg
          $template_arg
          '(-T --trunk)'{-T-,--trunk=}'[set trunk sub-directory]:trunk sub-directory:->subdirectory'
          '(-t --tags)'{-t-,--tags=}'[set tags sub-directory]:tags sub-directory:->subdirectory'
          '(-b --branches)'{-b-,--branches=}'[set branches sub-directory]:branches sub-directory:->subdirectory'
          '--no-metadata[set svn-remote.X.noMetadata]'
          '--use-svm-props[set svn-remote.X.useSvmProps]'
          '--use-svnsync-props[set svn-remote.X.useSvnsyncProps]'
          '--rewrite-root=[set svn-remote.X.rewriteRoot]:new root'
          '--prefix=[prefix to use for names of remotes]:path prefix:_directories -r ""')
      fi

      if [[ $line[1] == (dcommit|set-tree|commit-diff) ]]; then
        arguments+=(
          '--rmdir[remove empty directories from SVN tree after commit]'
          '(-e --edit)'{-e,--edit}'[edit commit message before committing]'
          $find_copies_harder_arg
          $diff_l_arg
          '(-C --copy-similarity)'{-C-,--copy-similarity=}'[undocumented]:number')
      fi

      # FIXME: What arguments does clone actually take here?
      if [[ $line[1] == (fetch|clone) ]]; then
        arguments+=(
          '(-r --revision)'{-r,--revision}'[only fetch given revision or revision range]:revision:->__git_svn_revisions'
          '::svn remote:__git_svn-remotes')
      fi

      if [[ $line[1] == (dcommit|rebase) ]]; then
        arguments+=(
          '(-m --merge)'{-m,--merge}'[use merging strategies, if necessary]')
      fi

      if [[ $line[1] == (fetch|dcommit|rebase) ]]; then
        arguments+=(
          '(--fetch-all --all)'{--fetch-all,--all}'[undocumented]')
      fi

      if [[ $line[1] == (dcommit|rebase) ]]; then
        arguments+=(
            '*'{-s,--strategy=-}'[use given merge strategy]:merge strategy:__git_merge_strategies')
      fi

      if [[ $line[1] == (dcommit|log|rebase) ]]; then
        arguments+=(
          '(- --verbose)'{-v,--verbose}'[output extra information]')
      fi

      case $line[1] in
        (clone)
          arguments+=(
            ':url:_urls'
            '::directory:_directories')
          ;;
        (set-tree)
          arguments+=('--stdin[read list of commits to commit from stdin]')
          ;;
        (show-ignore)
          arguments+=('-r --revision)'{-r,--revision)'[undocumented]:revision:->__git_svn_revisions'
        (dcommit)
          arguments+=(
            '(-n --dry-run)'{-n,--dry-run}'[output git-commands that would show diffs that would be committed]')
          ;;
        (migrate)
          arguments+=(
            '--minimize[undocumented]')
          ;;
        (log)
          __git_setup_revision_arguments

          arguments+=(
            $revision_arguments
            '(-r --revision)'{-r-,--revision=}'[revisions to output log information for]: :__git_svn_revision_numbers'
            '--limit=[like --max-count, but not counting merged/excluded commits]: :_guard "[[\:digit\:]]#" limit'
            '--incremental[give output suitable for concatenation]'
            '--show-commit[output git commit SHA-1, as well]'
            '--oneline[similar to --pretty=oneline]'
            '--color[undocumented]'
            '--pager[undocumented]:pager:_files -g *(*)'
            '--non-recursive[undocumented]')
          ;;
        (rebase)
          arguments+=(
            '--local[undocumented]')
          ;;
        (commit-diff)
          arguments+=(
            '(-m --message)'{-m-,--message=}'[undocumented]:message'
            '(-F --file)'{-F-,--file=}'[undocumented]:file:_files'
            '(-r --revision)'{-r-,--revision=}'[undocumented]:revision:__git_svn_revisions')
          ;;
      esac

      _arguments -C \
        '(-h -H --help)'{-h,-H,--help}'[display usage information]' \
        '(-V --version)'{-V,--version}'[display version information]' \
        '--minimize-connections[undocumented]' \
        '(-R --svn-remote --remote)'{-R,--svn-remote,--remote}'[svn remote to use]:svn remote:__git_svn-remotes'
        '(-i --id)'{-i,--id}'[set GIT_SVN_ID]:GIT_SVN_ID'
        $arguments && ret=0

      case $state in
        (subdirectory)
          _alternative \
            'sub-directories:sub-directory:_directories' \
            'urls: :_urls' && ret=0
          ;;
      esac
      ;;
  esac
}

(( $+functions[_git-stripspace] )) ||
_git-stripspace () {
  _message 'no arguments allowed; accepts input file on standard input'
}

(( $+functions[_git-mergetool] )) ||
_git-mergetool () {
  local curcontext=$curcontext state line
  typeset -A opt_args

  _arguments -C \
    '(-t --tool)'{-t,--tool=}':merge resolution tool:(kdiff3 tkdiff meld xxdiff emerge vimdiff gvimdiff opendiff)' \
    '*:conflicted file:_files' && ret=0
}

# ---

(( $+functions[__git_guard] )) ||
__git_guard () {
  declare -A opts

  zparseopts -K -D -A opts M: J: V: 1 2 n F: X:

  [[ "$PREFIX$SUFFIX" != $~1 ]] && return 1

  if (( $+opts[-X] )); then
    _message -r $opts[-X]
  else
    _message -e $2
  fi

  [[ -n "$PREFIX$SUFFIX" ]]
}

__git_guard_branch-name () {
  if [[ -n "$PREFIX$SUFFIX" ]]; then
    _call_program check-ref-format git check-ref-format "refs/heads/$PREFIX$SUFFIX" &>/dev/null
    (( ${#pipestatus:#0} > 0 )) && return 1
  fi

  _message -e 'branch-name'

  [[ -n "$PREFIX$SUFFIX" ]]
}

__git_guard_diff-stat-width () {
  if [[ $PREFIX == *,* ]]; then
    compset -P '*,'
    _guard "[[:digit:]]#" "filename width"
  else
    compset -S ',*'
    _guard "[[:digit:]]#" "width"
  fi
}

(( $+functions[__git_command_successful] )) ||
__git_command_successful () {
  if (( ${#pipestatus:#0} > 0 )); then
    _message 'not a git repository'
    return 1
  fi
  return 0
}

(( $+functions[__git_objects] )) ||
__git_objects () {
  __git_guard $* "[[:xdigit:]]#" "object"
}

(( $+functions[__git_trees] )) ||
__git_trees () {
  __git_guard $* "[[:xdigit:]]#" "tree"
}

(( $+functions[__git_tree_ishs] )) ||
__git_tree_ishs () {
  __git_commits 
}

(( $+functions[__git_blobs] )) ||
__git_blobs () {
  _git_guard $* "[[:xdigit:]]#" 'blob id'
}

(( $+functions[__git_stages] )) ||
__git_stages () {
  __git_guard $* "[[:digit:]]#" 'stage'
}

(( $+functions[__git_files] )) ||
__git_files () {
  local expl files ls_opts opts gitdir

  zparseopts -D -E -a opts -- -cached -deleted -modified -others -ignored -unmerged -killed

  gitdir=$(_call_program gitdir git rev-parse --git-dir 2>/dev/null)
  __git_command_successful || return

  ls_opts=("--exclude-per-directory=.gitignore")
  [[ -f "$gitdir/info/exclude" ]] && ls_opts+="--exclude-from=$gitdir/info/exclude"

  files=(${(ps:\0:)"$(_call_program files git ls-files -z $ls_opts $opts 2>/dev/null)"})
  __git_command_successful || return

