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git/Documentation/git-mergetool.txt
Junio C Hamano de54ef2724 Merge branch 'da/difftool-updates'
"git difftool --dir-diff" learned to use symbolic links to prepare
temporary copy of the working tree when available.

* da/difftool-updates:
  difftool: silence warning
  Add Code Compare v2.80.4 as a merge / diff tool for Windows
  mergetool,difftool: Document --tool-help consistently
  difftool: Disable --symlinks on cygwin
  difftool: Handle compare() returning -1
  difftool: Wrap long lines for readability
  difftool: Check all return codes from compare()
  difftool: Handle finding mergetools/ in a path with spaces
  difftool: Use symlinks when diffing against the worktree
  difftool: Call the temp directory "git-difftool"
  difftool: Move option values into a hash
  difftool: Eliminate global variables
  difftool: Simplify print_tool_help()
2012-08-27 11:55:17 -07:00

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Text

git-mergetool(1)
================
NAME
----
git-mergetool - Run merge conflict resolution tools to resolve merge conflicts
SYNOPSIS
--------
[verse]
'git mergetool' [--tool=<tool>] [-y|--no-prompt|--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.
--prompt::
Prompt before each invocation of the merge resolution program.
This is the default behaviour; the option is provided to
override any configuration settings.
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 linkgit:git[1] suite