| git-difftool(1) |
| =============== |
| |
| NAME |
| ---- |
| git-difftool - Show changes using common diff tools |
| |
| SYNOPSIS |
| -------- |
| [verse] |
| 'git difftool' [<options>] [<commit> [<commit>]] [--] [<path>...] |
| |
| DESCRIPTION |
| ----------- |
| 'git difftool' is a Git command that allows you to compare and edit files |
| between revisions using common diff tools. 'git difftool' is a frontend |
| to 'git diff' and accepts the same options and arguments. See |
| linkgit:git-diff[1]. |
| |
| OPTIONS |
| ------- |
| -d:: |
| --dir-diff:: |
| Copy the modified files to a temporary location and perform |
| a directory diff on them. This mode never prompts before |
| launching the diff tool. |
| |
| -y:: |
| --no-prompt:: |
| Do not prompt before launching a diff tool. |
| |
| --prompt:: |
| Prompt before each invocation of the diff tool. |
| This is the default behaviour; the option is provided to |
| override any configuration settings. |
| |
| -t <tool>:: |
| --tool=<tool>:: |
| Use the diff tool specified by <tool>. Valid values include |
| emerge, kompare, meld, and vimdiff. Run `git difftool --tool-help` |
| for the list of valid <tool> settings. |
| + |
| If a diff tool is not specified, 'git difftool' |
| will use the configuration variable `diff.tool`. If the |
| configuration variable `diff.tool` is not set, 'git difftool' |
| will pick a suitable default. |
| + |
| You can explicitly provide a full path to the tool by setting the |
| configuration variable `difftool.<tool>.path`. For example, you |
| can configure the absolute path to kdiff3 by setting |
| `difftool.kdiff3.path`. Otherwise, 'git difftool' assumes the |
| tool is available in PATH. |
| + |
| Instead of running one of the known diff tools, |
| 'git difftool' can be customized to run an alternative program |
| by specifying the command line to invoke in a configuration |
| variable `difftool.<tool>.cmd`. |
| + |
| When 'git difftool' is invoked with this tool (either through the |
| `-t` or `--tool` option or the `diff.tool` configuration variable) |
| the configured command line will be invoked with the following |
| variables available: `$LOCAL` is set to the name of the temporary |
| file containing the contents of the diff pre-image and `$REMOTE` |
| is set to the name of the temporary file containing the contents |
| of the diff post-image. `$MERGED` is the name of the file which is |
| being compared. `$BASE` is provided for compatibility |
| with custom merge tool commands and has the same value as `$MERGED`. |
| |
| --tool-help:: |
| Print a list of diff tools that may be used with `--tool`. |
| |
| --[no-]symlinks:: |
| 'git difftool''s default behavior is create symlinks to the |
| working tree when run in `--dir-diff` mode and the right-hand |
| side of the comparison yields the same content as the file in |
| the working tree. |
| + |
| Specifying `--no-symlinks` instructs 'git difftool' to create copies |
| instead. `--no-symlinks` is the default on Windows. |
| |
| -x <command>:: |
| --extcmd=<command>:: |
| Specify a custom command for viewing diffs. |
| 'git-difftool' ignores the configured defaults and runs |
| `$command $LOCAL $REMOTE` when this option is specified. |
| Additionally, `$BASE` is set in the environment. |
| |
| -g:: |
| --gui:: |
| When 'git-difftool' is invoked with the `-g` or `--gui` option |
| the default diff tool will be read from the configured |
| `diff.guitool` variable instead of `diff.tool`. |
| |
| See linkgit:git-diff[1] for the full list of supported options. |
| |
| CONFIG VARIABLES |
| ---------------- |
| 'git difftool' falls back to 'git mergetool' config variables when the |
| difftool equivalents have not been defined. |
| |
| diff.tool:: |
| The default diff tool to use. |
| |
| diff.guitool:: |
| The default diff tool to use when `--gui` is specified. |
| |
| difftool.<tool>.path:: |
| Override the path for the given tool. This is useful in case |
| your tool is not in the PATH. |
| |
| difftool.<tool>.cmd:: |
| Specify the command to invoke the specified diff tool. |
| + |
| See the `--tool=<tool>` option above for more details. |
| |
| difftool.prompt:: |
| Prompt before each invocation of the diff tool. |
| |
| SEE ALSO |
| -------- |
| linkgit:git-diff[1]:: |
| Show changes between commits, commit and working tree, etc |
| |
| linkgit:git-mergetool[1]:: |
| Run merge conflict resolution tools to resolve merge conflicts |
| |
| linkgit:git-config[1]:: |
| Get and set repository or global options |
| |
| GIT |
| --- |
| Part of the linkgit:git[1] suite |