  _wanted files expl 'index file' _multi_parts $@ - / files
}

(( $+functions[__git_cached_files] )) ||
__git_cached_files () {
  __git_files $* --cached
}

(( $+functions[__git_deleted_files] )) ||
__git_deleted_files () {
  __git_files $* --deleted
}

(( $+functions[__git_killed_files] )) ||
__git_killed_files () {
  __git_files $* --killed
}

(( $+functions[__git_modified_files] )) ||
__git_modified_files () {
  __git_files $* --modified
}

(( $+functions[__git_other_files] )) ||
__git_other_files () {
  __git_files $* --others
}

(( $+functions[__git_unmerged_files] )) ||
__git_unmerged_files () {
  __git_files $* --unmerged
}

#this is for git-commit which can take files both git-added and not
(( $+functions[__git_changed_files] )) ||
__git_changed_files () {
  gitdir=$(_call_program gitdir git rev-parse --git-dir 2>/dev/null)
  __git_command_successful || return

  files=(${(ps:\0:)"$(_call_program files git diff-index -z --name-only HEAD 2>/dev/null)"})
  __git_command_successful || return

  _wanted files expl 'index file' _multi_parts $@ - / files
}

(( $+functions[__git_tree_files] )) ||
__git_tree_files () {
  local multi_parts_opts

  zparseopts -D -E -a multi_parts_opts M: J: V: 1 2 n F: X:

  local tree
  integer at_least_one_tree_added
  local -a tree_files

  (( at_least_one_tree_added = 0 ))
  for tree in $*; do
    tree_files+=(${(ps:\0:)"$(_call_program tree-files git ls-tree --name-only -z -r $tree 2>/dev/null)"})
    __git_command_successful && (( at_least_one_tree_added = 1 ))
  done

  if (( !at_least_one_tree_added )); then
    return
  fi

  local expl

  # FIXME: Why doesn’t -f to compadd work here?
  _wanted files expl 'tree file' _multi_parts $multi_parts_opts - / tree_files
}

# TODO: deal with things that __git_heads and __git_tags has in common (i.e.,
# if both exists, they need to be completed to heads/x and tags/x.
(( $+functions[__git_commits] )) ||
__git_commits () {
  _alternative \
    'heads::__git_heads' \
    'tags::__git_tags'
}

(( $+functions[__git_committishs] )) ||
__git_committishs () {
  __git_commits
}

# TODO: deal with prefixes and suffixes listed in git-rev-parse
(( $+functions[__git_revisions] )) ||
__git_revisions () {
  __git_commits $*
}

(( $+functions[__git_commits2] )) ||
__git_commits2 () {
  compset -P '\\\^'
  __git_commits
}

(( $+functions[__git_commit_ranges] )) ||
__git_commit_ranges () {
  compset -P '*..'
  __git_commits $*
}

# FIXME: these should be imported from _ssh
# TODO: this should take -/ to only get directories
_remote_files () {
  # There should be coloring based on all the different ls -F classifiers.
  local expl rempat remfiles remdispf remdispd args suf ret=1

  if zstyle -T ":completion:${curcontext}:files" remote-access; then
    zparseopts -D -E -a args p: 1 2 4 6 F:
    if [[ -z $QIPREFIX ]]
    then rempat="${PREFIX%%[^./][^/]#}\*"
    else rempat="${(q)PREFIX%%[^./][^/]#}\*"
    fi
    remfiles=(${(M)${(f)"$(_call_program files ssh $args -a -x ${IPREFIX%:} ls -d1FL "$rempat" 2>/dev/null)"}%%[^/]#(|/)})
    compset -P '*/'
    compset -S '/*' || suf='remote file'

#    remdispf=(${remfiles:#*/})
    remdispd=(${(M)remfiles:#*/})

    _tags files
    while _tags; do
      while _next_label files expl ${suf:-remote directory}; do
#        [[ -n $suf ]] && compadd "$@" "$expl[@]" -d remdispf \
#	    ${(q)remdispf%[*=@|]} && ret=0 
	compadd ${suf:+-S/} "$@" "$expl[@]" -d remdispd \
	    ${(q)remdispd%/} && ret=0
      done
      (( ret )) || return 0
    done
    return ret
  else
    _message -e remote-files 'remote file'
  fi
}

(( $+functions[__git_remote_repository] )) ||
__git_remote_repository () {
  local service

  service= _ssh

  if compset -P '*:'; then
    _remote_files
  else
    _ssh_hosts -S:
  fi
}

(( $+functions[__git_repository] )) ||
__git_repository () {
  _alternative \
    'directories::_directories' \
    'remote repositories::__git_remote_repository'
}

# should also be $GIT_DIR/remotes/origin
(( $+functions[__git_any_repositories] )) ||
__git_any_repositories () {
  _alternative \
    'directories::_directories' \
    'remotes::__git_remotes' \
    'remote repositories::__git_remote_repository'
}

(( $+functions[__git_remotes] )) ||
__git_remotes () {
  local expl gitdir remotes

  gitdir=$(_call_program gitdir git rev-parse --git-dir 2>/dev/null)
  __git_command_successful || return

#  zparseopts -a opts X+:
#
#  if (( !$opts[(I)-X] )); then
#    descr=remote
#  fi

  remotes=(${${(f)"$(_call_program remotes git config --get-regexp '"^remote\..*\.url$"')"}//#(#b)remote.(*).url */$match[1]})
  __git_command_successful || return

  # TODO: Should combine the two instead of either or.
  if (( $#remotes > 0 )); then
    _wanted remotes expl remote compadd $* - $remotes
  else
    _wanted remotes expl remote _files $* - -W "($gitdir/remotes)" -g "$gitdir/remotes/*"
  fi
}

(( $+functions[__git_ref_specs] )) ||
__git_ref_specs () {
  if compset -P '*:'; then
    __git_heads
  else
    compset -P '+'
    if compset -S ':*'; then
      __git_heads
    else
      __git_heads -S ':'
    fi
  fi
}

(( $+functions[__git_signoff_file] )) ||
__git_signoff_file () {
  _alternative \
    'signoffs:signoff:(yes true me please)' \
    'files:signoff file:_files'
}

(( $+functions[__git_tag_ids] )) ||
__git_tag_ids () {
}

(( $+functions[__git_heads] )) ||
__git_heads () {
  local expl
  declare -a branch_names

  branch_names=(${${(f)"$(_call_program heads git branch -a 2>/dev/null)"}#[* ] })
  __git_command_successful || return

  _wanted heads expl branch-name compadd $* - $branch_names
}

(( $+functions[__git_tags] )) ||
__git_tags () {
  local expl
  declare -a tag_names

  tag_names=(${${(f)"$(_call_program tags git tag -l 2>/dev/null)"}#[* ] })
  __git_command_successful || return

  _wanted tags expl tag-name compadd $* - $tag_names
}

# TODO: depending on what options are on the command-line already, complete
# only tags or heads
# TODO: perhaps caching is unnecessary.  usually won’t contain that much data
# TODO: perhaps provide alternative here for both heads and tags (and use
# __git_heads and __git_tags)
# TODO: instead of "./.", we should be looking in the repository specified as
# an argument to the command (but default to "./." I suppose (why not "."?))
(( $+functions[__git_references] )) ||
__git_references () {
#  _alternative \
#    'heads::__git_heads' \
#    'tags::__git_tags' && ret=0
  local expl

