git-merge-file.html

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 442 <div id="header">
 443 <h1>git-merge-file(1) Manual Page</h1>
 444 <h2 id="_name">NAME</h2>
 445 <div class="sectionbody">
 446 <p>git-merge-file - Run a three-way file merge</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 merge-file</em> [-L &lt;current-name&gt; [-L &lt;base-name&gt; [-L &lt;other-name&gt;]]]
 455         [--ours|--theirs|--union] [-p|--stdout] [-q|--quiet] [--marker-size=&lt;n&gt;]
 456         [--[no-]diff3] [--object-id] &lt;current&gt; &lt;base&gt; &lt;other&gt;</pre>
 457 </div>
 458 </div>
 459 </div>
 460 <div class="sect1">
 461 <h2 id="_description">DESCRIPTION</h2>
 462 <div class="sectionbody">
 463 <div class="paragraph">
 464 <p>Given three files <em>&lt;current&gt;</em>, <em>&lt;base&gt;</em> and <em>&lt;other&gt;</em>,
 465 <em>git merge-file</em> incorporates all changes that lead from <em>&lt;base&gt;</em>
 466 to <em>&lt;other&gt;</em> into <em>&lt;current&gt;</em>. The result ordinarily goes into
 467 <em>&lt;current&gt;</em>. <em>git merge-file</em> is useful for combining separate changes
 468 to an original. Suppose <em>&lt;base&gt;</em> is the original, and both
 469 <em>&lt;current&gt;</em> and <em>&lt;other&gt;</em> are modifications of <em>&lt;base&gt;</em>,
 470 then <em>git merge-file</em> combines both changes.</p>
 471 </div>
 472 <div class="paragraph">
 473 <p>A conflict occurs if both <em>&lt;current&gt;</em> and <em>&lt;other&gt;</em> have changes
 474 in a common segment of lines. If a conflict is found, <em>git merge-file</em>
 475 normally outputs a warning and brackets the conflict with lines containing
 476 &lt;&lt;&lt;&lt;&lt;&lt;&lt; and &gt;&gt;&gt;&gt;&gt;&gt;&gt; markers. A typical conflict will look like this:</p>
 477 </div>
 478 <div class="literalblock">
 479 <div class="content">
 480 <pre>&lt;&lt;&lt;&lt;&lt;&lt;&lt; A
 481 lines in file A
 482 =======
 483 lines in file B
 484 &gt;&gt;&gt;&gt;&gt;&gt;&gt; B</pre>
 485 </div>
 486 </div>
 487 <div class="paragraph">
 488 <p>If there are conflicts, the user should edit the result and delete one of
 489 the alternatives.  When <code>--ours</code>, <code>--theirs</code>, or <code>--union</code> option is in effect,
 490 however, these conflicts are resolved favouring lines from <em>&lt;current&gt;</em>,
 491 lines from <em>&lt;other&gt;</em>, or lines from both respectively.  The length of the
 492 conflict markers can be given with the <code>--marker-size</code> option.</p>
 493 </div>
 494 <div class="paragraph">
 495 <p>If <code>--object-id</code> is specified, exactly the same behavior occurs, except that
 496 instead of specifying what to merge as files, it is specified as a list of
 497 object IDs referring to blobs.</p>
 498 </div>
 499 <div class="paragraph">
 500 <p>The exit value of this program is negative on error, and the number of
 501 conflicts otherwise (truncated to 127 if there are more than that many
 502 conflicts). If the merge was clean, the exit value is 0.</p>
 503 </div>
 504 <div class="paragraph">
 505 <p><em>git merge-file</em> is designed to be a minimal clone of RCS <em>merge</em>; that is, it
 506 implements all of RCS <em>merge</em>'s functionality which is needed by
 507 <a href="git.html">git(1)</a>.</p>
 508 </div>
 509 </div>
 510 </div>
 511 <div class="sect1">
 512 <h2 id="_options">OPTIONS</h2>
 513 <div class="sectionbody">
 514 <div class="dlist">
 515 <dl>
 516 <dt class="hdlist1">--object-id</dt>
 517 <dd>
 518 <p>Specify the contents to merge as blobs in the current repository instead of
 519 files.  In this case, the operation must take place within a valid repository.</p>
