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chromium / external / gitster / git-htmldocs / e1aeb5ef657d0c4fdff12a9c7503431edd9cd128 / . / technical / api-merge.html
blob: 331e4e0f3b3403674124dd1ae42b20630776a9e3 [file] [log] [blame]
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
4<head>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]5<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]6<meta name="generator" content="AsciiDoc 8.6.6" />
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]7<title>merge API</title>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]8<style type="text/css">
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]9/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
10
11/* Default font. */
12body {
13 font-family: Georgia,serif;
14}
15
16/* Title font. */
17h1, h2, h3, h4, h5, h6,
18div.title, caption.title,
19thead, p.table.header,
20#toctitle,
21#author, #revnumber, #revdate, #revremark,
22#footer {
23 font-family: Arial,Helvetica,sans-serif;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]24}
25
26body {
27 margin: 1em 5% 1em 5%;
28}
29
30a {
31 color: blue;
32 text-decoration: underline;
33}
34a:visited {
35 color: fuchsia;
36}
37
38em {
39 font-style: italic;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]40 color: navy;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]41}
42
43strong {
44 font-weight: bold;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]45 color: #083194;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]46}
47
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]48h1, h2, h3, h4, h5, h6 {
49 color: #527bbd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]50 margin-top: 1.2em;
51 margin-bottom: 0.5em;
52 line-height: 1.3;
53}
54
55h1, h2, h3 {
56 border-bottom: 2px solid silver;
57}
58h2 {
59 padding-top: 0.5em;
60}
61h3 {
62 float: left;
63}
64h3 + * {
65 clear: left;
66}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]67h5 {
68 font-size: 1.0em;
69}
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]70
71div.sectionbody {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]72 margin-left: 0;
73}
74
75hr {
76 border: 1px solid silver;
77}
78
79p {
80 margin-top: 0.5em;
81 margin-bottom: 0.5em;
82}
83
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]84ul, ol, li > p {
85 margin-top: 0;
86}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]87ul > li { color: #aaa; }
88ul > li > * { color: black; }
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]89
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]90pre {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]91 padding: 0;
92 margin: 0;
93}
94
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]95#author {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]96 color: #527bbd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]97 font-weight: bold;
98 font-size: 1.1em;
99}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]100#email {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]101}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]102#revnumber, #revdate, #revremark {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]103}
104
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]105#footer {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]106 font-size: small;
107 border-top: 2px solid silver;
108 padding-top: 0.5em;
109 margin-top: 4.0em;
110}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]111#footer-text {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]112 float: left;
113 padding-bottom: 0.5em;
114}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]115#footer-badges {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]116 float: right;
117 padding-bottom: 0.5em;
118}
119
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]120#preamble {
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]121 margin-top: 1.5em;
122 margin-bottom: 1.5em;
123}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]124div.imageblock, div.exampleblock, div.verseblock,
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]125div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
126div.admonitionblock {
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]127 margin-top: 1.0em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]128 margin-bottom: 1.5em;
129}
130div.admonitionblock {
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]131 margin-top: 2.0em;
132 margin-bottom: 2.0em;
133 margin-right: 10%;
134 color: #606060;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]135}
136
137div.content { /* Block element content. */
138 padding: 0;
139}
140
141/* Block element titles. */
142div.title, caption.title {
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]143 color: #527bbd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]144 font-weight: bold;
145 text-align: left;
146 margin-top: 1.0em;
147 margin-bottom: 0.5em;
148}
149div.title + * {
150 margin-top: 0;
151}
152
153td div.title:first-child {
154 margin-top: 0.0em;
155}
156div.content div.title:first-child {
157 margin-top: 0.0em;
158}
159div.content + div.title {
160 margin-top: 0.0em;
161}
162
163div.sidebarblock > div.content {
164 background: #ffffee;
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]165 border: 1px solid #dddddd;
166 border-left: 4px solid #f0f0f0;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]167 padding: 0.5em;
168}
169
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]170div.listingblock > div.content {
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]171 border: 1px solid #dddddd;