  # TODO: deal with GIT_DIR
  if [[ $_git_refs_cache_pwd != $PWD ]]; then
    _git_refs_cache=(${${${(f)"$(_call_program references git ls-remote ./. 2>/dev/null)"}#*$'\t'}#refs/(heads|tags)/})
    __git_command_successful || return
    _git_refs_cache_pwd=$PWD
  fi

  _wanted references expl 'references' compadd - $_git_refs_cache
}

(( $+functions[__git_local_references] )) ||
__git_local_references () {
  local expl

  if [[ $_git_local_refs_cache_pwd != $PWD ]]; then
    _git_local_refs_cache=(${${${(f)"$(_call_program references git ls-remote ./. 2>/dev/null)"}#*$'\t'}#refs/})
    __git_command_successful || return
    _git_local_refs_cache_pwd=$PWD
  fi

  _wanted references expl 'references' compadd - $_git_local_refs_cache
}

(( $+functions[__git_remote_references] )) ||
__git_remote_references () {
  __git_references
}

(( $+functions[__git_branch_names] )) ||
__git_branch_names () {
  local expl
  declare -a branch_names

  branch_names=(${${(f)"$(_call_program branch-names git branch 2>/dev/null)"}#[* ] })
  __git_command_successful || return

  _wanted branch-names expl branch-name compadd $* - $branch_names
}

# TODO: Add merge.*.(name|driver|recursive) and diff.*.(command|funcname) (see
# gitattributes(5)).
(( $+functions[__git_config_name] )) ||
__git_config_name () {
  local label=names

  declare -a names

  if [[ -prefix alias.* ]]; then
    _message 'command-alias name'
  elif [[ -prefix branch.*.* ]]; then
    compset -P 'branch.*.'

    names=(
      'remote:what remote git-fetch should fetch'
      'merge:default refspec to be marked for merging')
  elif [[ -prefix branch.* ]]; then
    compset -P 'branch.'

    __git_branch_names -S '.' -r '.'
    return
  elif [[ -prefix remote.*.* ]]; then
    compset -P 'remote.*.'

    names=(
      'url:URL of a remote repository'
      'fetch:default set of refspecs for git-fetch'
      'push:default set of refspecs for git-push'
      'skipDefaultUpdate:whether to skip this remote when running git-remote'
      'receivepack:default program to execute on remote when pushing'
      'uploadpack:default program to execute on remote when fetching'
      'tagopt:options for retrieving remote tags')
  elif [[ -prefix remote.* ]]; then
    compset -P 'remote.'

    __git_remotes -S '.' -r '.'
    return
  elif [[ -prefix remotes.* ]]; then
    compset -P 'remotes.'

    __git_remote-groups
    return 
  elif [[ -prefix gitcvs.* ]]; then
    names=(
      'enabled:whether the cvs pserver interface is enabled'
      'logfile:name of log file for cvs pserver'
      'allbinary:whether to treat all files from CVS as binary')

    if [[ -prefix gitcvs.*.* ]]; then
      compset -P 'gitcvs.*.'

      label="gitcvs ${${words[CURRENT]#gitcvs.}%.*}-specific setting"
    else
      compset -P 'gitcvs.'

      label='gitcvs setting'

      names+=(
        'dbname:name of database to use'
        'dbdriver:name of DBI driver to use'
        'dbuser:username to connect to database as'
        'dbpass:password to use when connecting to database')

      declare -a suffixed_names
      suffixed_names=(
        'ext:ext-connection-method-specific settings'
        'pserver:pserver-connection-method-specific settings')

      _describe -t suffixed-names 'gitcvs connection-specific setting' suffixed_names -M 'm:{a-zA-Z}={A-Za-z}' -M 'r:|.=* r:|=*' -S '.' -r '.' && ret=0
    fi
  elif [[ -prefix svn-remote.*.* ]]; then
    compset -P 'svn.*.'

    label="git-svn ${${words[CURRENT]#svn.}%.*}-specific setting"

    names=(
      'noMetadata:disable git-svn-id\: lines at end of commits (fetch, clone, dcommit, set-tree, rebase)'
      'useSvmProps:whether to use remappings of URLs and UUIDs from mirrors (fetch, clone, dcommit, set-tree, rebase)'
      'useSvnsyncProps:similar to useSvmProps, but for the svnsync command (fetch, clone, dcommit, set-tree, rebase)'
      'rewriteRoot:alternate root URL to use')

  elif [[ -prefix svn-remote.* ]]; then
    compset -P 'svn-remote.'

