completion: support `git mergetool --[no-]gui`

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Anmol Mago <anmolmago@gmail.com>
Signed-off-by: Brian Ho <briankyho@gmail.com>
Signed-off-by: David Lu <david.lu97@outlook.com>
Signed-off-by: Ryan Wang <shirui.wang@hotmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index db7fd87b6b27f6e85a48b31d08e0480648f9c5d5..a45b4a0508b7001cefbf82680068dc231a57dbe0 100644 (file)
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -1833,7 +1833,7 @@ _git_mergetool ()
                return
                ;;
        --*)
-               __gitcomp "--tool= --prompt --no-prompt"
+               __gitcomp "--tool= --prompt --no-prompt --gui --no-gui"
                return
                ;;
        esac