6 git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
11 'git mergetool' [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>...]
16 Use `git mergetool` to run one of several merge utilities to resolve
17 merge conflicts. It is typically run after 'git merge'.
19 If one or more <file> parameters are given, the merge tool program will
20 be run to resolve differences on each file (skipping those without
21 conflicts). Specifying a directory will include all unresolved files in
22 that path. If no <file> names are specified, 'git mergetool' will run
23 the merge tool program on every file with merge conflicts.
29 Use the merge resolution program specified by <tool>.
30 Valid values include emerge, gvimdiff, kdiff3,
31 meld, vimdiff, and tortoisemerge. Run `git mergetool --tool-help`
32 for the list of valid <tool> settings.
34 If a merge resolution program is not specified, 'git mergetool'
35 will use the configuration variable `merge.tool`. If the
36 configuration variable `merge.tool` is not set, 'git mergetool'
37 will pick a suitable default.
39 You can explicitly provide a full path to the tool by setting the
40 configuration variable `mergetool.<tool>.path`. For example, you
41 can configure the absolute path to kdiff3 by setting
42 `mergetool.kdiff3.path`. Otherwise, 'git mergetool' assumes the
43 tool is available in PATH.
45 Instead of running one of the known merge tool programs,
46 'git mergetool' can be customized to run an alternative program
47 by specifying the command line to invoke in a configuration
48 variable `mergetool.<tool>.cmd`.
50 When 'git mergetool' is invoked with this tool (either through the
51 `-t` or `--tool` option or the `merge.tool` configuration
52 variable) the configured command line will be invoked with `$BASE`
53 set to the name of a temporary file containing the common base for
54 the merge, if available; `$LOCAL` set to the name of a temporary
55 file containing the contents of the file on the current branch;
56 `$REMOTE` set to the name of a temporary file containing the
57 contents of the file to be merged, and `$MERGED` set to the name
58 of the file to which the merge tool should write the result of the
61 If the custom merge tool correctly indicates the success of a
62 merge resolution with its exit code, then the configuration
63 variable `mergetool.<tool>.trustExitCode` can be set to `true`.
64 Otherwise, 'git mergetool' will prompt the user to indicate the
65 success of the resolution after the custom tool has exited.
68 Print a list of merge tools that may be used with `--tool`.
72 Don't prompt before each invocation of the merge resolution
76 Prompt before each invocation of the merge resolution program.
77 This is the default behaviour; the option is provided to
78 override any configuration settings.
82 `git mergetool` creates `*.orig` backup files while resolving merges.
83 These are safe to remove once a file has been merged and its
84 `git mergetool` session has completed.
86 Setting the `mergetool.keepBackup` configuration variable to `false`
87 causes `git mergetool` to automatically remove the backup as files
88 are successfully merged.
92 Part of the linkgit:git[1] suite