    __git_svn-remotes -M 'm:{a-zA-Z}={A-Za-z}' -M 'r:|.=* r:|=*' -S '.' -r '.' && ret=0
    return
  else
    names=(
      'core.fileMode:whether differences in the executable bit is relevant'
      "core.autocrlf:what type of conversion of CRLF's git should do"
      'core.symlinks:whether symlinks are treated as special files or not'
      'core.gitProxy:command to execute to establish a connection to remote server'
      'core.ignoreStat:whether modification times of files are ignored'
      'core.preferSymlinkRefs:whether symbolic-reference files should be symlinks'
      'core.bare:whether this repository has a working tree or not'
      'core.logAllRefUpdates:whether to log updates of references'
      'core.repositoryFormatVersion:internal variable determining the repository version'
      'core.sharedRepository:what kind of sharing is done for this repository'
      'core.warnAmbiguousRefs:whether to warn if a ref name is ambiguous'
      'core.compression:level of compression to apply to packs'
      'core.legacyheaders:whether to use the legacy object-header-format'
      'core.packedGitWindowSize:size of mappings of pack files'
      'core.packedGitLimit:maximum number of bytes to map from pack files'
      'core.deltaBaseCacheLimit:maximum size of cache for base objects'
      'apply.whitespace:default value for the --whitespace option to git-apply'
      'color.branch:when to color output of git-branch'
      'color.branch.current:color of the current branch'
      'color.branch.local:color of a local branch'
      'color.branch.remote:color of a remote branch'
      'color.branch.plain:color of other branches'
      'color.diff:when to color diff output'
      'color.diff.plain:color of context text'
      'color.diff.meta:color of metainformation'
      'color.diff.frag:color of hunk headers'
      'color.diff.old:color of removed lines'
      'color.diff.new:color of added lines'
      'color.diff.commit:color of commit headers'
      'color.diff.whitespace:color of dubious whitespace'
      'color.pager:whether the pager is fed colored output'
      'color.status:when to color output of git-status'
      'color.status.header:color of header text'
      'color.status.added:color of added, but not yet committed, files'
      'color.status.updated:color of updated, but not yet committed, files'
      'color.status.changed:color of changed, but not yet added in the index, files'
      'color.status.untracked:color of files not currently being tracked'
      'diff.renameLimit:number of files to consider when detecting copy/renames'
      'diff.renames:how hard to try to detect renames'
      'fetch.unpackLimit:maximum number of objects to unpack when fetching'
      'format.headers:additional email headers to include in email patches'
      'format.suffix:default suffix for output files from git-format-patch'
      'gc.packrefs:whether to allow git-gc to run git-pack-refs or not'
      'gc.reflogexpire:default age for "git reflog expire"'
      'gc.reflogexpireunreachable:default age for "git reflog expire" for unreachable'
      'gc.rerereresolved:number of days to keep records of resolved merges'
      'gc.rerereunresolved:number of days to keep records of unresolved merges'
      'http.sslVerify:whether to verify the SSL certificate for HTTPS'
      'http.sslCert:file containing SSL certificates for HTTPS'
      'http.sslKey:file containing the SSL private key for HTTPS'
      'http.sslCAInfo:file containing CA certificates to verify against for HTTPS'
      'http.sslCAPath:path containing files with CA certificates to verify against for HTTPS'
      'http.maxRequests:how many HTTP requests to launch in parallel'
      'http.lowSpeedLimit:lower limit for HTTP transfer-speed'
      'http.lowSpeedTime:duration for http.lowSpeedLimit'
      'http.noEPSV:whether to disable the use of the EPSV ftp-command'
      'i18n.commitEncoding:character encoding commit messages are stored in'
      'i18n.logOutputEncoding:character encoding commit messages are output in'
      'log.showroot:whether to show initial commit as a diff against an empty tree or not'
      'merge.summary:whether to include summaries of merged commits'
      'merge.tool:tool to use for merges (by git-mergetool)'
      'merge.verbosity:amount of output shown by recursive merge strategy'
      'pack.window:size of window used by git-pack-objects'
      'pull.octopus:default merge strategy to use when pulling multiple branches'
      'pull.twohead:default merge strategy to use when pulling a single branch'
      'repack.usedeltabaseoffset:whether to allow git-repack to use delta-base offsets'
      'show.difftree:default git-diff-tree options for git-show'
      'showbranch.default:default set of branches for git-show-branch'
      'tar.umask:umask to apply for git-tar-tree'
      'user.email:email address used for commits'
      'user.name:full name used for commits'
      'user.signingkey:default GPG key to use when creating signed tags'
      'whatchanged.difftree:default git-diff-tree arguments for git-whatchanged'
      'receive.unpackLimit:maximum number of objects to unpack when pushing'
      'receive.denyNonFastforwards:whether git-receive-pack denies ref updates which are not fast-forwards'
      'transfer.unpackLimit:default value for fetch.unpackLimit and receive.unpackLimit'
      'imap.Folder:IMAP folder to use with git-imap-send'
      'imap.Tunnel:tunneling command to use for git-imap-send'
      'imap.Host:host git-imap-send should connect to'
      'imap.User:user git-imap-send should log in as'
      'imap.Pass:password git-imap-send should use when logging in'
      'imap.Port:port git-imap-send should connect on'
      'instaweb.local:whether instaweb should bind to 127.0.0.1'
      'instaweb.httpd:HTTP-daemon command-line to execute for instaweb'
      'instaweb.port:port to bind HTTP daemon to for instaweb'
      'instaweb.browser:web-browser command-line to execute for instaweb'
      'instaweb.modulepath:module path for the Apache HTTP-daemon for instaweb'
      'svn.noMetadata:disable git-svn-id\: lines at end of commits (fetch, clone, dcommit, set-tree, rebase)'
      'svn.useSvmProps:whether to use remappings of URLs and UUIDs from mirrors (fetch, clone, dcommit, set-tree, rebase)'
      'svn.useSvnsyncProps:similar to useSvmProps, but for the svnsync command (fetch, clone, dcommit, set-tree, rebase)'
      'svn.followparent:whether to follow parent commit (fetch, clone, dcommit, set-tree, rebase)'
      'svn.authorsfile:default authors file to use (fetch, clone, dcommit, set-tree, rebase)'
      'svn.username:username to use for SVN transport (fetch, clone, dcommit, set-tree, rebase, init)'
      'svn.configdir:configuration directory to use (fetch, clone, dcommit, set-tree, rebase, init)'
      'svn.noauthcache:undocumented (fetch, clone, dcommit, set-tree, rebase, init)'
      'svn.quiet:make git-svn less verbose (fetch, clone, dcommit, set-tree, rebase)'
      'svn.repack:repack files (for given number of revisions) (fetch, clone, dcommit, set-tree, rebase)'
      'svn.repackflags:flags to pass to git-repack (fetch, clone, dcommit, set-tree, rebase)'
      'svn.logwindowsize:undocumented (fetch, clone, dcommit, set-tree, rebase)'
      'svn.shared:share repository amongst several users (init, clone)'
      'svn.template:directory to use as a template for the object database (init, clone)'
      'svn.trunk:trunk sub-directory to use (init, clone)'
      'svn.tags:tags sub-directory to use (init, clone)'
      'svn.branches:branches sub-directory to use (init, clone)'
      'svn.prefix:prefix to use for names on remotes (init, clone)'
      'svn.rmdir:remove empty directories from SVN tree after commit (dcommit, set-tree, commit-diff)'
      'svn.edit:edit commit message before committing (dcommit, set-tree, commit-diff)'
      'svn.findcopiesharder:try harder to find copies (dcommit, set-tree, commit-diff)'
      'svn.l:limit number of rename/copy targets to run (dcommit, set-tree, commit-diff)'
      'svn.copysimilarity:undocumented (dcommit, set-tree, commit-diff)'
      'svn.revision:only use given revision or revision range (fetch, clone, show-ignore, log, commit-diff)'
      'svn.merge:use merging strategies, if necessary (dcommit, rebase)'
      'svn.fetch-all:undocumented (fetch, dcommit, rebase)'
      'svn.stdin:read list of commits to commit from stdin (set-tree)'
      'svn.strategy:use given merge strategy (dcommit, rebase)'
      'svn.verbose:output extra information (dcommit, log, rebase)'
      'svn.dryrun:output git-commands that would show diffs that would be committed (dcommit)'
      'svn.minimize:undocumented (migrate)'
      'svn.limit:like --max-count, but not counting merged/excluded commits (log)'
      'svn.incremental:give output suitable for concatenation (log)'
      'svn.showcommit:output git commit SHA-1, as well (log)'
      'svn.oneline:similar to --pretty=oneline (log)'
      'svn.color:undocumented (log)'
      'svn.pager:undocumented (log)'
      'svn.nonrecursive:undocumented (log)'
      'svn.local:undocumented (rebase)'
      'svn.message:undocumented (commit-diff)'
      'svn.file:(commit-diff) undocumented')

    declare -a suffixed_names

    suffixed_names=(
      'alias:command aliases'
      'branch:prefix for branch-specific variables'
      'remote:prefix for remote-repository variables'
      'remotes:prefix for remote-groups'
      'gitcvs:prefix for git-cvsserver-specific variables'
      'svn-remote:prefix for git-svn remote-repository variables')

    _describe -t suffixed-names 'special name' suffixed_names -M 'm:{a-zA-Z}={A-Za-z}' -M 'r:|.=* r:|=*' -S '.' -r '.' && ret=0
  fi

  _describe -t names $label names -M 'm:{a-zA-Z}={A-Za-z}' -M 'r:|.=* r:|=*' && ret=0
}

(( $+functions[__git_config_gettable_name] )) ||
__git_config_gettable_name () {
  local expl
  declare -a names

  # TODO: This is strictly not correct, as names can have equal signs in them
  # as well.  However, there’s no good way to tell from the output of
  # git-config, so this’ll have to do until we write our own .git/config
  # parser (which will never happen because it’s not worth the trouble).
  names=(${${(f)"$(_call_program names git config --list)"}%%\=*})
  __git_command_successful || return

