1git-difftool(1) 2=============== 3 4NAME 5---- 6git-difftool - Show changes using common diff tools 7 8SYNOPSIS 9-------- 10[verse] 11'git difftool' [<options>] [<commit> [<commit>]] [--] [<path>...] 12 13DESCRIPTION 14----------- 15'git difftool' is a git command that allows you to compare and edit files 16between revisions using common diff tools. 'git difftool' is a frontend 17to 'git diff' and accepts the same options and arguments. See 18linkgit:git-diff[1]. 19 20OPTIONS 21------- 22-y:: 23--no-prompt:: 24 Do not prompt before launching a diff tool. 25 26--prompt:: 27 Prompt before each invocation of the diff tool. 28 This is the default behaviour; the option is provided to 29 override any configuration settings. 30 31-t <tool>:: 32--tool=<tool>:: 33 Use the diff tool specified by <tool>. 34 Valid merge tools are: 35 araxis, bc3, diffuse, emerge, ecmerge, gvimdiff, kdiff3, 36 kompare, meld, opendiff, p4merge, tkdiff, vimdiff and xxdiff. 37+ 38If a diff tool is not specified, 'git difftool' 39will use the configuration variable `diff.tool`. If the 40configuration variable `diff.tool` is not set, 'git difftool' 41will pick a suitable default. 42+ 43You can explicitly provide a full path to the tool by setting the 44configuration variable `difftool.<tool>.path`. For example, you 45can configure the absolute path to kdiff3 by setting 46`difftool.kdiff3.path`. Otherwise, 'git difftool' assumes the 47tool is available in PATH. 48+ 49Instead of running one of the known diff tools, 50'git difftool' can be customized to run an alternative program 51by specifying the command line to invoke in a configuration 52variable `difftool.<tool>.cmd`. 53+ 54When 'git difftool' is invoked with this tool (either through the 55`-t` or `--tool` option or the `diff.tool` configuration variable) 56the configured command line will be invoked with the following 57variables available: `$LOCAL` is set to the name of the temporary 58file containing the contents of the diff pre-image and `$REMOTE` 59is set to the name of the temporary file containing the contents 60of the diff post-image. `$MERGED` is the name of the file which is 61being compared. `$BASE` is provided for compatibility 62with custom merge tool commands and has the same value as `$MERGED`. 63 64-x <command>:: 65--extcmd=<command>:: 66 Specify a custom command for viewing diffs. 67 'git-difftool' ignores the configured defaults and runs 68 `$command $LOCAL $REMOTE` when this option is specified. 69 Additionally, `$BASE` is set in the environment. 70 71-g:: 72--gui:: 73 When 'git-difftool' is invoked with the `-g` or `--gui` option 74 the default diff tool will be read from the configured 75 `diff.guitool` variable instead of `diff.tool`. 76 77See linkgit:git-diff[1] for the full list of supported options. 78 79CONFIG VARIABLES 80---------------- 81'git difftool' falls back to 'git mergetool' config variables when the 82difftool equivalents have not been defined. 83 84diff.tool:: 85 The default diff tool to use. 86 87diff.guitool:: 88 The default diff tool to use when `--gui` is specified. 89 90difftool.<tool>.path:: 91 Override the path for the given tool. This is useful in case 92 your tool is not in the PATH. 93 94difftool.<tool>.cmd:: 95 Specify the command to invoke the specified diff tool. 96+ 97See the `--tool=<tool>` option above for more details. 98 99difftool.prompt:: 100 Prompt before each invocation of the diff tool. 101 102SEE ALSO 103-------- 104linkgit:git-diff[1]:: 105 Show changes between commits, commit and working tree, etc 106 107linkgit:git-mergetool[1]:: 108 Run merge conflict resolution tools to resolve merge conflicts 109 110linkgit:git-config[1]:: 111 Get and set repository or global options 112 113GIT 114--- 115Part of the linkgit:git[1] suite