Updated from list as far as 10376

2 files changed, 209 insertions, 97 deletions

diff --git a/Functions/Zle/incremental-complete-word b/Functions/Zle/incremental-complete-word
index 2a9c1aff2..e021bf6f7 100644
--- a/Functions/Zle/incremental-complete-word
+++ b/Functions/Zle/incremental-complete-word
@@ -1,89 +1,124 @@
-# incremental-complete-word() {
-
 # Autoload this function, run `zle -N <func-name>' and bind <func-name>
 # to a key.
 
+
 # This allows incremental completion of a word.  After starting this
-# command, a list of completion choices is shown after every character you
-# type, which you can delete with ^h or DEL.  RET will accept the
-# completion so far.  You can hit TAB to do normal completion and ^g to
-# abort back to the state when you started.
+# command, a list of completion choices can be shown after every character
+# you type, which you can delete with ^h or DEL.  RET will accept the
+# completion so far.  You can hit TAB to do normal completion, ^g to
+# abort back to the state when you started, and ^d to list the matches.
 #
-# Completion keys:
-#   incremental_prompt   Prompt to show in status line during icompletion;
-#                        the sequence `%u' is replaced by the unambiguous
-#                        part of all matches if there is any and it is
-#                        different from the word on the line
-# incremental_stop       Pattern matching keys which will cause icompletion
-#                         to stop and the key to be re-executed
-# incremental_break      Pattern matching keys which will cause icompletion
-#                         to stop and the key to be discarded
-# incremental_completer  Set of completers, like the `completer' key
-#   incremental_list     If set to a non-empty string, the matches will be
-#                        listed on every key-press
-
-emulate -L zsh
-unsetopt autolist menucomplete automenu # doesn't work well
-
-local key lbuf="$LBUFFER" rbuf="$RBUFFER" pmpt word lastl lastr wid twid
-
-[[ -n "$compconfig[incremental_completer]" ]] &&
-set ${(s.:.)compconfig[incremental_completer]}
-pmpt="${compconfig[incremental_prompt]-incremental completion...}"
-
-if [[ -n "$compconfig[incremental_list]" ]]; then
-  wid=list-choices
-else
-  wid=complete-word
-fi
-
-zle $wid "$@"
-LBUFFER="$lbuf"
-RBUFFER="$rbuf"
-if [[ "${LBUFFER}${RBUFFER}" = *${_lastcomp[unambiguous]}* ]]; then
-  word=''
-else
-  word="${_lastcomp[unambiguous]}"
-fi
-zle -R "${pmpt//\\%u/$word}"
-read -k key
-
-while [[ '#key' -ne '#\\r' && '#key' -ne '#\\n' &&
-         '#key' -ne '#\\C-g' ]]; do
-  twid=$wid
-  if [[ "$key" = ${~compconfig[incremental_stop]} ]]; then
-    zle -U "$key"
-    return
-  elif [[ "$key" = ${~compconfig[incremental_break]} ]]; then
-    return
-  elif [[ '#key' -eq '#\\C-h' || '#key' -eq '#\\C-?' ]]; then
-    [[ $#LBUFFER -gt $#l ]] && LBUFFER="$LBUFFER[1,-2]"
-  elif [[ '#key' -eq '#\\t' ]]; then
-    zle complete-word "$@"
-    lbuf="$LBUFFER"
-    rbuf="$RBUFFER"
-  elif [[ '#key' -eq '#\\C-d' ]]; then
-    twid=list-choices
+# This works only with the new function based completion system.
+
+# The main widget function.
+
+incremental-complete-word() {
+  #emulate -L zsh
+  unsetopt autolist menucomplete automenu # doesn't work well
+
+  local key lbuf="$LBUFFER" rbuf="$RBUFFER" pmpt pstr word
+  local lastl lastr wid twid num post toolong
+  local curcontext="${curcontext}" stop brk
+
+  [[ -z "$curcontext" ]] && curcontext=:::
+  curcontext="incremental:${curcontext#*:}"
+
+  zstyle -s ":completion:${curcontext}" prompt pmpt ||
+    pmpt='incremental (%c): %u%s  %l'
+  zstyle -s ":completion:${curcontext}" stop stop
+  zstyle -s ":completion:${curcontext}" break brk
+
+  if zstyle -t ":completion:${curcontext}" list; then
+    wid=list-choices
+    post=( icw-list-helper )
   else
-    LBUFFER="$LBUFFER$key"
+    wid=complete-word
+    post=()
   fi
-  lastl="$LBUFFER"
-  lastr="$RBUFFER"
-  zle $twid "$@"
-  LBUFFER="$lastl"
-  RBUFFER="$lastr"
-  if [[ "${LBUFFER}${RBUFFER}" = *${_lastcomp[unambiguous]}* ]]; then
+
+  comppostfuncs=( "$post[@]" )
+  zle $wid "$@"
+  LBUFFER="$lbuf"
+  RBUFFER="$rbuf"
+  num=$_lastcomp[nmatches]
+  if (( ! num )); then
+    word=''
+    state='-no match-'
+  elif [[ "${LBUFFER}${RBUFFER}" = *${_lastcomp[unambiguous]}* ]]; then
     word=''
+    state='-no prefix-'
   else
     word="${_lastcomp[unambiguous]}"
+    state=''
   fi
-  zle -R "${pmpt//\\%u/$word}"
+  zformat -f pstr "$pmpt" "u:${word}" "s:$state" "n:$num" \
+                          "l:$toolong" "c:${_lastcomp[completer][2,-1]}"
+  zle -R "$pstr"
   read -k key
-done
 