  _wanted names expl 'names' compadd $names
}

(( $+functions[__git_config_filtered_gettable_name] )) ||
__git_config_filtered_gettable_name () {
  local expl
  declare -a names

  # TODO: See __git_config_gettable_name for discussion on how to actually get
  # out the names, skipping the values.
  names=(${${(M)${${(f)"$(_call_program $2 git config --list)"}%%\=*}:#$1.*}#$1.})
  __git_command_successful || return

  _wanted $2 expl $3 compadd $names
}

(( $+functions[__git_remote-groups] )) ||
__git_remote-groups () {
  __git_config_filtered_gettable_name 'remotes' remote-groups 'remote-groups'
}

(( $+functions[__git_svn-remotes] )) ||
__git_svn-remotes () {
  local expl
  declare -a names

  # TODO: See __git_config_gettable_name for discussion on how to actually get
  # out the names, skipping the values.
  names=(${${${(M)${${(f)"$(_call_program $2 git config --list)"}%%\=*}:#svn-remote.*}#svn-remote.}%%.*})
  __git_command_successful || return

  _wanted svn-remotes expl 'svn remote' compadd $names
}

# TODO: It’d be really cool if both the default and the current value could be
# shown for all values.
(( $+functions[__git_config_values] )) ||
__git_config_values () {
  local compadd_opts

  zparseopts -D -E -a compadd_opts M: J: V: 1 2 n F: X:

  case $1 in
    ((#i)core.fileMode)
      declare -a booleans

      booleans=(
        {true,yes}':track changes to executable bit of files'
        {false,no}':ignore changes to executable bit of files')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.autocrlf)
      declare -a modes

      modes=(
        {true,yes}':convert CRLF to LF when reading and LF to CRLF when writing'
        {false,no}':leave CRLF at the end of lines in text files as is'
        'input:convert CRLF to LF when reading')

      _describe -t crlfmode 'crlf mode' modes
      ;;
    ((#i)core.symlinks)
      declare -a booleans

      booleans=(
        {true,yes}':record symlink files as such'
        {false,no}':check out symlinks as plain files that contain the link text')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.gitProxy)
      _message 'proxy command'
      ;;
    ((#i)core.ignoreStat)
      declare -a booleans

      booleans=(
        {true,yes}':working-copy files are unchanged until marked as changed'
        {false,no}':use lstat() to determine if a file has changed')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.preferSymlinkRefs)
      declare -a booleans

      booleans=(
        {true,yes}':use symbolic links for symbolic reference files'
        {false,no}':use "symref" files for symbolic reference files')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.bare)
      declare -a booleans

      booleans=(
        {true,yes}':the repository does not have a working directory'
        {false,no}':the repository has a working directory')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.logAllRefUpdates)
      declare -a booleans

      booleans=(
        {true,yes}':create ref files for branch heads'
        {false,no}":don't automatically create ref files")

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.repositoryFormatVersion)
      _message 'repository format version string (internal)'
      ;;
    ((#i)core.sharedRepository)
      __git_repository_permissions
      ;;
    ((#i)core.warnAmbiguousRefs)
      declare -a booleans

      booleans=(
        {true,yes}':warn if a ref name matches multiple refs'
        {false,no}':ignore ambiguous ref names')
      
      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.compression)
      declare -a levels

      levels=(
        '-1:default level of compression'
        '0:do not deflate files'
        '1:minimum compression'
        '2:a little more compression'
        '3:slightly more compression'
        '4:a bit more compression'
        '5:even more compression'
        '6:slightly even more compression'
        '7:getting there'
        '8:close to maximum compression'
        '9:maximum compression')

      _describe -t compression-level 'compression level' levels
      ;;
    ((#i)core.legacyheaders)
      declare -a booleans

      booleans=(
        {true,yes}':use compatiblity format for loose objects'
        {false,no}':use new, more efficient, format for loose objects')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)core.(packedGit(WindowSize|Limit)|deltaBaseCacheLimit))
      _guard '[[:digit:]]#([kmg]|)' 'number of bytes'
      ;;
    ((#i)alias.*)
      _message 'git sub-command with arguments'
      ;;
    ((#i)apply.whitespace)
      __git_apply_whitespace_strategies
      ;;
    ((#i)branch.*.remote)
      __git_remotes
      ;;
    ((#i)branch.*.merge)
      __git_references
      ;;
    ((#i)color.(branch|diff|pager|status))
      declare -a booleans

      booleans=(
        {always,true}':always output in color'
        {never,false}':never output in color'
        'auto:output in color if to a terminal')

      _describe -t boolean 'boolean' booleans
      ;;
    ((#i)color.*.*)
      compset -P '* '

      case ($words[CURRENT]) in
        (?*' '?*' '*)
          if [[ $words[CURRENT] == *(bold|dim|ul|blink|reverse)* ]]; then
            __git_colors
          else
            __git_color_attributes
          fi
          ;;
        (*)
          local suffix q_flag
          if [[ $words[CURRENT] == [\"\']* ]]; then
            suffix=' '
            q_flag=-q
          else
            suffix='\ '
          fi

          if [[ $words[CURRENT] == *(bold|dim|ul|blink|reverse)* ]]; then
            __git_colors -S $suffix $q_flag
          else
            _alternative \
              'colors:color:__git_colors -S $suffix $q_flag' \
              'attributes:attribute:__git_color_attributes -S $suffix $q_flag'
          fi
          ;;
      esac
      ;;
    ((#i)diff.renameLimit)
      _guard "[[:digit:]]#" number
      ;;
    ((#i)diff.renames)
      declare -a settings

      settings=(
        {true,yes}':enable basic rename detection'
        {false,no}":don't try to detect renames"
        {copies,copy}':detect file renames and copies')

      _describe -t values 'rename-detection setting' settings
      ;;
    ((#i)(fetch|receive|transfer).unpackLimit)
      _guard "[[:digit:]]#" 'maximum number of objects to unpack'
      ;;
    ((#i)format.headers)
      _message 'email header'
      ;;
    ((#i)format.suffix)
      _message 'filename suffix'
      ;;
    ((#i)gc.packrefs)
      declare -a values

      values=(
        {true,yes}':pack references when collecting garbage'
        {false,no}':leave references alone when collecting garbage'
        'notbare:pack references if the repository has a working directory')

      _describe -t values 'value' values
      ;;
    ((#i)gc.(reflogexpire(unreachable|)|rerere(un|)resolved))
      # TODO: It would be nice if the default value was shown under a separate
      # description/tag.
      __git_datetimes
      ;;
    ((#i)gitcvs.(*.|)enabled)
      declare -a booleans

      booleans=(
        {true,yes}':enable the cvs server interface'
        {false,no}":don't enable the cvs server interface")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)gitcvs.(*.|)logfile)
      _files
      ;;
    ((#i)gitcvs.(*.|)allbinary)
      declare -a booleans

      booleans=(
        {true,yes}':tell the client to treat all files as binary'
        {false,no}':treat files normally')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)gitcvs.dbname)
      # TODO: In the future, when computers are self-aware and this won’t
      # really matter anymore, one could inspect what gitcvs.dbdriver is set to
      # and complete possible databases for that DBI driver.
      _message -e 'database name'
      ;;
    ((#i)gitcvs.dbdriver)
      declare -a drivers

      # TODO: Would be nice to only include those that are installed, but I
      # couldn’t figure out a good way of doing that when I wrote this code.
      drivers=(
        'SQLite:use the SQLite database driver (default)'
        'Pg:use the Pg database driver')

