Documentation/git-mergetool.txt

   1 git-mergetool(1)
   2 ================
   3
   4 NAME
   5 ----
   6 git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
   7
   8 SYNOPSIS
   9 --------
  10 [verse]
  11 'git mergetool' [--tool=<tool>] [-y | --[no-]prompt] [<file>...]
  12
  13 DESCRIPTION
  14 -----------
  15
  16 Use `git mergetool` to run one of several merge utilities to resolve
  17 merge conflicts.  It is typically run after 'git merge'.
  18
  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.
  24
  25 OPTIONS
  26 -------
  27 -t <tool>::
  28 --tool=<tool>::
  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.
  33 +
  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.
  38 +
  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.
  44 +
  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`.
  49 +
  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
  59 merge resolution.
  60 +
  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.
  66
  67 --tool-help::
  68         Print a list of merge tools that may be used with `--tool`.
  69
  70 -y::
  71 --no-prompt::
  72         Don't prompt before each invocation of the merge resolution
  73         program.
  74         This is the default if the merge resolution program is
  75         explicitly specified with the `--tool` option or with the
  76         `merge.tool` configuration variable.
  77
  78 --prompt::
  79         Prompt before each invocation of the merge resolution program
  80         to give the user a chance to skip the path.
  81
  82 -g::
  83 --gui::
  84         When 'git-mergetool' is invoked with the `-g` or `--gui` option
  85         the default merge tool will be read from the configured
  86         `merge.guitool` variable instead of `merge.tool`. If
  87         `merge.guitool` is not set, we will fallback to the tool
  88         configured under `merge.tool`.
  89
  90 --no-gui::
  91         This overrides a previous `-g` or `--gui` setting and reads the
  92         default merge tool will be read from the configured `merge.tool`
  93         variable.
  94
  95 -O<orderfile>::
  96         Process files in the order specified in the
  97         <orderfile>, which has one shell glob pattern per line.
  98         This overrides the `diff.orderFile` configuration variable
  99         (see linkgit:git-config[1]).  To cancel `diff.orderFile`,
 100         use `-O/dev/null`.
 101
 102 TEMPORARY FILES
 103 ---------------
 104 `git mergetool` creates `*.orig` backup files while resolving merges.
 105 These are safe to remove once a file has been merged and its
 106 `git mergetool` session has completed.
 107
 108 Setting the `mergetool.keepBackup` configuration variable to `false`
 109 causes `git mergetool` to automatically remove the backup as files
 110 are successfully merged.
 111
 112 GIT
 113 ---
 114 Part of the linkgit:git[1] suite