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From: Denton Liu <liu.denton@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	David Aguilar <davvid@gmail.com>
Subject: [PATCH 3/5] mergetool: fallback to tool when guitool unavailable
Date: Sun, 21 Apr 2019 22:07:45 -0700	[thread overview]
Message-ID: <de1b897a11f96d2883907640c29313dd26886ea3.1555880168.git.liu.denton@gmail.com> (raw)
In-Reply-To: <cover.1555880168.git.liu.denton@gmail.com>

In git-difftool, if the tool is called with --gui but `diff.guitool` is
not set, it falls back to `diff.tool`. Make git-mergetool also fallback
from `merge.guitool` to `merge.tool` if the former is undefined.

If git-difftool were to use `get_configured_mergetool`, it would also
get the fallback behaviour in the following precedence:

1. diff.guitool
2. merge.guitool
3. diff.tool
4. merge.tool

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 Documentation/git-mergetool.txt |  4 +++-
 git-mergetool--lib.sh           | 27 ++++++++++++++++++---------
 t/t7610-mergetool.sh            | 19 +++++++++++++++++++
 3 files changed, 40 insertions(+), 10 deletions(-)

diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index 0c7975a050..6b14702e78 100644
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -83,7 +83,9 @@ success of the resolution after the custom tool has exited.
 --gui::
 	When 'git-mergetool' is invoked with the `-g` or `--gui` option
 	the default merge tool will be read from the configured
-	`merge.guitool` variable instead of `merge.tool`.
+	`merge.guitool` variable instead of `merge.tool`. If
+	`merge.guitool` is not set, we will fallback to the tool
+	configured under `merge.tool`.
 
 --no-gui::
 	This overrides a previous `-g` or `--gui` setting and reads the
diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index d5e2c6c5c6..68a85f4a7b 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -350,20 +350,29 @@ guess_merge_tool () {
 }
 
 get_configured_merge_tool () {
-	# If first argument is true, find the guitool instead
-	if test "$1" = true
+	is_gui="$1"
+	sections="merge"
+	keys="tool"
+
+	if diff_mode
 	then
-		gui_prefix=gui
+		sections="diff $sections"
 	fi
 
-	# Diff mode first tries diff.(gui)tool and falls back to merge.(gui)tool.
-	# Merge mode only checks merge.(gui)tool
-	if diff_mode
+	if "$is_gui" = true
 	then
-		merge_tool=$(git config diff.${gui_prefix}tool || git config merge.${gui_prefix}tool)
-	else
-		merge_tool=$(git config merge.${gui_prefix}tool)
+		keys="guitool $keys"
 	fi
+
+	IFS=' '
+	for key in $keys
+	do
+		for section in $sections
+		do
+			merge_tool=$(git config $section.$key) && break 2
+		done
+	done
+
 	if test -n "$merge_tool" && ! valid_tool "$merge_tool"
 	then
 		echo >&2 "git config option $TOOL_MODE.${gui_prefix}tool set to unknown tool: $merge_tool"
diff --git a/t/t7610-mergetool.sh b/t/t7610-mergetool.sh
index 5f37d7a1ff..bc2c9eaa30 100755
--- a/t/t7610-mergetool.sh
+++ b/t/t7610-mergetool.sh
@@ -167,6 +167,25 @@ test_expect_success 'gui mergetool' '
 	git commit -m "branch1 resolved with mergetool"
 '
 
+test_expect_success 'gui mergetool without merge.guitool set fallsback to merge.tool' '
+	test_when_finished "git reset --hard" &&
+	git checkout -b test$test_count branch1 &&
+	git submodule update -N &&
+	test_must_fail git merge master >/dev/null 2>&1 &&
+	( yes "" | git mergetool --gui both >/dev/null 2>&1 ) &&
+	( yes "" | git mergetool -g file1 file1 ) &&
+	( yes "" | git mergetool --gui file2 "spaced name" >/dev/null 2>&1 ) &&
+	( yes "" | git mergetool --gui subdir/file3 >/dev/null 2>&1 ) &&
+	( yes "d" | git mergetool --gui file11 >/dev/null 2>&1 ) &&
+	( yes "d" | git mergetool --gui file12 >/dev/null 2>&1 ) &&
+	( yes "l" | git mergetool --gui submod >/dev/null 2>&1 ) &&
+	test "$(cat file1)" = "master updated" &&
+	test "$(cat file2)" = "master new" &&
+	test "$(cat subdir/file3)" = "master new sub" &&
+	test "$(cat submod/bar)" = "branch1 submodule" &&
+	git commit -m "branch1 resolved with mergetool"
+'
+
 test_expect_success 'mergetool crlf' '
 	test_when_finished "git reset --hard" &&
 	# This test_config line must go after the above reset line so that
-- 
2.21.0.967.gf85e14fd49