      _describe -t dbi-drivers 'DBI driver' drivers
      ;;
    ((#i)gitcvs.dbuser)
      local expl

      _description users expl 'database user'
      _users $expl
      ;;
    ((#i)gitcvs.dbpass)
      _message -e 'database password'
      ;;
    ((#i)http.sslVerify)
      declare -a booleans

      booleans=(
        {true,yes}':verify SSL certificates when fetching or pushing over HTTP'
        {false,no}':skip verification of SSL certificates')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)http.sslCert)
      local expl

      _wanted files expl 'SSL certificate file' _files
      ;;
    ((#i)http.sslKey)
      local expl

      _wanted files expl 'SSL private-key file' _files
      ;;
    ((#i)http.sslCAInfo)
      local expl

      _wanted files expl 'certificates file' _files
      ;;
    ((#i)http.sslCAPath)
      local expl

      _wanted files expl 'CA certificates file' _files
      ;;
    ((#i)http.maxRequests)
      _guard "[[:digit:]]#" 'maximum number of requests'
      ;;
    ((#i)http.lowSpeedLimit)
      # TODO: Need a better description
      _guard "[[:digit:]]#([kmg]|)" number
      ;;
    ((#i)http.lowSpeedTime)
      _guard "[[:digit:]]#" seconds
      ;;
    ((#i)http.noEPSV)
      declare -a booleans

      booleans=(
        {true,yes}":don't use EPSV mode over FTP (for stupid servers)"
        {false,no}':use EPSV mode over FTP')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)i18n.(commitEncoding|logOutputEncoding))
      __git_encodings
      ;;
    ((#i)log.showroot)
      declare -a booleans

      booleans=(
        {true,yes}':show initial commit as a diff against an empty tree'
        {false,no}':hide initial commit')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)merge.summary)
      declare -a booleans

      # TODO: Use (default) in more descriptions.
      booleans=(
        {true,yes}':include summaries in merge commit messages'
        {false,no}":don't add summaries to merge commit messages (default)")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)merge.tool)
      declare -a tools

      tools=(kdiff3 tkdiff meld xxdiff emerge vimdiff)

      _describe -t merge-tools 'merge tool' tools
      ;;
    ((#i)merge.verbosity)
      declare -a levels

      levels=(
        '0:only final error message if conflicts were detected'
        '1:conflicts'
        '2:conflicts and file changes'
        '5:debugging information')

      _describe -t verbosity-levels 'verbosity level' levels
      ;;
    ((#i)pack.window)
      _guard '[[:digit:]]#' 'window size'
      ;;
    ((#i)pull.(octopus|twohead))
      __git_merge_strategies
      ;;
    ((#i)remote.*.url)
      _urls
      ;;
    ((#i)remote.*.fetch)
      : TODO
      ;;
    ((#i)remote.*.push)
      : TODO
      ;;
    ((#i)remote.*.skipDefaultUpdate)
      declare -a booleans

      booleans=(
        {true,yes}':skip this remote by default'
        {false,no}':update this remote by default')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)remote.*.(receivepack|uploadpack))
      # TODO: Perhaps actually use SSH here?
      local expl

      _wanted files expl "remote git-${${1##*.}%pack}-pack program" _files -g *(*)
      ;;
    ((#i)remote.*.tagopt)
      declare -a opts

      opts=(
        "--no-tags:don't fetch tags automatically"
        '"":fetch tags as usual')

      _describe -t tag-options 'tag retrieval' opts
      ;;
    ((#i)remotes.*)
      compset -P '* '

      local suffix
      if [[ $words[CURRENT] == [\"\']* ]]; then
        suffix=' '
      else
        suffix='\ '
      fi

      # TODO: Should really only complete unique remotes, that is, not the same
      # remote more than once in the list.
      __git_remotes -S $suffix -q
      ;;
    ((#i)repack.usedeltabaseoffset)
      declare -a booleans

      booleas=(
        {true,yes}':allow creation of delta-base-offset packs'
        {false,no}":don't create delta-base-offset packs")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)show.difftree)
      # TODO: This should complete the options available to these two commands.
      _message 'default options to git-diff-tree and git-show'
      ;;
    ((#i)showbranch.default)
      __git_branch_names
      ;;
    ((#i)tar.umask)
      _alternative \
        'number: :_guard "[0-7]#" "numeric mode"' \
        "values:special value:((user:\"use user's current umask\"))"
      ;;
    ((#i)user.email)
      _email_addresses
      ;;
    ((#i)user.name)
      _users
      ;;
    ((#i)user.signingkey)
      __git_gpg_secret_keys
      ;;
    ((#i)whatchanged.difftree)
      # TODO: This should complete the options available to git-diff-tree.
      _message 'default options to git-diff-tree when invoking git-whatchanged'
      ;;
    ((#i)receive.denyNonFastForwards)
      declare -a booleans

      booleans=(
        {true,yes}":git-receive-pack will deny a ref update that isn't a fast forward"
        {false,no}":allow a ref update that isn't a fast forward")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)imap.folder)
      _mailboxes
      ;;
    ((#i)imap.tunnel)
      _message -e commands 'imap tunneling command'
      ;;
    ((#i)imap.host)
      _hosts
      ;;
    ((#i)imap.user)
      # TODO: If imap.host is set, complete users on that system?
      _users
      ;;
    ((#i)imap.pass)
      _message -e passwords 'imap password'
      ;;
    ((#i)imap.port)
      _ports
      ;;
    ((#i)instaweb.local)
      declare -a booleans

      booleans=(
        {true,yes}':bind the HTTP daemon to 127.0.0.1'
        {false,no}":don't bind the HTTP daemon to a specific address")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)instaweb.httpd)
      _message -e command-lines 'HTTP-daemon command-line'
      ;;
    ((#i)instaweb.port)
      _ports
      ;;
    ((#i)instaweb.browser)
      _message -e command-lines 'web-browser command-line'
      ;;
    ((#i)instaweb.modulepath)
      local expl

      _description directories expl 'module path'
      _directories $expl
      ;;
    ((#i)(svn.|svn-remote.*.)noMetaData)
      declare -a booleans

      booleans=(
        {true,yes}':disable git-svn-id: lines at end of commits'
        {false,no}':add git-svn-id: lines at end of commits')

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)(svn.|svn-remote.*.)(useSvmProps|useSvnsyncProps))
      declare -a booleans

      booleans=(
        {true,yes}':remap URLs and UUIDs for mirrors'
        {false,no}":don't remap URLs and UUIDs for mirrors")

      _describe -t booleans 'boolean' booleans
      ;;
    ((#i)svn.followparent)
      __git_boolean_settings true 'follow parent commit'
      ;;
    ((#i)svn.authorsfile)
      local expl