-if [[ '#key' -eq '#\\C-g' ]]; then
-  LBUFFER="$lbuf"
-  RBUFFER="$rbuf"
-fi
-zle -Rc
-# }
+  while [[ '#key' -ne '#\\r' && '#key' -ne '#\\n' &&
+           '#key' -ne '#\\C-g' ]]; do
+    twid=$wid
+    if [[ "$key" = ${~stop} ]]; then
+      zle -U "$key"
+      return
+    elif [[ "$key" = ${~brk} ]]; then
+      return
+    elif [[ '#key' -eq '#\\C-h' || '#key' -eq '#\\C-?' ]]; then
+      [[ $#LBUFFER -gt $#l ]] && LBUFFER="$LBUFFER[1,-2]"
+    elif [[ '#key' -eq '#\\t' ]]; then
+      zle complete-word "$@"
+      lbuf="$LBUFFER"
+      rbuf="$RBUFFER"
+    elif [[ '#key' -eq '#\\C-d' ]]; then
+      twid=list-choices
+    else
+      LBUFFER="$LBUFFER$key"
+    fi
+    lastl="$LBUFFER"
+    lastr="$RBUFFER"
+    [[ "$twid" = "$wid" ]] && comppostfuncs=( "$post[@]" )
+    toolong=''
+    zle $twid "$@"
+    LBUFFER="$lastl"
+    RBUFFER="$lastr"
+    num=$_lastcomp[nmatches]
+    if (( ! num )); then
+      word=''
+      state='-no match-'
+    elif [[ "${LBUFFER}${RBUFFER}" = *${_lastcomp[unambiguous]}* ]]; then
+      word=''
+      state='-no prefix-'
+    else
+      word="${_lastcomp[unambiguous]}"
+      state=''
+    fi
+    zformat -f pstr "$pmpt" "u:${word}" "s:$state" "n:$num" \
+                            "l:$toolong" "c:${_lastcomp[completer][2,-1]}"
+    zle -R "$pstr"
+    read -k key
+  done
+
+  if [[ '#key' -eq '#\\C-g' ]]; then
+    LBUFFER="$lbuf"
+    RBUFFER="$rbuf"
+  fi
+  zle -Rc
+}
+
+# Helper function used as a completion post-function used to make sure that
+# the list of matches in only shown if it fits on the screen.
+
+icw-list-helper() {
+
+  # +1 for the status line we will add...
+
+  if [[ compstate[list_lines]+BUFFERLINES+1 -gt LINES ]]; then
+    compstate[list]='list explanations'
+    [[ compstate[list_lines]+BUFFERLINES+1 -gt LINES ]] && compstate[list]=''
+
+    toolong='...'
+  fi
+}
+
+incremental-complete-word "$@"
diff --git a/Functions/Zle/predict-on b/Functions/Zle/predict-on
index 07ce0703a..bd7212050 100644
--- a/Functions/Zle/predict-on
+++ b/Functions/Zle/predict-on
@@ -1,64 +1,141 @@
 # This set of functions implements a sort of magic history searching.
 # After predict-on, typing characters causes the editor to look backward
-# in the history for the first line beginning with what you have typed
-# so far.  After predict-off, editing returns to normal for the line found.
+# in the history for the first line beginning with what you have typed so
+# far.  After predict-off, editing returns to normal for the line found.
 # In fact, you often don't even need to use predict-off, because if the
-# line doesn't match something in the history, adding a key at the end
-# behaves as normal --- though editing in the middle is liable to delete
+# line doesn't match something in the history, adding a key performs
+# standard completion --- though editing in the middle is liable to delete
 # the rest of the line.
 #
+# With the function based completion system (which is needed for this),
+# you should be able to type TAB at almost any point to advance the cursor
+# to the next "interesting" character position (usually the end of the
+# current word, but sometimes somewhere in the middle of the word).  And
+# of course as soon as the entire line is what you want, you can accept
+# with RETURN, without needing to move the cursor to the end first.
+#
 # To use it:
 #   autoload -U predict-on
 #   zle -N predict-on
 #   zle -N predict-off
 #   bindkey '...' predict-on
 #   bindkey '...' predict-off
-# Note that all the functions are defined when you first call type the
-# predict-on key, which means typing the predict-off key before that gives
-# a harmless error message.
+# Note that all functions are defined when you first type the predict-on
+# key, which means typing the predict-off key before that gives a harmless
+# error message.
 
