Autogenerated HTML docs for v2.46.0-540-g4c42d
[git-htmldocs.git] / git-difftool.html
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441 <body class="manpage">
442 <div id="header">
443 <h1>git-difftool(1) Manual Page</h1>
444 <h2 id="_name">NAME</h2>
445 <div class="sectionbody">
446 <p>git-difftool - Show changes using common diff tools</p>
447 </div>
448 </div>
449 <div id="content">
450 <div class="sect1">
451 <h2 id="_synopsis">SYNOPSIS</h2>
452 <div class="sectionbody">
453 <div class="verseblock">
454 <pre class="content"><em>git difftool</em> [&lt;options&gt;] [&lt;commit&gt; [&lt;commit&gt;]] [--] [&lt;path&gt;&#8230;&#8203;]</pre>
455 </div>
456 </div>
457 </div>
458 <div class="sect1">
459 <h2 id="_description">DESCRIPTION</h2>
460 <div class="sectionbody">
461 <div class="paragraph">
462 <p><em>git difftool</em> is a Git command that allows you to compare and edit files
463 between revisions using common diff tools. <em>git difftool</em> is a frontend
464 to <em>git diff</em> and accepts the same options and arguments. See
465 <a href="git-diff.html">git-diff(1)</a>.</p>
466 </div>
467 </div>
468 </div>
469 <div class="sect1">
470 <h2 id="_options">OPTIONS</h2>
471 <div class="sectionbody">
472 <div class="dlist">
473 <dl>
474 <dt class="hdlist1">-d</dt>
475 <dt class="hdlist1">--dir-diff</dt>
476 <dd>
477 <p>Copy the modified files to a temporary location and perform
478 a directory diff on them. This mode never prompts before
479 launching the diff tool.</p>
480 </dd>
481 <dt class="hdlist1">-y</dt>
482 <dt class="hdlist1">--no-prompt</dt>
483 <dd>
484 <p>Do not prompt before launching a diff tool.</p>
485 </dd>
486 <dt class="hdlist1">--prompt</dt>
487 <dd>
488 <p>Prompt before each invocation of the diff tool.
489 This is the default behaviour; the option is provided to
490 override any configuration settings.</p>
491 </dd>
492 <dt class="hdlist1">--rotate-to=&lt;file&gt;</dt>
493 <dd>
494 <p>Start showing the diff for the given path,
495 the paths before it will move to the end and output.</p>
496 </dd>
497 <dt class="hdlist1">--skip-to=&lt;file&gt;</dt>
498 <dd>
499 <p>Start showing the diff for the given path, skipping all
500 the paths before it.</p>
501 </dd>
502 <dt class="hdlist1">-t &lt;tool&gt;</dt>
503 <dt class="hdlist1">--tool=&lt;tool&gt;</dt>
504 <dd>
505 <p>Use the diff tool specified by &lt;tool&gt;. Valid values include
506 emerge, kompare, meld, and vimdiff. Run <code>git difftool --tool-help</code>
507 for the list of valid &lt;tool&gt; settings.</p>
508 <div class="paragraph">
509 <p>If a diff tool is not specified, <em>git difftool</em>
510 will use the configuration variable <code>diff.tool</code>. If the
511 configuration variable <code>diff.tool</code> is not set, <em>git difftool</em>
512 will pick a suitable default.</p>
513 </div>
514 <div class="paragraph">
515 <p>You can explicitly provide a full path to the tool by setting the
516 configuration variable <code>difftool.&lt;tool&gt;.path</code>. For example, you
517 can configure the absolute path to kdiff3 by setting
518 <code>difftool.kdiff3.path</code>. Otherwise, <em>git difftool</em> assumes the
519 tool is available in PATH.</p>
520 </div>
521 <div class="paragraph">
522 <p>Instead of running one of the known diff tools,
523 <em>git difftool</em> can be customized to run an alternative program
524 by specifying the command line to invoke in a configuration
525 variable <code>difftool.&lt;tool&gt;.cmd</code>.</p>
526 </div>
527 <div class="paragraph">
528 <p>When <em>git difftool</em> is invoked with this tool (either through the
529 <code>-t</code> or <code>--tool</code> option or the <code>diff.tool</code> configuration variable)