      _description files expl 'authors-conversion file'
      _files $expl
      ;;
    ((#i)svn.username)
      _users
      ;;
    ((#i)svn.configdir)
      _directories
      ;;
    ((#i)svn.noauthcache)
      # TODO: Update description once this gets documented.
      __git_boolean_settings false 'use auth cache'
      ;;
    ((#i)svn.quiet)
      __git_boolean_settings false 'make git-svn less verbose' 'let git-svn produce verbose output'
      ;;
    ((#i)svn.repack)
      _guard '[[:digit:]]#' 'revision limit'
      ;;
    ((#i)svn.repackflags)
      # TODO: Should complete git-repack arguments
      _message -e 'git-repack flags'
      ;;
    ((#i)svn.logwindowsize)
      # TODO: Update description once this gets documented.
      _guard '[[:digit:]]#' 'log-window size'
      ;;
    ((#i)svn.shared)
      __git_repository_permissions
      ;;
    ((#i)svn.template)
      # NOTE: This is of course ridiculous, as this can never be useful.  Only
      # here for completeness.
      _directories
      ;;
    ((#i)svn.(trunk|tags|branches))
      _alternative \
        'sub-directories:sub-directory:_directories' \
        'urls: :_urls' && ret=0
      ;;
    ((#i)svn.prefix)
      _message -e 'prefix'
      ;;
    ((#i)svn.rmdir)
      __git_boolean_settings false 'remove empty directories from SVN tree after commit' 'leave empty directories from SVN tree after commit'
      ;;
    ((#i)svn.edit)
      __git_boolean_settings false 'edit commit message before committing' 'use commit message from SVN'
      ;;
    ((#i)svn.findcopiesharder)
      __git_boolean_settings false 'try harder to find copies' 'use simple copy-finding algorithm'
      ;;
    ((#i)svn.l)
      _guard "[[:digit:]]#" number
      ;;
    ((#i)svn.copysimilarity)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.revision)
      __git_svn_revisions
      ;;
    ((#i)svn.merge)
      __git_boolean_settings false 'use merging strategies' "don't try to merge"
      ;;
    ((#i)svn.fetch-all)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.stdin)
      __git_boolean_settings false 'read list of commits to commit from stdin' "don't necessarily read list of commits to commit from stdin"
      ;;
    ((#i)svn.strategy)
      __git_merge_strategies
      ;;
    ((#i)svn.verbose)
      __git_boolean_settings false 'output extra information'
      ;;
    ((#i)svn.dryrun)
      __git_boolean_settings false 'output git-commands that would show diffs that would be committed' 'actually run the git commands'
      ;;
    ((#i)svn.minimize)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.limit)
      _guard "[[:digit:]]#" limit
      ;;
    ((#i)svn.incremental)
      __git_boolean_settings false 'give output suitable for concatenation'
      ;;
    ((#i)svn.showcommit)
      __git_boolean_settings false 'output git commit SHA-1, as well' "don't output git commit SHA-1"
      ;;
    ((#i)svn.online)
      __git_boolean_settings false 'produce output similar to --pretty=oneline'
      ;;
    ((#i)svn.color)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.pager)
      _message -e 'undocumented'
      ;;
    ((#i)svn.nonrecursive)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.local)
      __git_boolean_settings false 'undocumented'
      ;;
    ((#i)svn.message)
      _message -e 'undocumented'
      ;;
    ((#i)svn.file)
      _message -e 'undocumented'
      ;;
    ((#i)svn-remote.*.rewriteRoot)
      _message -e 'new root'
      ;;
    (*)
      _message 'value'
      ;;
  esac
}

# __git_boolean_settings [-t TAG] [-l LABEL] DEFAULT 'follow parent commit' ['follow HEAD commit']
#
# -t can be used to specify a tag to use (default: booleans).
# -l can be used to specify a label to use (default: 'boolean').
# 
# The first argument is the default value, so that the description of the
# default value can be suffixed with " (default)".  The second argument
# is the description for the true value.  If a third argument is given,
# it is used as the description for the false value.  If it is not given,
# the description will be the true value's description with the prefix
# "don't ".
(( $+functions[__git_boolean_settings] )) ||
__git_boolean_settings () {
  local tag label garbage 

  zparseopts -D -E -a garba S: M: J: V: 1 2 n F: X: -t=tag -l=label

  declare -A descriptions

  descriptions=(true $2 false "don't $2")

  if (( $# > 2 )); then
    descriptions[false]=$3
  fi

  descriptions[$1]+=" (default)"

  declare -a booleans

  booleans=(
    {true,yes}':'$descriptions[true]
    {false,no}':'$descriptions[false])

  _describe -t ${tag:-booleans} ${label:-boolean} booleans
}

# TODO: Use this function in other places.
(( $+functions[__git_colors] )) ||
__git_colors () {
  declare -a colors

  colors=(black red green yellow blue magenta cyan white)

  _describe -t colors 'color' colors $*
}

# TODO: Use this function in other places.
(( $+functions[__git_color_attributes] )) ||
__git_color_attributes () {
  declare -a attributes

  attributes=(bold dim ul blink reverse)

  _describe -t attributes 'attribute' attributes $*
}

(( $+functions[__git_config_section_names] )) ||
__git_config_section_names () {
  # TODO: Come up with a good way of extracting this information.
  _guard "?#" "section name"
}

(( $+functions[__git_archive_formats] )) ||
__git_archive_formats () {
  local expl
  declare -a formats

  formats=(${${(f)"$(_call_program archive-formats git archive --list)"}})
  __git_command_successful || return

  _wanted archive-formats expl 'archive format' compadd $formats
}

(( $+functions[__git_gpg_secret_keys] )) ||
__git_gpg_secret_keys () {
  local expl

  _wanted secret-keys expl 'secret key' compadd \
    ${${(Mo)$(_call_program secret-keys gpg --list-secret-keys 2>/dev/null):%<*>}//(<|>)/}
}

(( $+functions[__git_merge_strategies] )) ||
__git_merge_strategies () {
  declare -a merge_strategies_cache

  merge_strategies_cache=(${${=${${(M)${(f)"$(<$(git --exec-path)/git-merge)"}:#all_strategies*}##all_strategies=\'}%%\'}:#recur})

  local expl
  _wanted merge-strategies expl 'merge strategy' compadd - $merge_strategies_cache
}

# TODO: Use this in more places.
(( $+functions[__git_datetimes] )) ||
__git_datetimes () {
  _guard "*" 'time specification'
}

# TODO: Use this in more places.
# TODO: Use better algorithm, as shown in iconv completer (separate it to a new
# Type).
(( $+functions[__git_encodings] )) ||
__git_encodings () {
  local expl
  _wanted encodings expl 'encoding' compadd "$@" \
    -M 'm:{a-zA-Z}={A-Za-z} r:|-=* r:|=*' \
    ${${${(f)"$(_call_program encodings iconv --list)"}## #}%//}
}

(( $+functions[__git_repository_permissions] )) ||
__git_repository_permissions () {
  declare -a permissions

  permissions=(
    {group,true,yes}':files and objects are group-writable'
    {all,world,everybody}':files and objects are readable by all users and group-shareable'
    {umask,false}':use permissions reported by umask()')

  _describe -t permissions 'permission' permissions
}

(( $+functions[__git_apply_whitespace_strategies] )) ||
__git_apply_whitespace_strategies () {
  declare -a strategies

  strategies=(
    'nowarn:turn off the trailing-whitespace warning'
    'warn:output trailing-whitespace warning, but apply patch'
    'error:output trailing-whitespace warning and refuse to apply patch'
    'error-all:same as "error", but output warnings for all files'
    'strip:output trailing-whitespace warning and strip trailing whitespace')

  _describe -t strategies 'trailing-whitespace resolution strategy' strategies
}

(( $+functions[__git_svn_revisions] )) ||
__git_svn_revisions () {
  if [[ -prefix *: ]]; then
    compset -P '*:'

