[PATCH] completion: add 'git history' subcommands

[Vincent Mailhol <mailhol@kernel.org>]

Use the parse-options completion helpers for the "git history"
subcommands and their options. Complete positional arguments as
revisions, and add coverage for each kind of completion.

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
---
 contrib/completion/git-completion.bash | 24 ++++++++++++++++++++++++
 t/t9902-completion.sh                  | 17 +++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index e875787710..f10813c8d7 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2137,6 +2137,30 @@ _git_help ()
 	fi
 }
 
+_git_history ()
+{
+	local subcommands subcommand
+
+	__git_resolve_builtins "history"
+
+	subcommands="$___git_resolved_builtins"
+	subcommand="$(__git_find_subcommand "$subcommands")"
+
+	if [ -z "$subcommand" ]; then
+		__gitcomp "$subcommands"
+		return
+	fi
+
+	case "$cur" in
+	--*)
+		__gitcomp_builtin "history_$subcommand"
+		;;
+	*)
+		__git_complete_refs
+		;;
+	esac
+}
+
 _git_init ()
 {
 	case "$cur" in
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 9ae3c48ebd..08ecf682ed 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -3107,6 +3107,23 @@ test_expect_success 'git clone --config= - value' '
 	EOF
 '
 
+test_expect_success 'git history subcommands' '
+	test_completion "git history " <<-\EOF
+	drop Z
+	fixup Z
+	reword Z
+	split Z
+	EOF
+'
+
+test_expect_success 'git history subcommand options' '
+	test_completion "git history fixup --upd" "--update-refs="
+'
+
+test_expect_success 'git history revisions' '
+	test_completion "git history split ma" "main "
+'
+
 test_expect_success 'git reflog show' '
 	test_when_finished "git checkout - && git branch -d shown" &&
 	git checkout -b shown &&

---
base-commit: 5b2471720c93ee30e5764a19f3d3b3ae9ec9712a
change-id: 20260804-history_autocompletion-84620c2f8500