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authorTao Klerks <tao@klerks.biz>2023-03-18 15:27:43 +0000
committerJunio C Hamano <gitster@pobox.com>2023-04-05 21:03:29 -0700
commit42943b950e12f2d3e56688ecef1b0502e162b436 (patch)
treecc26a9949806fdd075ec1d24d813bf19dbe5e085 /Documentation/config
parentae73b2c8f1da39c39335ee76a0f95857712c22a7 (diff)
downloadgit-42943b950e12f2d3e56688ecef1b0502e162b436.tar.gz
mergetool: new config guiDefault supports auto-toggling gui by DISPLAY
When no merge.tool or diff.tool is configured or manually selected, the selection of a default tool is sensitive to the DISPLAY variable; in a GUI session a gui-specific tool will be proposed if found, and otherwise a terminal-based one. This "GUI-optimizing" behavior is important because a GUI can make a huge difference to a user's ability to understand and correctly complete a non-trivial conflicting merge. Some time ago the merge.guitool and diff.guitool config options were introduced to enable users to configure both a GUI tool, and a non-GUI tool (with fallback if no GUI tool configured), in the same environment. Unfortunately, the --gui argument introduced to support the selection of the guitool is still explicit. When using configured tools, there is no equivalent of the no-tool-configured "propose a GUI tool if we are in a GUI environment" behavior. As proposed in <xmqqmtb8jsej.fsf@gitster.g>, introduce new configuration options, difftool.guiDefault and mergetool.guiDefault, supporting a special value "auto" which causes the corresponding tool or guitool to be selected depending on the presence of a non-empty DISPLAY value. Also support "true" to say "default to the guitool (unless --no-gui is passed on the commandline)", and "false" as the previous default behavior when these new configuration options are not specified. Signed-off-by: Tao Klerks <tao@klerks.biz> Acked-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/config')
-rw-r--r--Documentation/config/difftool.txt7
-rw-r--r--Documentation/config/mergetool.txt7
2 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/config/difftool.txt b/Documentation/config/difftool.txt
index a3f8211210..447c40d85a 100644
--- a/Documentation/config/difftool.txt
+++ b/Documentation/config/difftool.txt
@@ -34,3 +34,10 @@ See the `--trust-exit-code` option in linkgit:git-difftool[1] for more details.
difftool.prompt::
Prompt before each invocation of the diff tool.
+
+difftool.guiDefault::
+ Set `true` to use the `diff.guitool` by default (equivalent to specifying
+ the `--gui` argument), or `auto` to select `diff.guitool` or `diff.tool`
+ depending on the presence of a `DISPLAY` environment variable value. The
+ default is `false`, where the `--gui` argument must be provided
+ explicitly for the `diff.guitool` to be used.
diff --git a/Documentation/config/mergetool.txt b/Documentation/config/mergetool.txt
index e779a122d8..56a7eeeffb 100644
--- a/Documentation/config/mergetool.txt
+++ b/Documentation/config/mergetool.txt
@@ -85,3 +85,10 @@ mergetool.writeToTemp::
mergetool.prompt::
Prompt before each invocation of the merge resolution program.
+
+mergetool.guiDefault::
+ Set `true` to use the `merge.guitool` by default (equivalent to
+ specifying the `--gui` argument), or `auto` to select `merge.guitool`
+ or `merge.tool` depending on the presence of a `DISPLAY` environment
+ variable value. The default is `false`, where the `--gui` argument
+ must be provided explicitly for the `merge.guitool` to be used.