  parent reply	other threads:[~2019-04-22  5:07 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-22  5:07 [PATCH 0/5] difftool and mergetool improvements Denton Liu
2019-04-22  5:07 ` [PATCH 1/5] t7610: add mergetool --gui tests Denton Liu
2019-04-22  5:07 ` [PATCH 2/5] mergetool: use get_merge_tool function Denton Liu
2019-04-22  7:07   ` Eric Sunshine
2019-04-22  8:35     ` Denton Liu
2019-04-22  5:07 ` Denton Liu [this message]
2019-04-22  5:07 ` [PATCH 4/5] difftool: make --gui, --tool and --extcmd exclusive Denton Liu
2019-04-22  7:03   ` Eric Sunshine
2019-04-22  5:07 ` [PATCH 5/5] difftool: fallback on merge.guitool Denton Liu
2019-04-22 18:18   ` Jeff Hostetler
2019-04-22 18:33     ` Denton Liu
2019-04-23  8:53 ` [PATCH v2 0/5] difftool and mergetool improvements Denton Liu
2019-04-23  8:53   ` [PATCH v2 1/5] t7610: add mergetool --gui tests Denton Liu
2019-04-24  7:07     ` Junio C Hamano
2019-04-23  8:54   ` [PATCH v2 2/5] mergetool: use get_merge_tool_guessed function Denton Liu
2019-04-24  7:27     ` Junio C Hamano
2019-04-23  8:54   ` [PATCH v2 3/5] mergetool: fallback to tool when guitool unavailable Denton Liu
2019-04-23  8:54   ` [PATCH v2 4/5] difftool: make --gui, --tool and --extcmd mutually exclusive Denton Liu
2019-04-23  8:54   ` [PATCH v2 5/5] difftool: fallback on merge.guitool Denton Liu
2019-04-24 22:46   ` [PATCH v3 0/6] difftool and mergetool improvements Denton Liu
2019-04-24 22:46     ` [PATCH v3 1/6] t7610: unsuppress output Denton Liu
2019-04-25  2:31       ` Junio C Hamano
2019-04-24 22:46     ` [PATCH v3 2/6] t7610: add mergetool --gui tests Denton Liu
2019-04-24 22:47     ` [PATCH v3 3/6] mergetool: use get_merge_tool function Denton Liu
2019-04-25  2:36       ` Junio C Hamano
2019-04-24 22:47     ` [PATCH v3 4/6] mergetool: fallback to tool when guitool unavailable Denton Liu
2019-04-25  3:02       ` Junio C Hamano
2019-04-25  5:16         ` Denton Liu
2019-04-24 22:47     ` [PATCH v3 5/6] difftool: make --gui, --tool and --extcmd mutually exclusive Denton Liu
2019-04-24 22:47     ` [PATCH v3 6/6] difftool: fallback on merge.guitool Denton Liu
2019-04-25  3:10       ` Junio C Hamano
2019-04-25  9:54     ` [PATCH v4 0/6] difftool and mergetool improvements Denton Liu
2019-04-25  9:54       ` [PATCH v4 1/6] t7610: unsuppress output Denton Liu
2019-04-25  9:54       ` [PATCH v4 2/6] t7610: add mergetool --gui tests Denton Liu
2019-04-25  9:54       ` [PATCH v4 3/6] mergetool: use get_merge_tool function Denton Liu
2019-04-28 23:52         ` David Aguilar
2019-04-25  9:54       ` [PATCH v4 4/6] mergetool: fallback to tool when guitool unavailable Denton Liu
2019-04-28 23:56         ` David Aguilar
2019-04-25  9:54       ` [PATCH v4 5/6] difftool: make --gui, --tool and --extcmd mutually exclusive Denton Liu
2019-04-25  9:54       ` [PATCH v4 6/6] difftool: fallback on merge.guitool Denton Liu
2019-04-29  6:20       ` [PATCH v5 0/7] difftool and mergetool improvements Denton Liu
2019-04-29  6:21         ` [PATCH v5 1/7] t7610: unsuppress output Denton Liu
2019-04-29  6:21         ` [PATCH v5 2/7] t7610: add mergetool --gui tests Denton Liu
2019-04-29  6:21         ` [PATCH v5 3/7] mergetool: use get_merge_tool function Denton Liu
2019-04-29  6:21         ` [PATCH v5 4/7] mergetool--lib: create gui_mode function Denton Liu
2019-04-29  6:21         ` [PATCH v5 5/7] mergetool: fallback to tool when guitool unavailable Denton Liu
2019-04-29  6:21         ` [PATCH v5 6/7] difftool: make --gui, --tool and --extcmd mutually exclusive Denton Liu
2019-04-29  6:21         ` [PATCH v5 7/7] difftool: fallback on merge.guitool Denton Liu

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