    _alternative \
      'revision-numbers: :__git_svn_revision_numbers' \
      'symbolic-revisions:symbolic revision:((HEAD\:"the topmost revision of the SVN repository"))'
  else
    _alternative \
      'revision-numbers: :__git_svn_revision_numbers' \
      'symbolic-revisions:symbolic revision:__git_svn_base_revisions'
  fi
}

(( $+functions[__git_svn_revision_numbers] )) ||
__git_svn_revision_numbers () {
  _guard "[[:digit:]]#" "revision number"
}

(( $+functions[__git_svn_base_revisions] )) ||
__git_svn_base_revisions () {
  declare -a revisions

  revisions=(
    'BASE:the bottommost revision of the SVN repository')

  # TODO: How do we deal with $*?
  _describe -t symbolic-revisions 'symbolic revision' revisions -S ':' -r ': '
}

# TODO: numparent is undocumented.
(( $+functions[__git_ref_sort_keys] )) ||
__git_ref_sort_keys () {
  compset -P '-'

  local -a keys

  keys=(
    'refname:the name of the ref'
    'objecttype:the type of the object'
    'objectsize:the size of the object'
    'objectname:the object name (SHA-1)'
    'tree:the tree header-field'
    'parent:the parent header-field'
    'numparent:undocumented'
    'object:the object header-field'
    'type:the type header-field'
    'tag:the tag header-field'
    'author:the author header-field'
    'authorname:the name component of the author header-field'
    'authoremail:the email component of the author header-field'
    'authordate:the date component of the author header-field'
    'committername:the name component of the committer header-field'
    'committeremail:the email component of the committer header-field'
    'committerdate:the date component of the committer header-field'
    'taggername:the name component of the tagger header-field'
    'taggeremail:the email component of the tagger header-field'
    'taggerdate:the date component of the tagger header-field'
    'creatorname:the name component of the creator header-field'
    'creatordate:the date component of the creator header-field'
    'subject:the subject of the message'
    'body:the body of the message'
    'body:the contents of the message (subject and body)')

  _describe -t sort-keys 'sort key' keys
}

(( $+functions[__git_daemon_service] )) ||
__git_daemon_service () {
  local -a services

  services=(
    'upload-pack:serve git-fetch-pack and git-peek-remote clients'
    'upload-archive:serve git-archive --remote clients')

  _describe -t services 'service' services
}

(( $+functions[__git_attributes] )) ||
__git_attributes () {
  local -a attributes

  attributes=(
    'crlf:line-ending convention'
    'ident:ident substitution'
    'filter:filters'
    'diff:textual diff'
    'merge:merging strategy')

  _describe -t attributes 'attribute' attributes
}

# ---

# TODO: How do we do -/n/ here?
# --reflog undocumented
# -m undocumented
# -v undocumented
# --root undocumented
# --no-commit-id undocumented
# --always undocumented
# --abbrev undocumented
# --abbrev-commit undocumented
# --full-diff undocumented
# --full-history undocumented
# --all-match undocumented
# optional argument to --unpacked undocumented
(( $+functions[__git_setup_revision_arguments] )) ||
__git_setup_revision_arguments () {
  revision_arguments=(
    '(-n --max-count -)'{-n+,--max-count=-}'[maximum number of commits to output]: :_guard "[[\:digit\:]]#" number'
    '--skip=-[skip given number of commits before output]: :_guard "[[\:digit\:]]#" number'
    '(          --since --after)--max-age=-[maximum age of commits to output]: :_guard "[[\:digit\:]]#" timestamp'
    '(--max-age --since --after)'{--since=-,--after=-}'[show commits more recent than given date]:date'
    '(          --until --before)--min-age[minimum age of commits to output]: :_guard "[[\:digit\:]]#" timestamp'
    '(--min-age --until --before)'{--until=-,--before=-}'[show commits older than given date]: :_guard "[[\:digit\:]]#" timestamp'
    '--all[show all commits from refs]'
    '--cherry-pick[omit any same-change commits]'
    '--reflog[show all commits from reflogs]'
    '(-g --walk-reflogs)'{-g,--walk-reflogs}'[walk reflog entries from most recent to oldest]'
    '*--not[reverses meaning of ^ prefix for revisions that follow]'
    '--default[use argument as default revision]:default revision:__git_revisions'
    '--merge[after a failed merge, show refs that touch files having a conflict]'
    '(             --date-order)--topo-order[show commits in topological order]'
    '(--topo-order             )--date-order[show commits in date order]'
    '--parents[show parent commits]'
    '(        --sparse)--dense[this is the inverse of --sparse, and is also the default]'
    '(--dense         )--sparse[when paths are given, output only commits that changes any of them]'
    '--remove-empty[stop when a given path disappears from the tree]'
    '--no-merges[do not print commits with more than one parent]'
    '--boundary[output uninteresting commits at the boundary]'
    '--left-right[mark which side of a symmetric diff a commit is reachable from]'
    '(          --objects-edge)--objects[show object ids of objects referenced by the listed commits]'
    '(--objects               )--objects-edge[show object ids of objects referenced by the listed and excluded commits]'
    '(   -t)-r[show recursive diffs]'
    '(-r   )-t[show the tree objects in the diff output]'
    '-m[do not ignore merges]'
    '(   --cc --full-diff)-c[show merge diffs from parents simultaneously]'
    '(-c      --full-diff)--cc[show merge diffs from parents simultaneously without one-parent diffs]'
    '(-c --cc            )--full-diff[undocumented]'
    '(   --pretty --header)-v[show verbose header]'
    '(-v          --header)'$pretty_arg
    '--root[show root diff]'
    '--no-commit-id[do not show commit ids]'
    '--always[always show header]'
    $abbrev_arg
    '--abbrev-commit[undocumented]'
    '--full-history[undocumented]'
    '--relative-date[show dates relative to the current time]'
    "--date=-[format of date output]:date format:((relative\:'show dates relative to the current time'
                                                   local\:\"show timestamps in user's local timezone\"
                                                   default\:'show timestamp in the original timezone\""
    '--author=-[limit commits to those by the given author]:author'
    '--committer=-[limit commits to those by the given committer]:committer'
    '--grep=-[limit commits to those with log messages matching the given pattern]:pattern'
    '--all-match[undocumented]'
    '--encoding=-[output log messages in given encoding]::encoding:__git_encodings'
    $diff_args)

  if (( words[(I)--objects(|-edge)] )); then
    revision_arguments+=('--unpacked=-[print object IDs that are not in packs]::object')
  fi
}

# ---

(( $+functions[__git_is_indexed] )) ||
__git_is_indexed () {
  [[ -n $(git ls-files $REPLY) ]]
}

  local curcontext=$curcontext ret=1

  if [[ $words[1] == git ]]; then
    local state line
    declare -A opt_args
    _arguments -C \
      '(- :)--version[display version information]' \
      '(- :)--help[display help message]' \
      '--exec-path=-[path containing core git-programs]::directory:_directories' \
      '(-p --paginate)'{-p,--paginate}'[pipe output into $PAGER]' \
      '--git-dir=-[path to repository]:directory:_directories' \
      '--bare[use $PWD as repository]' \
      ':command:->command' \
      '*::options:->options' && ret=0
    case $state in
      (command)
        __git_aliases_and_commands
        ;;
      (options)
        curcontext="${curcontext%:*:*}:git-$words[1]:"
        _call_function ret _git-$words[1]
        ;;
    esac
  else
    _call_function ret _$words[1]
  fi
}

_git