diff options
author | Jonathan Nieder <jrnieder@gmail.com> | 2010-12-15 07:57:58 +0300 |
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committer | Jonathan Nieder <jrnieder@gmail.com> | 2010-12-15 08:55:55 +0300 |
commit | dbda3b10902e13826862505900eb7a537505a492 (patch) | |
tree | 1c16ade7d7ab7c9982cd29ce8147521e222854fe /contrib | |
parent | da48616f1df51ff43acc64cdf8966f7b72142a11 (diff) |
bash: simple reimplementation of _get_comp_words_by_ref
Add a minimal implementation of _get_comp_words_by_ref so
$ git show head:g <tab><tab>
on bash 4 can complete paths within the head commit without requiring
the bash_completion functions to be loaded. This is a follow-up to
the previous patch (bash: get --pretty=m<tab> completion to work with
bash v4).
Based on bash-completion 2.x (commit bf763033, 2010-10-26) but tweaked
for simplicity and to allow zsh to parse the code.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Improved-by: SZEDER Gábor <szeder@ira.uka.de>
Diffstat (limited to 'contrib')
-rwxr-xr-x | contrib/completion/git-completion.bash | 118 |
1 files changed, 110 insertions, 8 deletions
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 68b68d0c78..1747091287 100755 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -321,26 +321,128 @@ __gitcomp_1 () done } +# The following function is based on code from: +# +# bash_completion - programmable completion functions for bash 3.2+ +# +# Copyright © 2006-2008, Ian Macdonald <ian@caliban.org> +# © 2009-2010, Bash Completion Maintainers +# <bash-completion-devel@lists.alioth.debian.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# The latest version of this software can be obtained here: +# +# http://bash-completion.alioth.debian.org/ +# +# RELEASE: 2.x + +# This function can be used to access a tokenized list of words +# on the command line: +# +# __git_reassemble_comp_words_by_ref '=:' +# if test "${words_[cword_-1]}" = -w +# then +# ... +# fi +# +# The argument should be a collection of characters from the list of +# word completion separators (COMP_WORDBREAKS) to treat as ordinary +# characters. +# +# This is roughly equivalent to going back in time and setting +# COMP_WORDBREAKS to exclude those characters. The intent is to +# make option types like --date=<type> and <rev>:<path> easy to +# recognize by treating each shell word as a single token. +# +# It is best not to set COMP_WORDBREAKS directly because the value is +# shared with other completion scripts. By the time the completion +# function gets called, COMP_WORDS has already been populated so local +# changes to COMP_WORDBREAKS have no effect. +# +# Output: words_, cword_, cur_. + +__git_reassemble_comp_words_by_ref() +{ + local exclude i j first + # Which word separators to exclude? + exclude="${1//[^$COMP_WORDBREAKS]}" + cword_=$COMP_CWORD + if [ -z "$exclude" ]; then + words_=("${COMP_WORDS[@]}") + return + fi + # List of word completion separators has shrunk; + # re-assemble words to complete. + for ((i=0, j=0; i < ${#COMP_WORDS[@]}; i++, j++)); do + # Append each nonempty word consisting of just + # word separator characters to the current word. + first=t + while + [ $i -gt 0 ] && + [ -n "${COMP_WORDS[$i]}" ] && + # word consists of excluded word separators + [ "${COMP_WORDS[$i]//[^$exclude]}" = "${COMP_WORDS[$i]}" ] + do + # Attach to the previous token, + # unless the previous token is the command name. + if [ $j -ge 2 ] && [ -n "$first" ]; then + ((j--)) + fi + first= + words_[$j]=${words_[j]}${COMP_WORDS[i]} + if [ $i = $COMP_CWORD ]; then + cword_=$j + fi + if (($i < ${#COMP_WORDS[@]} - 1)); then + ((i++)) + else + # Done. + return + fi + done + words_[$j]=${words_[j]}${COMP_WORDS[i]} + if [ $i = $COMP_CWORD ]; then + cword_=$j + fi + done +} + if ! type _get_comp_words_by_ref >/dev/null 2>&1; then _get_comp_words_by_ref () { + local exclude cur_ words_ cword_ + if [ "$1" = "-n" ]; then + exclude=$2 + shift 2 + fi + __git_reassemble_comp_words_by_ref "$exclude" + cur_=${words_[cword_]} while [ $# -gt 0 ]; do case "$1" in cur) - cur=${COMP_WORDS[COMP_CWORD]} + cur=$cur_ ;; prev) - prev=${COMP_WORDS[COMP_CWORD-1]} + prev=${words_[$cword_-1]} ;; words) - words=("${COMP_WORDS[@]}") + words=("${words_[@]}") ;; cword) - cword=$COMP_CWORD - ;; - -n) - # assume COMP_WORDBREAKS is already set sanely - shift + cword=$cword_ ;; esac shift |