172 border-left: 5px solid #f0f0f0;
173 background: #f8f8f8;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]174 padding: 0.5em;
175}
176
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]177div.quoteblock, div.verseblock {
178 padding-left: 1.0em;
179 margin-left: 1.0em;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]180 margin-right: 10%;
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]181 border-left: 5px solid #f0f0f0;
182 color: #888;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]183}
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]184
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]185div.quoteblock > div.attribution {
186 padding-top: 0.5em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]187 text-align: right;
188}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]189
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]190div.verseblock > pre.content {
191 font-family: inherit;
192 font-size: inherit;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]193}
194div.verseblock > div.attribution {
195 padding-top: 0.75em;
196 text-align: left;
197}
198/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]199div.verseblock + div.attribution {
200 text-align: left;
201}
202
203div.admonitionblock .icon {
204 vertical-align: top;
205 font-size: 1.1em;
206 font-weight: bold;
207 text-decoration: underline;
208 color: #527bbd;
209 padding-right: 0.5em;
210}
211div.admonitionblock td.content {
212 padding-left: 0.5em;
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]213 border-left: 3px solid #dddddd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]214}
215
216div.exampleblock > div.content {
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]217 border-left: 3px solid #dddddd;
218 padding-left: 0.5em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]219}
220
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]221div.imageblock div.content { padding-left: 0; }
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]222span.image img { border-style: none; }
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]223a.image:visited { color: white; }
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]224
225dl {
226 margin-top: 0.8em;
227 margin-bottom: 0.8em;
228}
229dt {
230 margin-top: 0.5em;
231 margin-bottom: 0;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]232 font-style: normal;
233 color: navy;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]234}
235dd > *:first-child {
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]236 margin-top: 0.1em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]237}
238
239ul, ol {
240 list-style-position: outside;
241}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]242ol.arabic {
243 list-style-type: decimal;
244}
245ol.loweralpha {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]246 list-style-type: lower-alpha;
247}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]248ol.upperalpha {
249 list-style-type: upper-alpha;
250}
251ol.lowerroman {
252 list-style-type: lower-roman;
253}
254ol.upperroman {
255 list-style-type: upper-roman;
256}
257
258div.compact ul, div.compact ol,
259div.compact p, div.compact p,
260div.compact div, div.compact div {
261 margin-top: 0.1em;
262 margin-bottom: 0.1em;
263}
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]264
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]265tfoot {
266 font-weight: bold;
267}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]268td > div.verse {
269 white-space: pre;
270}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]271
272div.hdlist {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]273 margin-top: 0.8em;
274 margin-bottom: 0.8em;
275}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]276div.hdlist tr {
277 padding-bottom: 15px;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]278}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]279dt.hdlist1.strong, td.hdlist1.strong {
280 font-weight: bold;
281}
282td.hdlist1 {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]283 vertical-align: top;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]284 font-style: normal;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]285 padding-right: 0.8em;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]286 color: navy;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]287}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]288td.hdlist2 {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]289 vertical-align: top;
290}
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]291div.hdlist.compact tr {
292 margin: 0;
293 padding-bottom: 0;
294}
295
296.comment {
297 background: yellow;
298}
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]299
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]300.footnote, .footnoteref {
301 font-size: 0.8em;
302}
303
304span.footnote, span.footnoteref {
305 vertical-align: super;
306}
307
308#footnotes {
309 margin: 20px 0 20px 0;
310 padding: 7px 0 0 0;
311}
312
313#footnotes div.footnote {
314 margin: 0 0 5px 0;
315}
316
317#footnotes hr {
318 border: none;
319 border-top: 1px solid silver;
320 height: 1px;
321 text-align: left;
322 margin-left: 0;
323 width: 20%;
324 min-width: 100px;
325}
326
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]327div.colist td {
328 padding-right: 0.5em;
329 padding-bottom: 0.3em;
330 vertical-align: top;
331}
332div.colist td img {
333 margin-top: 0.3em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]334}
335
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]336@media print {