 predict-on() {
-    zle -N self-insert insert-and-predict
-    zle -N magic-space insert-and-predict
-    zle -N backward-delete-char delete-backward-and-predict
+  zle -N self-insert insert-and-predict
+  zle -N magic-space insert-and-predict
+  zle -N backward-delete-char delete-backward-and-predict
+  zle -N delete-char-or-list delete-no-predict
 }
 predict-off() {
-    zle -A .self-insert self-insert
-    zle -A .magic-space magic-space
-    zle -A .backward-delete-char backward-delete-char
+  zle -A .self-insert self-insert
+  zle -A .magic-space magic-space
+  zle -A .backward-delete-char backward-delete-char
 }
 insert-and-predict () {
-  emulate -L zsh
-  if [[ ${RBUFFER[1]} = ${KEYS[-1]} ]]
+  setopt localoptions noshwordsplit noksharrays
+  if [[ $LBUFFER = *$'\012'* ]]
+  then
+    # Editing a multiline buffer, it's unlikely prediction is wanted
+    zle .$WIDGET "$@"
+    return
+  elif [[ ${RBUFFER[1]} = ${KEYS[-1]} ]]
   then
-    # same as what's typed, just move on
+    # Same as what's typed, just move on
     ((++CURSOR))
   else
     LBUFFER="$LBUFFER$KEYS"
     if [[ $LASTWIDGET == (self-insert|magic-space|backward-delete-char) ]]
     then
-      zle .history-beginning-search-backward || RBUFFER=""
+      if ! zle .history-beginning-search-backward
+      then
+	RBUFFER=""
+	if [[ ${KEYS[-1]} != ' ' ]]
+	then
+	  unsetopt automenu recexact
+	  integer curs=$CURSOR pos nchar=${#LBUFFER//[^${KEYS[-1]}]}
+	  local -a +h comppostfuncs
+	  local crs curcontext="${curcontext}"
+
+          [[ -z "$curcontext" ]] && curcontext=:::
+          curcontext="predict:${curcontext#*:}"
+
+	  comppostfuncs=( predict-limit-list )
+	  zle complete-word
+	  # Decide where to leave the cursor. The dummy loop is used to
+	  # get out of that `case'.
+	  repeat 1
+	  do
+	    zstyle -s ":completion:${curcontext}:" cursor crs
+	    case $crs in
+	    (complete)
+	      # At the place where the completion left it, if it is after
+	      # the character typed.
+	      [[ ${LBUFFER[-1]} = ${KEYS[-1]} ]] && break
+	      ;&
+	    (key)
+	      # Or maybe at the n'th occurrence of the character typed.
+	      pos=${BUFFER[(in:nchar:)${KEYS[-1]}]}
+	      if [[ pos -gt curs ]]
+	      then
+	        CURSOR=$pos
+	        break
+	      fi
+	      ;&
+	    (*)
+	      # Or else at the previous position.
+	      CURSOR=$curs
+	    esac
+	  done
+	fi
+      fi
     fi
   fi
   return 0
 }
 delete-backward-and-predict() {
-  emulate -L zsh
   if [[ -n "$LBUFFER" ]]
   then
+    setopt localoptions noshwordsplit noksharrays
+    if [[ $LBUFFER = *$'\012'* ]] then
+      # Editing a multiline buffer, it's unlikely prediction is wanted
+      zle .$WIDGET "$@"
     # If the last widget was e.g. a motion, then probably the intent is
     # to actually edit the line, not change the search prefix.
-    if [[ $LASTWIDGET == (self-insert|magic-space|backward-delete-char) ]]
+    elif [[ $LASTWIDGET == (self-insert|magic-space|backward-delete-char) ]]
     then
       ((--CURSOR))
       zle .history-beginning-search-forward || RBUFFER=""
       return 0
     else
-      # Depending on preference, you might call "predict-off" here,
-      # and also set up forward deletions to turn off prediction.
+      # Depending on preference, you might call "predict-off" here.
       LBUFFER="$LBUFFER[1,-2]"
     fi
   fi
 }
+delete-no-predict() {
+  [[ $WIDGET != delete-char-or-list || -n $RBUFFER ]] && predict-off
+  zle .$WIDGET "$@"
+}
+
+# This is a helper function for autocompletion to prevent long lists
+# of matches from forcing a "do you wish to see all ...?" prompt.
+
+predict-limit-list() {
+  if (( compstate[list_lines]+BUFFERLINES > LINES ||
+	( compstate[list_max] != 0 &&
+	    compstate[nmatches] > compstate[list_max] ) ))
+  then
+    compstate[list]=''
+  elif zstyle -t ":completion:predict::::" list always
+  then
+    compstate[list]='force list'
+  fi
+}
+
+# Handle zsh autoloading conventions
 
 [[ -o kshautoload ]] || predict-on "$@"