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authorÆvar Arnfjörð Bjarmason <avarab@gmail.com>2021-09-22 00:40:38 +0200
committerJunio C Hamano <gitster@pobox.com>2021-09-23 10:30:43 -0700
commita9bacccae54cd449821416199f70c4dd2fcb9be4 (patch)
tree9e6372ebda52532085f7b978ab086e448e29cab7 /contrib/completion/git-completion.bash
parent5a5f04d86b870bfec1c8cfefa8207a4e110fa128 (diff)
downloadgit-a9bacccae54cd449821416199f70c4dd2fcb9be4.tar.gz
help / completion: make "git help" do the hard work
The "help" builtin has been able to emit configuration variables since e17ca926371 (completion: drop the hard coded list of config vars, 2018-05-26), but it hasn't produced exactly the format the completion script wanted. Let's do that. We got partway there in 2675ea1cc0f (completion: use 'sort -u' to deduplicate config variable names, 2019-08-13) and d9438873c4d (completion: deduplicate configuration sections, 2019-08-13), but after both we still needed some sorting, de-duplicating and awk post-processing of the list. We can instead simply do the relevant parsing ourselves (we were doing most of it already), and call string_list_remove_duplicates() after already sorting the list, so the caller doesn't need to invoke "sort -u". The "--config-for-completion" output is the same as before after being passed through "sort -u". Then add a new "--config-sections-for-completion" option. Under that output we'll emit config sections like "alias" (instead of "alias." in the --config-for-completion output). We need to be careful to leave the "--config-for-completion" option compatible with users git, but are still running a shell with an older git-completion.bash. If we e.g. changed the option name they'd see messages about git-completion.bash being unable to find the "--config-for-completion" option. Such backwards compatibility isn't something we should bend over backwards for, it's only helping users who: * Upgrade git * Are in an old shell * The git-completion.bash in that shell hasn't cached the old "--config-for-completion" output already. But since it's easy in this case to retain compatibility, let's do it, the older versions of git-completion.bash won't care that the input they get doesn't change after a "sort -u". While we're at it let's make "--config-for-completion" die if there's anything left over in "argc", and do the same in the new "--config-sections-for-completion" option. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'contrib/completion/git-completion.bash')
-rw-r--r--contrib/completion/git-completion.bash21
1 files changed, 10 insertions, 11 deletions
diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 8108eda1e8..b9f6370193 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2503,7 +2503,14 @@ __git_config_vars=
__git_compute_config_vars ()
{
test -n "$__git_config_vars" ||
- __git_config_vars="$(git help --config-for-completion | sort -u)"
+ __git_config_vars="$(git help --config-for-completion)"
+}
+
+__git_config_sections=
+__git_compute_config_sections ()
+{
+ test -n "$__git_config_sections" ||
+ __git_config_sections="$(git help --config-sections-for-completion)"
}
# Completes possible values of various configuration variables.
@@ -2717,16 +2724,8 @@ __git_complete_config_variable_name ()
__gitcomp "$__git_config_vars" "" "$cur_" "$sfx"
;;
*)
- __git_compute_config_vars
- __gitcomp "$(echo "$__git_config_vars" |
- awk -F . '{
- sections[$1] = 1
- }
- END {
- for (s in sections)
- print s "."
- }
- ')" "" "$cur_"
+ __git_compute_config_sections
+ __gitcomp "$__git_config_sections" "" "$cur_" "."
;;
esac
}