completion: audit and guard $GIT_* against unset use

$GIT_COMPLETION_SHOW_ALL and $GIT_TESTING_ALL_COMMAND_LIST were used without guarding against them being unset, causing errors in nounset (set -u) mode. No other nounset-unsafe $GIT_* usages were found. While at it, remove a superfluous (duplicate) unset guard from $GIT_DIR in __git_find_repo_path. Signed-off-by: Ville Skyttä <ville.skytta@iki.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Ville Skyttä committed Apr 8, 2021 at 10:06 UTC c5c0548d793edf4a6e319f237f3a01a1f093bbd7
1 file changed +3 -3
contrib/completion/git-completion.bash
+3 -3
@@ -77,7 +77,7 @@ __git_find_repo_path ()
77 test -d "$__git_dir" &&
78 __git_repo_path="$__git_dir"
79 elif [ -n "${GIT_DIR-}" ]; then
80 - test -d "${GIT_DIR-}" &&
80 + test -d "$GIT_DIR" &&
81 __git_repo_path="$GIT_DIR"
82 elif [ -d .git ]; then
83 __git_repo_path=.git
@@ -427,7 +427,7 @@ __gitcomp_builtin ()
427
428 if [ -z "$options" ]; then
429 local completion_helper
430 - if [ "$GIT_COMPLETION_SHOW_ALL" = "1" ]; then
430 + if [ "${GIT_COMPLETION_SHOW_ALL-}" = "1" ]; then
431 completion_helper="--git-completion-helper-all"
432 else
433 completion_helper="--git-completion-helper"
@@ -1910,7 +1910,7 @@ _git_help ()
1910 return
1911 ;;
1912 esac
1913 - if test -n "$GIT_TESTING_ALL_COMMAND_LIST"
1913 + if test -n "${GIT_TESTING_ALL_COMMAND_LIST-}"
1914 then
1915 __gitcomp "$GIT_TESTING_ALL_COMMAND_LIST $(__git --list-cmds=alias,list-guide) gitk"
1916 else