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# 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;
# modified to work with copy-earlier-word after zsh-users/5832.
#
# 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
# Handle the up to three arguments of .insert-last-word
if (( $+1 )); then
if (( $+3 )); then
((NUMERIC = -($1)))
else
((NUMERIC = _ilw_count - $1))
fi
(( NUMERIC )) || LBUFFER[lcursor+1,cursor+1]=''
numeric=$((-(${2:--numeric})))
fi
_ilw_hist=$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
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