530 the configured command line will be invoked with the following
531 variables available: <code>$LOCAL</code> is set to the name of the temporary
532 file containing the contents of the diff pre-image and <code>$REMOTE</code>
533 is set to the name of the temporary file containing the contents
534 of the diff post-image. <code>$MERGED</code> is the name of the file which is
535 being compared. <code>$BASE</code> is provided for compatibility
536 with custom merge tool commands and has the same value as <code>$MERGED</code>.</p>
537 </div>
538 </dd>
539 <dt class="hdlist1">--tool-help</dt>
540 <dd>
541 <p>Print a list of diff tools that may be used with <code>--tool</code>.</p>
542 </dd>
543 <dt class="hdlist1">--[no-]symlinks</dt>
544 <dd>
545 <p><em>git difftool</em>'s default behavior is to create symlinks to the
546 working tree when run in <code>--dir-diff</code> mode and the right-hand
547 side of the comparison yields the same content as the file in
548 the working tree.</p>
549 <div class="paragraph">
550 <p>Specifying <code>--no-symlinks</code> instructs <em>git difftool</em> to create copies
551 instead. <code>--no-symlinks</code> is the default on Windows.</p>
552 </div>
553 </dd>
554 <dt class="hdlist1">-x &lt;command&gt;</dt>
555 <dt class="hdlist1">--extcmd=&lt;command&gt;</dt>
556 <dd>
557 <p>Specify a custom command for viewing diffs.
558 <em>git-difftool</em> ignores the configured defaults and runs
559 <code>&lt;command&gt; $LOCAL $REMOTE</code> when this option is specified.
560 Additionally, <code>$BASE</code> is set in the environment.</p>
561 </dd>
562 <dt class="hdlist1">-g</dt>
563 <dt class="hdlist1">--[no-]gui</dt>
564 <dd>
565 <p>When <em>git-difftool</em> is invoked with the <code>-g</code> or <code>--gui</code> option
566 the default diff tool will be read from the configured
567 <code>diff.guitool</code> variable instead of <code>diff.tool</code>. This may be
568 selected automatically using the configuration variable
569 <code>difftool.guiDefault</code>. The <code>--no-gui</code> option can be used to
570 override these settings. If <code>diff.guitool</code> is not set, we will
571 fallback in the order of <code>merge.guitool</code>, <code>diff.tool</code>,
572 <code>merge.tool</code> until a tool is found.</p>
573 </dd>
574 <dt class="hdlist1">--[no-]trust-exit-code</dt>
575 <dd>
576 <p>Errors reported by the diff tool are ignored by default.
577 Use <code>--trust-exit-code</code> to make <em>git-difftool</em> exit when an
578 invoked diff tool returns a non-zero exit code.</p>
579 <div class="paragraph">
580 <p><em>git-difftool</em> will forward the exit code of the invoked tool when
581 <code>--trust-exit-code</code> is used.</p>
582 </div>
583 </dd>
584 </dl>
585 </div>
586 <div class="paragraph">
587 <p>See <a href="git-diff.html">git-diff(1)</a> for the full list of supported options.</p>
588 </div>
589 </div>
590 </div>
591 <div class="sect1">
592 <h2 id="_configuration">CONFIGURATION</h2>
593 <div class="sectionbody">
594 <div class="paragraph">
595 <p><em>git difftool</em> falls back to <em>git mergetool</em> config variables when the
596 difftool equivalents have not been defined.</p>
597 </div>
598 <div class="paragraph">
599 <p>Everything above this line in this section isn&#8217;t included from the
600 <a href="git-config.html">git-config(1)</a> documentation. The content that follows is the
601 same as what&#8217;s found there:</p>
602 </div>
603 <div class="dlist">
604 <dl>
605 <dt class="hdlist1">diff.tool</dt>
606 <dd>
607 <p>Controls which diff tool is used by <a href="git-difftool.html">git-difftool(1)</a>.
