travis-ci: switch to Xcode 10.1 macOS image

diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index 6b563c500f660486951cbcac62876bbda5cc3975..0c7975a0507a35f9624516f0844ad11cd5141d50 100644 (file)
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -8,7 +8,7 @@ git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
 SYNOPSIS
 --------
 [verse]
-'git mergetool' [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>...]
+'git mergetool' [--tool=<tool>] [-y | --[no-]prompt] [<file>...]
 
 DESCRIPTION
 -----------
@@ -71,11 +71,31 @@ success of the resolution after the custom tool has exited.
 --no-prompt::
        Don't prompt before each invocation of the merge resolution
        program.
+       This is the default if the merge resolution program is
+       explicitly specified with the `--tool` option or with the
+       `merge.tool` configuration variable.
 
 --prompt::
-       Prompt before each invocation of the merge resolution program.
-       This is the default behaviour; the option is provided to
-       override any configuration settings.
+       Prompt before each invocation of the merge resolution program
+       to give the user a chance to skip the path.
+
+-g::
+--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`.
+
+--no-gui::
+       This overrides a previous `-g` or `--gui` setting and reads the
+       default merge tool will be read from the configured `merge.tool`
+       variable.
+
+-O<orderfile>::
+       Process files in the order specified in the
+       <orderfile>, which has one shell glob pattern per line.
+       This overrides the `diff.orderFile` configuration variable
+       (see linkgit:git-config[1]).  To cancel `diff.orderFile`,
+       use `-O/dev/null`.
 
 TEMPORARY FILES
 ---------------