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@xxxxxxxxx>
---
contrib/completion/git-completion.bash | 33 ++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
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 ()
--
2.16.1.207.gedba492059
