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author | Nguyễn Thái Ngọc Duy <pclouds@gmail.com> | 2018-02-09 14:01:43 +0300 |
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committer | Junio C Hamano <gitster@pobox.com> | 2018-02-09 21:24:50 +0300 |
commit | d401f3debc5807092d68c95a89b363b65bbc8947 (patch) | |
tree | 707ecfa80065dd7851a2d5fb0344d42de72cbe4d | |
parent | 1224781d6080b8b69a81526ee23b22a1587920ea (diff) |
git-completion.bash: introduce __gitcomp_builtin
This is a __gitcomp wrapper that will execute
git ... --git-completion-helper
to get the list of completable options. The call will be made only
once and cached to avoid performance issues, especially on Windows.
__gitcomp_builtin() allows callers to change its output a bit by adding
some more options, or removing some.
- Current --git-completion-helper for example does not output --no-foo
form, this has to be added manually by __gitcomp_builtin() callers
when necessary
- Some options from --git-completion-helper should only be available in
certain conditions (e.g. --continue and friends). __gitcomp_builtin()
callers can remove them if the conditions are not met.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r-- | contrib/completion/git-completion.bash | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash index 3683c772c5..85e7f26328 100644 --- a/contrib/completion/git-completion.bash +++ b/contrib/completion/git-completion.bash @@ -280,6 +280,39 @@ __gitcomp () esac } +# This function is equivalent to +# +# __gitcomp "$(git xxx --git-completion-helper) ..." +# +# except that the output is cached. Accept 1-3 arguments: +# 1: the git command to execute, this is also the cache key +# 2: extra options to be added on top (e.g. negative forms) +# 3: options to be excluded +__gitcomp_builtin () +{ + # spaces must be replaced with underscore for multi-word + # commands, e.g. "git remote add" becomes remote_add. + local cmd="$1" + local incl="$2" + local excl="$3" + + local var=__gitcomp_builtin_"${cmd/-/_}" + local options + eval "options=\$$var" + + if [ -z "$options" ]; then + # leading and trailing spaces are significant to make + # option removal work correctly. + options=" $(__git ${cmd/_/ } --git-completion-helper) $incl " + for i in $excl; do + options="${options/ $i / }" + done + eval "$var=\"$options\"" + fi + + __gitcomp "$options" +} + # Variation of __gitcomp_nl () that appends to the existing list of # completion candidates, COMPREPLY. __gitcomp_nl_append () |