1git-difftool(1) 2=============== 3 4NAME 5---- 6git-difftool - Show changes using common diff tools 7 8SYNOPSIS 9-------- 10'git difftool' [<options>] [<commit> [<commit>]] [--] [<path>...] 11 12DESCRIPTION 13----------- 14'git difftool' is a git command that allows you to compare and edit files 15between revisions using common diff tools. 'git difftool' is a frontend 16to 'git diff' and accepts the same options and arguments. See 17linkgit:git-diff[1]. 18 19OPTIONS 20------- 21-y:: 22--no-prompt:: 23 Do not prompt before launching a diff tool. 24 25--prompt:: 26 Prompt before each invocation of the diff tool. 27 This is the default behaviour; the option is provided to 28 override any configuration settings. 29 30-t <tool>:: 31--tool=<tool>:: 32 Use the diff tool specified by <tool>. 33 Valid merge tools are: 34 kdiff3, kompare, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, 35 ecmerge, diffuse, opendiff, p4merge and araxis. 36+ 37If a diff tool is not specified, 'git difftool' 38will use the configuration variable `diff.tool`. If the 39configuration variable `diff.tool` is not set, 'git difftool' 40will pick a suitable default. 41+ 42You can explicitly provide a full path to the tool by setting the 43configuration variable `difftool.<tool>.path`. For example, you 44can configure the absolute path to kdiff3 by setting 45`difftool.kdiff3.path`. Otherwise, 'git difftool' assumes the 46tool is available in PATH. 47+ 48Instead of running one of the known diff tools, 49'git difftool' can be customized to run an alternative program 50by specifying the command line to invoke in a configuration 51variable `difftool.<tool>.cmd`. 52+ 53When 'git difftool' is invoked with this tool (either through the 54`-t` or `--tool` option or the `diff.tool` configuration variable) 55the configured command line will be invoked with the following 56variables available: `$LOCAL` is set to the name of the temporary 57file containing the contents of the diff pre-image and `$REMOTE` 58is set to the name of the temporary file containing the contents 59of the diff post-image. `$BASE` is provided for compatibility 60with custom merge tool commands and has the same value as `$LOCAL`. 61 62-x <command>:: 63--extcmd=<command>:: 64 Specify a custom command for viewing diffs. 65 'git-difftool' ignores the configured defaults and runs 66 `$command $LOCAL $REMOTE` when this option is specified. 67 68-g:: 69--gui:: 70 When 'git-difftool' is invoked with the `-g` or `--gui` option 71 the default diff tool will be read from the configured 72 `diff.guitool` variable instead of `diff.tool`. 73 74See linkgit:git-diff[1] for the full list of supported options. 75 76CONFIG VARIABLES 77---------------- 78'git difftool' falls back to 'git mergetool' config variables when the 79difftool equivalents have not been defined. 80 81diff.tool:: 82 The default diff tool to use. 83 84diff.guitool:: 85 The default diff tool to use when `--gui` is specified. 86 87difftool.<tool>.path:: 88 Override the path for the given tool. This is useful in case 89 your tool is not in the PATH. 90 91difftool.<tool>.cmd:: 92 Specify the command to invoke the specified diff tool. 93+ 94See the `--tool=<tool>` option above for more details. 95 96difftool.prompt:: 97 Prompt before each invocation of the diff tool. 98 99SEE ALSO 100-------- 101linkgit:git-diff[1]:: 102 Show changes between commits, commit and working tree, etc 103 104linkgit:git-mergetool[1]:: 105 Run merge conflict resolution tools to resolve merge conflicts 106 107linkgit:git-config[1]:: 108 Get and set repository or global options 109 110 111AUTHOR 112------ 113Written by David Aguilar <davvid@gmail.com>. 114 115Documentation 116-------------- 117Documentation by David Aguilar and the git-list <git@vger.kernel.org>. 118 119GIT 120--- 121Part of the linkgit:git[1] suite