608 This variable overrides the value configured in <code>merge.tool</code>.
609 The list below shows the valid built-in values.
610 Any other value is treated as a custom diff tool and requires
611 that a corresponding difftool.&lt;tool&gt;.cmd variable is defined.</p>
612 </dd>
613 <dt class="hdlist1">diff.guitool</dt>
614 <dd>
615 <p>Controls which diff tool is used by <a href="git-difftool.html">git-difftool(1)</a> when
616 the -g/--gui flag is specified. This variable overrides the value
617 configured in <code>merge.guitool</code>. The list below shows the valid
618 built-in values. Any other value is treated as a custom diff tool
619 and requires that a corresponding difftool.&lt;guitool&gt;.cmd variable
620 is defined.</p>
621 </dd>
622 <dt class="hdlist1">difftool.&lt;tool&gt;.cmd</dt>
623 <dd>
624 <p>Specify the command to invoke the specified diff tool.
625 The specified command is evaluated in shell with the following
626 variables available: <em>LOCAL</em> is set to the name of the temporary
627 file containing the contents of the diff pre-image and <em>REMOTE</em>
628 is set to the name of the temporary file containing the contents
629 of the diff post-image.</p>
630 <div class="paragraph">
631 <p>See the <code>--tool=&lt;tool&gt;</code> option in <a href="git-difftool.html">git-difftool(1)</a> for more details.</p>
632 </div>
633 </dd>
634 <dt class="hdlist1">difftool.&lt;tool&gt;.path</dt>
635 <dd>
636 <p>Override the path for the given tool. This is useful in case
637 your tool is not in the PATH.</p>
638 </dd>
639 <dt class="hdlist1">difftool.trustExitCode</dt>
640 <dd>
641 <p>Exit difftool if the invoked diff tool returns a non-zero exit status.</p>
642 <div class="paragraph">
643 <p>See the <code>--trust-exit-code</code> option in <a href="git-difftool.html">git-difftool(1)</a> for more details.</p>
644 </div>
645 </dd>
646 <dt class="hdlist1">difftool.prompt</dt>
647 <dd>
648 <p>Prompt before each invocation of the diff tool.</p>
649 </dd>
650 <dt class="hdlist1">difftool.guiDefault</dt>
651 <dd>
652 <p>Set <code>true</code> to use the <code>diff.guitool</code> by default (equivalent to specifying
653 the <code>--gui</code> argument), or <code>auto</code> to select <code>diff.guitool</code> or <code>diff.tool</code>
654 depending on the presence of a <code>DISPLAY</code> environment variable value. The
655 default is <code>false</code>, where the <code>--gui</code> argument must be provided
656 explicitly for the <code>diff.guitool</code> to be used.</p>
657 </dd>
658 </dl>
659 </div>
660 </div>
661 </div>
662 <div class="sect1">
663 <h2 id="_see_also">SEE ALSO</h2>
664 <div class="sectionbody">
665 <div class="dlist">
666 <dl>
667 <dt class="hdlist1"><a href="git-diff.html">git-diff(1)</a></dt>
668 <dd>
669 <p>Show changes between commits, commit and working tree, etc</p>
670 </dd>
671 <dt class="hdlist1"><a href="git-mergetool.html">git-mergetool(1)</a></dt>
672 <dd>
673 <p>Run merge conflict resolution tools to resolve merge conflicts</p>
674 </dd>
675 <dt class="hdlist1"><a href="git-config.html">git-config(1)</a></dt>
676 <dd>
677 <p>Get and set repository or global options</p>
678 </dd>
679 </dl>
680 </div>
681 </div>
682 </div>
683 <div class="sect1">
684 <h2 id="_git">GIT</h2>
685 <div class="sectionbody">
686 <div class="paragraph">
687 <p>Part of the <a href="git.html">git(1)</a> suite</p>
688 </div>
689 </div>
690 </div>
691 </div>
692 <div id="footer">
693 <div id="footer-text">
694 Last updated 2024-03-01 17:30:58 -0800
695 </div>
696 </div>
697 </body>
698 </html>