Add smart-insert-last-word.

ChangeLog

@@ -1,3 +1,9 @@
+2000-09-07  Bart Schaefer  <schaefer@zsh.org>
+
+	* 12773: Doc/Zsh/contrib.yo, Functions/Zle/smart-insert-last-word:
+	Add the smart-insert-last-word function from zsh-users/3272.
+	Change "completion style" to "widget style" in a few places.
+
 2000-09-07  Sven Wischnowsky  <wischnow@zsh.org>
 
 	* 12769: Completion/Builtins/_cd: more sensible value

Functions/Zle/smart-insert-last-word

@@ -0,0 +1,79 @@
+# smart-insert-last-word
+# Inspired by Christoph Lange <langec@gmx.de> from zsh-users/3265;
+# rewritten to correct multiple-call behavior after zsh-users/3270.
+#
+# This function as a ZLE widget can replace insert-last-word, like so:
+#
+#   zle -N insert-last-word smart-insert-last-word
+#
+# With a numeric prefix, behaves like insert-last-word, except that words
+# in comments are ignored when interactive_comments is set.
+#
+# Otherwise, the rightmost "interesting" word from the previous command is
+# found and inserted.  The default definition of "interesting" is that the
+# word contains at least one alphabetic character, slash, or backslash.
+# This definition can be overridden by use of a style like so:
+#
+#   zstyle :insert-last-word match '*[[:alpha:]/\\]*'
+#
+# For example, you might want to include words that contain spaces:
+#
+#   zstyle :insert-last-word match '*[[:alpha:][:space:]/\\]*'
+#
+# Or include numbers as long as the word is at least two characters long:
+#
+#   zstyle :insert-last-word match '*([[:digit:]]?|[[:alpha:]/\\])*'
+#
+# That causes redirections like "2>" to be included.
+#
+# Note also that the style is looked up based on the widget name, so you
+# can bind this function to different widgets to use different patterns:
+#
+#   zle -N insert-last-assignment smart-insert-last-word
+#   zstyle :insert-last-assignment match '[[:alpha:]][][[:alnum:]]#=*'
+#   bindkey '\e=' insert-last-assignment
+
+emulate -L zsh
+setopt extendedglob
+
+# Not strictly necessary:
+# (($+_ilw_hist)) || integer -g _ilw_hist _ilw_count _ilw_cursor _ilw_lcursor
+
+integer cursor=$CURSOR lcursor=$CURSOR
+local lastcmd pattern numeric=$NUMERIC
+
+# Save state for repeated calls
+if (( HISTNO == _ilw_hist && cursor == _ilw_cursor )); then
+    NUMERIC=$[_ilw_count+1]
+    lcursor=$_ilw_lcursor
+else
+    NUMERIC=1
+    _ilw_lcursor=$lcursor
+fi
+_ilw_hist=$HISTNO
+_ilw_count=$NUMERIC
+
+zle .up-history || return 1   # Retrieve previous command
+lastcmd=( ${(z)BUFFER} )      # Split into shell words
+zle .down-history             # Return to current command
+CURSOR=$cursor                # Restore cursor position
+NUMERIC=${numeric:-1}         # In case of fall through
+
+(( NUMERIC > $#lastcmd )) && return 1
+
+if [[ -z "$numeric" ]]
+then
+    integer i=1
+    zstyle -s :$WIDGET match pattern ||
+	pattern='*[[:alpha:]/\\]*'
+    while ((i <= $#lastcmd)); do
+	if [[ $lastcmd[-i] == $~pattern ]]; then
+	    NUMERIC=$i
+	    break
+	else
+	    ((++i))
+	fi
+    done
+fi
+LBUFFER[lcursor+1,cursor+1]=$lastcmd[-NUMERIC]
+_ilw_cursor=$CURSOR