 520 <div class="paragraph">
 521 <p>If the <code>-p</code> option is specified, the merged file (including conflicts, if any)
 522 goes to standard output as normal; otherwise, the merged file is written to the
 523 object store and the object ID of its blob is written to standard output.</p>
 524 </div>
 525 </dd>
 526 <dt class="hdlist1">-L &lt;label&gt;</dt>
 527 <dd>
 528 <p>This option may be given up to three times, and
 529 specifies labels to be used in place of the
 530 corresponding file names in conflict reports. That is,
 531 <code>git</code> <code>merge-file</code> <code>-L</code> <code>x</code> <code>-L</code> <code>y</code> <code>-L</code> <code>z</code> <code>a</code> <code>b</code> <code>c</code> generates output that
 532 looks like it came from files x, y and z instead of
 533 from files a, b and c.</p>
 534 </dd>
 535 <dt class="hdlist1">-p</dt>
 536 <dd>
 537 <p>Send results to standard output instead of overwriting
 538 <em>&lt;current&gt;</em>.</p>
 539 </dd>
 540 <dt class="hdlist1">-q</dt>
 541 <dd>
 542 <p>Quiet; do not warn about conflicts.</p>
 543 </dd>
 544 <dt class="hdlist1">--diff3</dt>
 545 <dd>
 546 <p>Show conflicts in "diff3" style.</p>
 547 </dd>
 548 <dt class="hdlist1">--zdiff3</dt>
 549 <dd>
 550 <p>Show conflicts in "zdiff3" style.</p>
 551 </dd>
 552 <dt class="hdlist1">--ours</dt>
 553 <dt class="hdlist1">--theirs</dt>
 554 <dt class="hdlist1">--union</dt>
 555 <dd>
 556 <p>Instead of leaving conflicts in the file, resolve conflicts
 557 favouring our (or their or both) side of the lines.</p>
 558 </dd>
 559 <dt class="hdlist1">--diff-algorithm={patience|minimal|histogram|myers}</dt>
 560 <dd>
 561 <p>Use a different diff algorithm while merging. The current default is "myers",
 562 but selecting more recent algorithm such as "histogram" can help
 563 avoid mismerges that occur due to unimportant matching lines
 564 (such as braces from distinct functions). See also
 565 <a href="git-diff.html">git-diff(1)</a> <code>--diff-algorithm</code>.</p>
 566 </dd>
 567 </dl>
 568 </div>
 569 </div>
 570 </div>
 571 <div class="sect1">
 572 <h2 id="_examples">EXAMPLES</h2>
 573 <div class="sectionbody">
 574 <div class="dlist">
 575 <dl>
 576 <dt class="hdlist1"><code>git</code> <code>merge-file</code> <code>README.my</code> <code>README</code> <code>README.upstream</code></dt>
 577 <dd>
 578 <p>combines the changes of README.my and README.upstream since README,
 579 tries to merge them and writes the result into README.my.</p>
 580 </dd>
 581 <dt class="hdlist1"><code>git</code> <code>merge-file</code> <code>-L</code> <code>a</code> <code>-L</code> <code>b</code> <code>-L</code> <code>c</code> <code>tmp/a123</code> <code>tmp/b234</code> <code>tmp/c345</code></dt>
 582 <dd>
 583 <p>merges tmp/a123 and tmp/c345 with the base tmp/b234, but uses labels
 584 <code>a</code> and <code>c</code> instead of <code>tmp/a123</code> and <code>tmp/c345</code>.</p>
 585 </dd>
 586 <dt class="hdlist1"><code>git</code> <code>merge-file</code> <code>-p</code> <code>--object-id</code> <code>abc1234</code> <code>def567</code> <code>890abcd</code></dt>
 587 <dd>
 588 <p>combines the changes of the blob abc1234 and 890abcd since def567,
 589 tries to merge them and writes the result to standard output</p>
 590 </dd>
 591 </dl>
 592 </div>
 593 </div>
 594 </div>
 595 <div class="sect1">
 596 <h2 id="_git">GIT</h2>
 597 <div class="sectionbody">
 598 <div class="paragraph">
 599 <p>Part of the <a href="git.html">git(1)</a> suite</p>
 600 </div>
 601 </div>
 602 </div>
 603 </div>
 604 <div id="footer">
 605 <div id="footer-text">
 606 Last updated 2023-12-18 14:49:41 -0800
 607 </div>
 608 </div>
 609 </body>
 610 </html>