[PATCH 3/4] completion: reflog with implicit "show"

["Rubén Justo" <rjusto@gmail.com>]

When no subcommand is specified to "reflog", we assume "show" [1]:

    $ git reflog -h
    usage: git reflog [show] [<log-options>] [<ref>]
    ...

We are not completing correctly this implicit uses of "show":

With ...

    $ git checkout -b default

... we are not completing "default":

    $ git reflog def<TAB><TAB>

And we are incorrectly returning the "subcommands" when:

    $ git reflog default <TAB><TAB>
    delete expire show

Let's use __gitcomp_subcommand to correctly handle implicit
subcommands.

  1. cf39f54efc (git reflog show, 2007-02-08)

Signed-off-by: Rubén Justo <rjusto@gmail.com>
---
 contrib/completion/git-completion.bash | 9 ++++-----
 t/t9902-completion.sh                  | 8 ++++++++
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 5f2e904b56..c41f25aa80 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -2448,13 +2448,12 @@ _git_rebase ()
 _git_reflog ()
 {
 	local subcommands="show delete expire"
-	local subcommand="$(__git_find_on_cmdline "$subcommands")"
 
-	if [ -z "$subcommand" ]; then
-		__gitcomp "$subcommands"
-	else
-		__git_complete_refs
+	if __gitcomp_subcommand "$subcommands"; then
+		return
 	fi
+
+	__git_complete_refs
 }
 
 __git_send_email_confirm_options="always never auto cc compose"
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index aa9a614de3..231e17f378 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -2618,6 +2618,14 @@ test_expect_success 'git clone --config= - value' '
 	EOF
 '
 
+test_expect_success 'git reflog show' '
+	test_when_finished "git checkout -" &&
+	git checkout -b shown &&
+	test_completion "git reflog sho" "show " &&
+	test_completion "git reflog show sho" "shown " &&
+	test_completion "git reflog shown sho" "shown "
+'
+
 test_expect_success 'options with value' '
 	test_completion "git merge -X diff-algorithm=" <<-\EOF
 
-- 
2.43.0