NAME

       git-mergetool - Run merge conflict resolution tools to resolve merge conflicts

SYNOPSIS

       git mergetool [--tool=<tool>] [-y | --[no-]prompt] [<file>...]

DESCRIPTION

       Use git mergetool to run one of several merge utilities to resolve 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 (skipping those without conflicts). Specifying a directory will
       include all unresolved files in that path. If no <file> names are specified, git mergetool
       will run the merge tool program on every file with merge conflicts.

OPTIONS

       -t <tool>, --tool=<tool>
           Use the merge resolution program specified by <tool>. Valid values include emerge,
           gvimdiff, kdiff3, meld, vimdiff, and tortoisemerge. Run git mergetool --tool-help for
           the list of valid <tool> settings.

           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 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 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.

       --tool-help
           Print a list of merge tools that may be used with --tool.

       -y, --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 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. 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 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 git-
           config(1)). To cancel diff.orderFile, use -O/dev/null.

TEMPORARY FILES

       git mergetool creates *.orig backup files while resolving merges. These are safe to remove
       once a file has been merged and its git mergetool session has completed.

       Setting the mergetool.keepBackup configuration variable to false causes git mergetool to
       automatically remove the backup as files are successfully merged.

GIT

       Part of the git(1) suite