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 'git mergetool' [--tool=<tool>] [-y|--no-prompt|--prompt] [<file>...]
  11
  12 DESCRIPTION
  13 -----------
  14
  15 Use `git mergetool` to run one of several merge utilities to resolve
  16 merge conflicts.  It is typically run after 'git merge'.
  17
  18 If one or more <file> parameters are given, the merge tool program will
  19 be run to resolve differences on each file.  If no <file> names are
  20 specified, 'git mergetool' will run the merge tool program on every file
  21 with merge conflicts.
  22
  23 OPTIONS
  24 -------
  25 -t <tool>::
  26 --tool=<tool>::
  27         Use the merge resolution program specified by <tool>.
  28         Valid merge tools are:
  29         araxis, bc3, diffuse, ecmerge, emerge, gvimdiff, kdiff3,
  30         meld, opendiff, p4merge, tkdiff, tortoisemerge, vimdiff and xxdiff.
  31 +
  32 If a merge resolution program is not specified, 'git mergetool'
  33 will use the configuration variable `merge.tool`.  If the
  34 configuration variable `merge.tool` is not set, 'git mergetool'
  35 will pick a suitable default.
  36 +
  37 You can explicitly provide a full path to the tool by setting the
  38 configuration variable `mergetool.<tool>.path`. For example, you
  39 can configure the absolute path to kdiff3 by setting
  40 `mergetool.kdiff3.path`. Otherwise, 'git mergetool' assumes the
  41 tool is available in PATH.
  42 +
  43 Instead of running one of the known merge tool programs,
  44 'git mergetool' can be customized to run an alternative program
  45 by specifying the command line to invoke in a configuration
  46 variable `mergetool.<tool>.cmd`.
  47 +
  48 When 'git mergetool' is invoked with this tool (either through the
  49 `-t` or `--tool` option or the `merge.tool` configuration
  50 variable) the configured command line will be invoked with `$BASE`
  51 set to the name of a temporary file containing the common base for
  52 the merge, if available; `$LOCAL` set to the name of a temporary
  53 file containing the contents of the file on the current branch;
  54 `$REMOTE` set to the name of a temporary file containing the
  55 contents of the file to be merged, and `$MERGED` set to the name
  56 of the file to which the merge tool should write the result of the
  57 merge resolution.
  58 +
  59 If the custom merge tool correctly indicates the success of a
  60 merge resolution with its exit code, then the configuration
  61 variable `mergetool.<tool>.trustExitCode` can be set to `true`.
  62 Otherwise, 'git mergetool' will prompt the user to indicate the
  63 success of the resolution after the custom tool has exited.
  64
  65 -y::
  66 --no-prompt::
  67         Don't prompt before each invocation of the merge resolution
  68         program.
  69
  70 --prompt::
  71         Prompt before each invocation of the merge resolution program.
  72         This is the default behaviour; the option is provided to
  73         override any configuration settings.
  74
  75 TEMPORARY FILES
  76 ---------------
  77 `git mergetool` creates `*.orig` backup files while resolving merges.
  78 These are safe to remove once a file has been merged and its
  79 `git mergetool` session has completed.
  80
  81 Setting the `mergetool.keepBackup` configuration variable to `false`
  82 causes `git mergetool` to automatically remove the backup as files
  83 are successfully merged.
  84
  85 GIT
  86 ---
  87 Part of the linkgit:git[1] suite