From: Jonathan Nieder <jrnieder@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "SZEDER Gábor" <szeder@ira.uka.de>,
"Peter van der Does" <peter@avirtualhome.com>,
"Shawn O. Pearce" <spearce@spearce.org>,
git@vger.kernel.org, "Marc Branchaud" <marcnarc@xiplink.com>,
"Brian Gernhardt" <brian@gernhardtsoftware.com>,
"Kevin Ballard" <kevin@sb.org>,
"Mathias Lafeldt" <misfire@debugon.org>,
"Stephen Boyd" <bebarino@gmail.com>
Subject: [PATCH 2/3] bash: simple reimplementation of _get_comp_words_by_ref
Date: Wed, 15 Dec 2010 00:27:51 -0600 [thread overview]
Message-ID: <20101215062751.GC20492@burratino> (raw)
In-Reply-To: <20101215062403.GA20492@burratino>
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>
---
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 68b68d0..1747091 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
--
1.7.3.3.573.g0bcfc
next prev parent reply other threads:[~2010-12-15 6:28 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-01 20:49 [PATCH v4 0/2] *** SUBJECT HERE *** Peter van der Does
2010-12-01 20:49 ` [PATCH v4 1/2] Introduce functions from bash-completion project Peter van der Does
2010-12-01 20:49 ` [PATCH v4 2/2] Use the new functions to get the current cword Peter van der Does
2010-12-02 7:45 ` Jonathan Nieder
2010-12-02 22:36 ` SZEDER Gábor
2010-12-01 21:09 ` [PATCH v4 0/2] Make git-completion Bash 4 compatible Jonathan Nieder
2010-12-02 1:10 ` SZEDER Gábor
2010-12-02 9:16 ` Jonathan Nieder
2010-12-02 14:16 ` Peter van der Does
2010-12-02 21:02 ` [RFC/PATCH 2/1] bash: eliminate dependency on bash_completion lib Jonathan Nieder
2010-12-02 23:40 ` SZEDER Gábor
2010-12-03 0:07 ` Jonathan Nieder
2010-12-03 8:02 ` Stephen Boyd
2010-12-07 16:07 ` SZEDER Gábor
2010-12-07 19:49 ` Jonathan Nieder
2010-12-07 20:41 ` SZEDER Gábor
2010-12-07 20:59 ` Jonathan Nieder
2010-12-07 21:03 ` Junio C Hamano
2010-12-15 6:24 ` [PATCH v5.1 0/3] Make git-completion Bash 4 compatible Jonathan Nieder
2010-12-15 6:26 ` [PATCH 1/3] bash: get --pretty=m<tab> completion to work with bash v4 Jonathan Nieder
2010-12-15 6:27 ` Jonathan Nieder [this message]
2010-12-15 6:42 ` [MERGE PATCH 3/3] Merge branch 'master' (early part) into pd/bash-4-completion Jonathan Nieder
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