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32396: _git: fix __git_committish_range_{first,last} and __git_is_committish_range

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- Ranges with 3 dots would always fail, because the non-greedy
  expansion  %..(.|)* in __git_committish_range_first would only
  remove '..' and never three dots. 'a...b' would end up in 'a.'.
  Use ${${1%..*}%.} instead.
- Use a similar approach for __git_committish_range_last.
- Wrap them in another expansion to replace empty results with 'HEAD'.
  Git man-page states omitted range ending are being replaced with
  HEAD. This rule has to be followed to make completions like
  'git log foo.. -- <tab>' work properly.
- Add an additional check to make sure none of the extracted first/last
  parts contain additional '..' in invalied ranges such as 'a..b..c'.
  This gets rid of the 'TODO:' and ideally saves a few unneded
  calls to git rev-parse.
This commit is contained in:
m0viefreak 2014-02-17 05:00:36 +01:00 • committed by Frank Terbeck
parent 76ab661df3
commit 946a99a0b3
2 changed files with 13 additions and 8 deletions
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16
Completion/Unix/Command/_git
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@ -4798,12 +4798,12 @@ __git_command_successful () {
(( $+functions[__git_committish_range_first] )) ||
__git_committish_range_first () {
print -r -- ${1%..(.|)*}
print -r -- ${${${1%..*}%.}:-HEAD}
}
(( $+functions[__git_committish_range_last] )) ||
__git_committish_range_last () {
print -r -- ${1##*..(.|)}
print -r -- ${${${1#*..}#.}:-HEAD}
}
(( $+functions[__git_pattern_escape] )) ||
@ -4832,12 +4832,12 @@ __git_is_treeish () {
(( $+functions[__git_is_committish_range] )) ||
__git_is_committish_range () {
# TODO: This isn't quite right. We would like to do parts=${(~s:..(.|))},
# but that doesn't work. (This would allow us to make sure that parts only
# contains two elements and then apply __git_is_committish on them.
[[ $1 == *..(.|)* ]] &&
__git_is_committish $(__git_committish_range_first $1) &&
__git_is_committish $(__git_committish_range_last $1)
[[ $1 == *..(.|)* ]] || return 1
local first=$(__git_committish_range_first $1)
local last=$(__git_committish_range_last $1)
[[ $first != *..* && $last != *..* ]] && \
__git_is_committish $first && \
__git_is_committish $last
}
(( $+functions[__git_is_initial_commit] )) ||