337 #footer-badges { display: none; }
338}
339
340#toc {
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]341 margin-bottom: 2.5em;
342}
343
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]344#toctitle {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]345 color: #527bbd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]346 font-size: 1.1em;
347 font-weight: bold;
348 margin-top: 1.0em;
349 margin-bottom: 0.1em;
350}
351
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]352div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]353 margin-top: 0;
354 margin-bottom: 0;
355}
356div.toclevel2 {
357 margin-left: 2em;
358 font-size: 0.9em;
359}
360div.toclevel3 {
361 margin-left: 4em;
362 font-size: 0.9em;
363}
364div.toclevel4 {
365 margin-left: 6em;
366 font-size: 0.9em;
367}
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]368
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]369span.aqua { color: aqua; }
370span.black { color: black; }
371span.blue { color: blue; }
372span.fuchsia { color: fuchsia; }
373span.gray { color: gray; }
374span.green { color: green; }
375span.lime { color: lime; }
376span.maroon { color: maroon; }
377span.navy { color: navy; }
378span.olive { color: olive; }
379span.purple { color: purple; }
380span.red { color: red; }
381span.silver { color: silver; }
382span.teal { color: teal; }
383span.white { color: white; }
384span.yellow { color: yellow; }
385
386span.aqua-background { background: aqua; }
387span.black-background { background: black; }
388span.blue-background { background: blue; }
389span.fuchsia-background { background: fuchsia; }
390span.gray-background { background: gray; }
391span.green-background { background: green; }
392span.lime-background { background: lime; }
393span.maroon-background { background: maroon; }
394span.navy-background { background: navy; }
395span.olive-background { background: olive; }
396span.purple-background { background: purple; }
397span.red-background { background: red; }
398span.silver-background { background: silver; }
399span.teal-background { background: teal; }
400span.white-background { background: white; }
401span.yellow-background { background: yellow; }
402
403span.big { font-size: 2em; }
404span.small { font-size: 0.6em; }
405
406span.underline { text-decoration: underline; }
407span.overline { text-decoration: overline; }
408span.line-through { text-decoration: line-through; }
409
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]410
411/*
412 * xhtml11 specific
413 *
414 * */
415
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]416tt {
417 font-family: monospace;
418 font-size: inherit;
419 color: navy;
420}
421
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]422div.tableblock {
423 margin-top: 1.0em;
424 margin-bottom: 1.5em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]425}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]426div.tableblock > table {
427 border: 3px solid #527bbd;
428}
429thead, p.table.header {
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]430 font-weight: bold;
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]431 color: #527bbd;
432}
433p.table {
434 margin-top: 0;
435}
436/* Because the table frame attribute is overriden by CSS in most browsers. */
437div.tableblock > table[frame="void"] {
438 border-style: none;
439}
440div.tableblock > table[frame="hsides"] {
441 border-left-style: none;
442 border-right-style: none;
443}
444div.tableblock > table[frame="vsides"] {
445 border-top-style: none;
446 border-bottom-style: none;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]447}
448
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]449
450/*
451 * html5 specific
452 *
453 * */
454
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]455.monospaced {
456 font-family: monospace;
457 font-size: inherit;
458 color: navy;
459}
460
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]461table.tableblock {
462 margin-top: 1.0em;
463 margin-bottom: 1.5em;
464}
465thead, p.tableblock.header {
466 font-weight: bold;
467 color: #527bbd;
468}
469p.tableblock {
470 margin-top: 0;
471}
472table.tableblock {
473 border-width: 3px;
474 border-spacing: 0px;
475 border-style: solid;
476 border-color: #527bbd;
477 border-collapse: collapse;
478}
479th.tableblock, td.tableblock {
480 border-width: 1px;
481 padding: 4px;
482 border-style: solid;
483 border-color: #527bbd;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]484}
485
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]486table.tableblock.frame-topbot {
487 border-left-style: hidden;
488 border-right-style: hidden;
489}
490table.tableblock.frame-sides {
491 border-top-style: hidden;
492 border-bottom-style: hidden;
493}
494table.tableblock.frame-none {
495 border-style: hidden;
496}
497
498th.tableblock.halign-left, td.tableblock.halign-left {
499 text-align: left;
500}
501th.tableblock.halign-center, td.tableblock.halign-center {
502 text-align: center;
503}
504th.tableblock.halign-right, td.tableblock.halign-right {
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]505 text-align: right;
506}
507
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]508th.tableblock.valign-top, td.tableblock.valign-top {
509 vertical-align: top;
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]510}
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]511th.tableblock.valign-middle, td.tableblock.valign-middle {
512 vertical-align: middle;
513}
514th.tableblock.valign-bottom, td.tableblock.valign-bottom {
