mirror of
git://git.code.sf.net/p/zsh/code
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125 lines
3.4 KiB
Text
125 lines
3.4 KiB
Text
# Menu-driven alternative to history-beginning-search-backward.
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# As it uses a menu there is no sense of "forward" or "backward", however;
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# the entire history is searched.
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#
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# Configuration:
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# autoload -U history-beginning-search-menu
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# zle -N history-beginning-search-menu
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# bindkey '\eP' history-beginning-search-menu
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#
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# Example:
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# % /bin/su<ESC-P>
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# Enter digit:
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# 1 /bin/su -c 'make install' 4 /bin/su - perforce
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# 2 /bin/su 5 /bin/su -c
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# 3 /bin/su -c 'chown pws:pws **/*(u0)'
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#
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# Typing "1" expands the line to
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# % /bin/su -c 'make install'
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#
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# With a prefix argument, the search is not anchored to the beginning,
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# so for example "/su" could expand to "p4 files //depot/support/..."
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#
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# If this is bound to a widget containing "-end", e.g.
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# zle -N history-beginning-search-menu-end history-beginning-search-menu
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# then the cursor is put at the end of the line, else it is left
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# after the matched characters.
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#
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# If this is bound to a widget containing "-space", then any space in
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# the line so far is matched as a wildcard. (This means putting a space
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# at the start of the line is equivalent to specifying a prefix
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# argument.)
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emulate -L zsh
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setopt extendedglob
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zmodload -i zsh/parameter
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local -aU matches
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local -a display
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local search=$LBUFFER
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search=${search//(#m)[\][()\\*?#<>~^]/\\$MATCH}
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if [[ $WIDGET = *-space* ]]; then
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# We need to quote metacharacters in the search string
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# since they are otherwise active in the reverse subscript.
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# We need to avoid quoting other characters since they aren't
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# and just stay quoted, rather annoyingly.
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search=${search// /*}
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fi
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if (( ${+NUMERIC} )); then
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matches=(${(o)history[(R)*${search}*]})
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else
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matches=(${(o)history[(R)${search}*]})
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fi
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# Filter out any match that's the same as the original.
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# Note this isn't a pattern this time.
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matches=(${matches:#${LBUFFER}})
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integer n=${#matches}
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integer width=${#n}
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(( n == 0 )) && return 1
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# Hey, this works...
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integer i
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display=(${matches/(#m)*/${(l.$width..0.):-$((++i))} $MATCH})
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zle -R "Enter digit${${width##1}:+s}:" $display
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integer i
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local char chars
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# Hmmm... this isn't great. The only way of clearing the display
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# appears to be to overwrite it completely. I think that's because
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# displaying strings in this way doesn't set the completion list
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# properly.
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display=(${display//?/ })
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# Abort on first non-digit entry instead of requiring all
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# characters to be typed (as "read -k$width chars" would do).
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for (( i = 0; i < $width; i++ )); do
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read -k char
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if [[ $char != [[:digit:]] ]]; then
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zle -R '' $display
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return 1
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fi
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chars+=$char
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done
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if [[ $chars -eq 0 || $chars -gt $n ]]; then
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zle -R '' $display
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return 1
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fi
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integer newcursor
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if [[ $WIDGET != *-end* ]]; then
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if (( ${+NUMERIC} )); then
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# Advance cursor so that it's still after the string typed
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local -a match mbegin mend
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if [[ $matches[$chars] = (#b)(*${LBUFFER})* ]]; then
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newcursor=${#match[1]}
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fi
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else
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# Maintain cursor
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newcursor=$CURSOR
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fi
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fi
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# Find the history lines that contain the matched string and
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# go to the last one. This allows accept-line-and-down-history etc.
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# to work.
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local -a lines
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local matchq=${matches[$chars]//(#m)[\][()\\*?#<>~^]/\\$MATCH}
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lines=(${(kon)history[(R)$matchq]})
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HISTNO=$lines[-1]
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if (( newcursor )); then
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CURSOR=$newcursor
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elif [[ $WIDGET = *-end* ]]; then
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CURSOR=${#BUFFER}
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fi
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zle -R '' $display
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