SYNOPSIS
--------
-'git-mergetool' [--tool=<tool>] [<file>]...
+'git mergetool' [--tool=<tool>] [<file>]...
DESCRIPTION
-----------
Use `git mergetool` to run one of several merge utilities to resolve
-merge conflicts. It is typically run after linkgit:git-merge[1].
+merge conflicts. It is typically run after 'git-merge'.
If one or more <file> parameters are given, the merge tool program will
be run to resolve differences on each file. If no <file> names are
-specified, `git mergetool` will run the merge tool program on every file
+specified, 'git-mergetool' will run the merge tool program on every file
with merge conflicts.
OPTIONS
Valid merge tools are:
kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge, and opendiff
+
-If a merge resolution program is not specified, `git mergetool`
+If a merge resolution program is not specified, 'git-mergetool'
will use the configuration variable `merge.tool`. If the
-configuration variable `merge.tool` is not set, `git mergetool`
+configuration variable `merge.tool` is not set, 'git-mergetool'
will pick a suitable default.
+
You can explicitly provide a full path to the tool by setting the
configuration variable `mergetool.<tool>.path`. For example, you
can configure the absolute path to kdiff3 by setting
-`mergetool.kdiff3.path`. Otherwise, `git mergetool` assumes the
+`mergetool.kdiff3.path`. Otherwise, 'git-mergetool' assumes the
tool is available in PATH.
++
+Instead of running one of the known merge tool programs,
+'git-mergetool' can be customized to run an alternative program
+by specifying the command line to invoke in a configuration
+variable `mergetool.<tool>.cmd`.
++
+When 'git-mergetool' is invoked with this tool (either through the
+`-t` or `--tool` option or the `merge.tool` configuration
+variable) the configured command line will be invoked with `$BASE`
+set to the name of a temporary file containing the common base for
+the merge, if available; `$LOCAL` set to the name of a temporary
+file containing the contents of the file on the current branch;
+`$REMOTE` set to the name of a temporary file containing the
+contents of the file to be merged, and `$MERGED` set to the name
+of the file to which the merge tool should write the result of the
+merge resolution.
++
+If the custom merge tool correctly indicates the success of a
+merge resolution with its exit code, then the configuration
+variable `mergetool.<tool>.trustExitCode` can be set to `true`.
+Otherwise, 'git-mergetool' will prompt the user to indicate the
+success of the resolution after the custom tool has exited.
Author
------
GIT
---
-Part of the linkgit:git[7] suite
+Part of the linkgit:git[1] suite