515 vertical-align: bottom;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]516}
517
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]518
519/*
520 * manpage specific
521 *
522 * */
523
524body.manpage h1 {
525 padding-top: 0.5em;
526 padding-bottom: 0.5em;
527 border-top: 2px solid silver;
528 border-bottom: 2px solid silver;
529}
530body.manpage h2 {
531 border-style: none;
532}
533body.manpage div.sectionbody {
534 margin-left: 3em;
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]535}
536
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]537@media print {
538 body.manpage div#toc { display: none; }
539}
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Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]735</head>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]736<body class="article">
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]737<div id="header">
738<h1>merge API</h1>
739</div>
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]740<div id="content">
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]741<div id="preamble">
742<div class="sectionbody">
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]743<div class="paragraph"><p>The merge API helps a program to reconcile two competing sets of
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]744improvements to some files (e.g., unregistered changes from the work
745tree versus changes involved in switching to a new branch), reporting
746conflicts if found. The library called through this API is
747responsible for a few things.</p></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]748<div class="ulist"><ul>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]749<li>
750<p>
751determining which trees to merge (recursive ancestor consolidation);
752</p>
753</li>
754<li>
755<p>
756lining up corresponding files in the trees to be merged (rename
757 detection, subtree shifting), reporting edge cases like add/add
758 and rename/rename conflicts to the user;
759</p>
760</li>
761<li>
762<p>
763performing a three-way merge of corresponding files, taking
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]764 path-specific merge drivers (specified in <tt>.gitattributes</tt>)
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]765 into account.
766</p>
767</li>
768</ul></div>
769</div>
770</div>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]771<div class="sect1">
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]772<h2 id="_data_structures">Data structures</h2>
773<div class="sectionbody">
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]774<div class="ulist"><ul>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]775<li>
776<p>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]777<tt>mmbuffer_t</tt>, <tt>mmfile_t</tt>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]778</p>
779</li>
780</ul></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]781<div class="paragraph"><p>These store data usable for use by the xdiff backend, for writing and
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]782for reading, respectively. See <tt>xdiff/xdiff.h</tt> for the definitions
783and <tt>diff.c</tt> for examples.</p></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]784<div class="ulist"><ul>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]785<li>
786<p>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]787<tt>struct ll_merge_options</tt>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]788</p>
789</li>
790</ul></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]791<div class="paragraph"><p>This describes the set of options the calling program wants to affect
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]792the operation of a low-level (single file) merge. Some options:</p></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]793<div class="dlist"><dl>
794<dt class="hdlist1">
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]795<tt>virtual_ancestor</tt>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]796</dt>
797<dd>
798<p>
799 Behave as though this were part of a merge between common
800 ancestors in a recursive merge.
801 If a helper program is specified by the
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]802 <tt>[merge "&lt;driver&gt;"] recursive</tt> configuration, it will
Junio C Hamano719b8a32012-06-08 18:40:53[diff] [blame]803 be used (see <a href="../gitattributes.html">gitattributes(5)</a>).
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]804</p>
805</dd>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]806<dt class="hdlist1">
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]807<tt>variant</tt>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]808</dt>
809<dd>
810<p>
811 Resolve local conflicts automatically in favor
812 of one side or the other (as in <em>git merge-file</em>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]813 <tt>--ours</tt>/<tt>--theirs</tt>/<tt>--union</tt>). Can be <tt>0</tt>,
814 <tt>XDL_MERGE_FAVOR_OURS</tt>, <tt>XDL_MERGE_FAVOR_THEIRS</tt>, or
815 <tt>XDL_MERGE_FAVOR_UNION</tt>.
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]816</p>
817</dd>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]818<dt class="hdlist1">
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]819<tt>renormalize</tt>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]820</dt>
821<dd>
822<p>
823 Resmudge and clean the "base", "theirs" and "ours" files
824 before merging. Use this when the merge is likely to have
825 overlapped with a change in smudge/clean or end-of-line
826 normalization rules.
