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#compdef bash

local ret=1
local -a context line state state_descr args tmp cmd
local -A opt_args val_args

cmd=( $words[1] --noprofile --norc )

args=(
  # Long options must appear before short options (take care — some of these are
  # duplicated in the s group below!)
  + l
  '!--debug'
  '--debugger[enable extended debugging mode]'
  '(-D --dump-po-strings --dump-strings)--dump-po-strings[like -D, but display in gettext PO format]'
  '(-D --dump-po-strings --dump-strings)--dump-strings[display strings subject to language translation]'
  '(: -)--help[display help information]'
  # The usual = is deliberately omitted here
  '(--init-file --rcfile)'{--init-file,--rcfile}'[load specified file instead of ~/.bashrc]: :_files'
  '(-l --login)--login[act as login shell]'
  '--noediting[disable readline editing]'
  '--noprofile[do not load /etc/profile, ~/.bash_profile, etc.]'
  '--norc[do not load ~/.bashrc]'
  '--posix[enable POSIX mode]'
  '(-r --restricted)--restricted[act as restricted shell]'
  '(: -)--version[display version information]'
  # This is ugly, but this way the + variants have accurate descriptions. Note
  # that bash does accept + variants of -i, -l, -s, etc., but they don't seem to
  # actually do anything, so we don't bother with them
  + s
  '(l)'{'-a[','+a[do not '}'mark all functions and variables for export]'
  '(l)'{'-B[','+B[do not '}'enable brace expansion]'
  '(l)'{'-b[','+b[do not '}'report status of terminated background jobs immediately]'
  '(l)'{'-C[','+C[do not '}'prevent output redirection from overwriting existing files]'
  '(l 1 -)-c[execute specified command string]:command string:_cmdstring:argv[0]:'
  '(l)-D[display strings subject to language translation]'
  '(l)'{'-E[','+E[do not '}'make functions and subshells inherit ERR traps]'
  '(l)'{'-e[','+e[do not '}'exit immediately on non-zero return]'
  '(l)'{'-f[','+f[do not '}'disable file globbing]'
  '(l)'{'-H[','+H[do not '}'enable history substitution]'
  '(l)'{'-h[','+h[do not '}'hash commands]'
  '(l)-i[act as interactive shell]'
  '(l)'{'-k[','+k[do not '}'act on variable assignments in command arguments]'
  '(l)-l[act as login shell]'
  '(l)'{'-m[','+m[do not '}'enable job control]'
  '(l)'{'-n[','+n[do not '}'read (syntax-check) commands only]'
  '(l)*'{'-O[','+O[un'}'set specified `shopt` option]: :->shopt-options'
  '(l)*'{'-o[','+o[un'}'set specified `set` option]: :->set-options'
  '(l)'{'-P[','+P[do not '}'resolve cd paths]'
  '(l)'{'-p[','+p[do not '}'enable privileged mode]'
  '(l)-r[act as restricted shell]'
  '(l 1 -c)-s[read commands from standard input]'
  '(l)'{'-T[','+T[do not '}'make functions and subshells inherit DEBUG and RETURN traps]'
  '(l)'{'-t[','+t[do not '}'exit after executing one command]'
  '(l)'{'-u[','+u[do not '}'treat unset variables as an error during parameter expansion]'
  '(l)'{'-v[','+v[do not '}'print shell input lines as they are read]'
  '(l)'{'-x[','+x[do not '}'print command trace]'
  + o
  '(-)1:script file:_files'
  '(-)*:: :->args'
)

_arguments -s -S -A '-*' : $args && ret=0

case $state in
  args)
    if [[ -n ${opt_args[(i)s--[cs]]} ]]; then
      _files && ret=0
    else
      _normal && ret=0
    fi
    ;;
  set-options)
    tmp=( ${(f)"$( _call_program set-options $cmd -c '"shopt -o"' )"} )
    tmp=( ${tmp%%[[:space:]]*} )
    _values -w '`set` option' $tmp && ret=0
    ;;
  shopt-options)
    tmp=( ${(f)"$( _call_program shopt-options $cmd -c shopt )"} )
    tmp=( ${tmp%%[[:space:]]*} )
    _values -w '`shopt` option' $tmp && ret=0
    ;;
esac

return ret