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>] [<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 linkgit:git-merge[1].
  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 or --tool=<tool>::
  26         Use the merge resolution program specified by <tool>.
  27         Valid merge tools are:
  28         kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge, and opendiff
  29 +
  30 If a merge resolution program is not specified, `git-mergetool`
  31 will use the configuration variable `merge.tool`.  If the
  32 configuration variable `merge.tool` is not set, `git-mergetool`
  33 will pick a suitable default.
  34 +
  35 You can explicitly provide a full path to the tool by setting the
  36 configuration variable `mergetool.<tool>.path`. For example, you
  37 can configure the absolute path to kdiff3 by setting
  38 `mergetool.kdiff3.path`. Otherwise, `git-mergetool` assumes the
  39 tool is available in PATH.
  40 +
  41 Instead of running one of the known merge tool programs
  42 `git-mergetool` can be customized to run an alternative program
  43 by specifying the command line to invoke in a configration
  44 variable `mergetool.<tool>.cmd`.
  45 +
  46 When `git-mergetool` is invoked with this tool (either through the
  47 `-t` or `--tool` option or the `merge.tool` configuration
  48 variable) the configured command line will be invoked with `$BASE`
  49 set to the name of a temporary file containing the common base for
  50 the merge, if available; `$LOCAL` set to the name of a temporary
  51 file containing the contents of the file on the current branch;
  52 `$REMOTE` set to the name of a temporary file containing the
  53 contents of the file to be merged, and `$MERGED` set to the name
  54 of the file to which the merge tool should write the result of the
  55 merge resolution.
  56 +
  57 If the custom merge tool correctly indicates the success of a
  58 merge resolution with its exit code then the configuration
  59 variable `mergetool.<tool>.trustExitCode` can be set to `true`.
  60 Otherwise, `git-mergetool` will prompt the user to indicate the
  61 success of the resolution after the custom tool has exited.
  62
  63 Author
  64 ------
  65 Written by Theodore Y Ts'o <tytso@mit.edu>
  66
  67 Documentation
  68 --------------
  69 Documentation by Theodore Y Ts'o.
  70
  71 GIT
  72 ---
  73 Part of the linkgit:git[1] suite