827</p>
828</dd>
829</dl></div>
830</div>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]831</div>
832<div class="sect1">
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]833<h2 id="_low_level_single_file_merge">Low-level (single file) merge</h2>
834<div class="sectionbody">
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]835<div class="dlist"><dl>
836<dt class="hdlist1">
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]837<tt>ll_merge</tt>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]838</dt>
839<dd>
840<p>
841 Perform a three-way single-file merge in core. This is
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]842 a thin wrapper around <tt>xdl_merge</tt> that takes the path and
843 any merge backend specified in <tt>.gitattributes</tt> or
844 <tt>.git/info/attributes</tt> into account. Returns 0 for a
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]845 clean merge.
846</p>
847</dd>
848</dl></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]849<div class="paragraph"><p>Calling sequence:</p></div>
850<div class="ulist"><ul>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]851<li>
852<p>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]853Prepare a <tt>struct ll_merge_options</tt> to record options.
854 If you have no special requests, skip this and pass <tt>NULL</tt>
855 as the <tt>opts</tt> parameter to use the default options.
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]856</p>
857</li>
858<li>
859<p>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]860Allocate an mmbuffer_t variable for the result.
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]861</p>
862</li>
863<li>
864<p>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]865Allocate and fill variables with the file&#8217;s original content
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]866 and two modified versions (using <tt>read_mmfile</tt>, for example).
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]867</p>
868</li>
869<li>
870<p>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]871Call <tt>ll_merge()</tt>.
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]872</p>
873</li>
874<li>
875<p>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]876Read the merged content from <tt>result_buf.ptr</tt> and <tt>result_buf.size</tt>.
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]877</p>
878</li>
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]879<li>
880<p>
881Release buffers when finished. A simple
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]882 <tt>free(ancestor.ptr); free(ours.ptr); free(theirs.ptr);
883 free(result_buf.ptr);</tt> will do.
Junio C Hamano39c7a692010-10-27 06:08:54[diff] [blame]884</p>
885</li>
886</ul></div>
Junio C Hamano61525f92014-01-17 22:46:49[diff] [blame]887<div class="paragraph"><p>If the modifications do not merge cleanly, <tt>ll_merge</tt> will return a
888nonzero value and <tt>result_buf</tt> will generally include a description of
889the conflict bracketed by markers such as the traditional <tt>&lt;&lt;&lt;&lt;&lt;&lt;&lt;</tt>
890and <tt>&gt;&gt;&gt;&gt;&gt;&gt;&gt;</tt>.</p></div>
891<div class="paragraph"><p>The <tt>ancestor_label</tt>, <tt>our_label</tt>, and <tt>their_label</tt> parameters are
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]892used to label the different sides of a conflict if the merge driver
893supports this.</p></div>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]894</div>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]895</div>
896<div class="sect1">
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]897<h2 id="_everything_else">Everything else</h2>
898<div class="sectionbody">
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]899<div class="paragraph"><p>Talk about &lt;merge-recursive.h&gt; and merge_file():</p></div>
900<div class="ulist"><ul>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]901<li>
902<p>
903merge_trees() to merge with rename detection
904</p>
905</li>
906<li>
907<p>
908merge_recursive() for ancestor consolidation
909</p>
910</li>
911<li>
912<p>
913try_merge_command() for other strategies
914</p>
915</li>
916<li>
917<p>
918conflict format
919</p>
920</li>
921<li>
922<p>
923merge options
924</p>
925</li>
926</ul></div>
Junio C Hamano68cf15a2010-11-06 01:01:59[diff] [blame]927<div class="paragraph"><p>(Daniel, Miklos, Stephan, JC)</p></div>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]928</div>
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]929</div>
Junio C Hamano9d971152012-12-19 00:43:11[diff] [blame]930</div>
Junio C Hamano7bd050f2011-09-22 06:32:22[diff] [blame]931<div id="footnotes"><hr /></div>
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]932<div id="footer">
933<div id="footer-text">
Junio C Hamano683a8612013-08-23 20:50:09[diff] [blame]934Last updated 2013-08-20 08:40:27 PDT
Junio C Hamano2db3e752010-09-03 21:33:06[diff] [blame]935</div>
936</div>
937</body>
938</html>