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737 <h1>
738 git-diff-files(1) Manual Page
739 </h1>
740 <h2>NAME</h2>
741 <div class="sectionbody">
742 <p>git-diff-files -
743 Compares files in the working tree and the index
744 </p>
745 </div>
746 </div>
747 <div id="content">
748 <div class="sect1">
749 <h2 id="_synopsis">SYNOPSIS</h2>
750 <div class="sectionbody">
751 <div class="verseblock">
752 <pre class="content"><em>git diff-files</em> [-q] [-0 | -1 | -2 | -3 | -c | --cc] [&lt;common-diff-options&gt;] [&lt;path&gt;&#8230;]</pre>
753 <div class="attribution">
754 </div></div>
755 </div>
756 </div>
757 <div class="sect1">
758 <h2 id="_description">DESCRIPTION</h2>
759 <div class="sectionbody">
760 <div class="paragraph"><p>Compares the files in the working tree and the index. When paths
761 are specified, compares only those named paths. Otherwise all
762 entries in the index are compared. The output format is the
763 same as for <em>git diff-index</em> and <em>git diff-tree</em>.</p></div>
764 </div>
765 </div>
766 <div class="sect1">
767 <h2 id="_options">OPTIONS</h2>
768 <div class="sectionbody">
769 <div class="dlist"><dl>
770 <dt class="hdlist1">
772 </dt>
773 <dt class="hdlist1">
775 </dt>
776 <dt class="hdlist1">
777 --patch
778 </dt>
779 <dd>
781 Generate patch (see <a href="#generate_patch_text_with_p">[generate_patch_text_with_p]</a>).
782 </p>
783 </dd>
784 <dt class="hdlist1">
786 </dt>
787 <dt class="hdlist1">
788 --no-patch
789 </dt>
790 <dd>
792 Suppress all output from the diff machinery. Useful for
793 commands like <code>git show</code> that show the patch by default to
794 squelch their output, or to cancel the effect of options like
795 <code>--patch</code>, <code>--stat</code> earlier on the command line in an alias.
796 </p>
797 </dd>
798 <dt class="hdlist1">
799 -U&lt;n&gt;
800 </dt>
801 <dt class="hdlist1">
802 --unified=&lt;n&gt;
803 </dt>
804 <dd>
806 Generate diffs with &lt;n&gt; lines of context instead of
807 the usual three.
808 Implies <code>--patch</code>.
809 </p>
810 </dd>
811 <dt class="hdlist1">
812 --output=&lt;file&gt;
813 </dt>
814 <dd>
816 Output to a specific file instead of stdout.
817 </p>
818 </dd>
819 <dt class="hdlist1">
820 --output-indicator-new=&lt;char&gt;
821 </dt>
822 <dt class="hdlist1">
823 --output-indicator-old=&lt;char&gt;
824 </dt>
825 <dt class="hdlist1">
826 --output-indicator-context=&lt;char&gt;
827 </dt>
828 <dd>
830 Specify the character used to indicate new, old or context
831 lines in the generated patch. Normally they are <em>+</em>, <em>-</em> and
832 ' ' respectively.
833 </p>
834 </dd>
835 <dt class="hdlist1">
836 --raw
837 </dt>
838 <dd>
840 Generate the diff in raw format.
841 This is the default.
842 </p>
843 </dd>
844 <dt class="hdlist1">
845 --patch-with-raw
846 </dt>
847 <dd>
849 Synonym for <code>-p --raw</code>.
850 </p>
851 </dd>
852 <dt class="hdlist1">
853 --indent-heuristic
854 </dt>
855 <dd>
857 Enable the heuristic that shifts diff hunk boundaries to make patches
858 easier to read. This is the default.
859 </p>
860 </dd>
861 <dt class="hdlist1">
862 --no-indent-heuristic
863 </dt>
864 <dd>
866 Disable the indent heuristic.
867 </p>
868 </dd>
869 <dt class="hdlist1">
870 --minimal
871 </dt>
872 <dd>
874 Spend extra time to make sure the smallest possible
875 diff is produced.
876 </p>
877 </dd>
878 <dt class="hdlist1">
879 --patience
880 </dt>
881 <dd>
883 Generate a diff using the "patience diff" algorithm.
884 </p>
885 </dd>
886 <dt class="hdlist1">
887 --histogram
888 </dt>
889 <dd>
891 Generate a diff using the "histogram diff" algorithm.
892 </p>
893 </dd>
894 <dt class="hdlist1">
895 --anchored=&lt;text&gt;
896 </dt>
897 <dd>
899 Generate a diff using the "anchored diff" algorithm.
900 </p>
901 <div class="paragraph"><p>This option may be specified more than once.</p></div>
902 <div class="paragraph"><p>If a line exists in both the source and destination, exists only once,
903 and starts with this text, this algorithm attempts to prevent it from
904 appearing as a deletion or addition in the output. It uses the "patience
905 diff" algorithm internally.</p></div>
906 </dd>
907 <dt class="hdlist1">
908 --diff-algorithm={patience|minimal|histogram|myers}
909 </dt>
910 <dd>
912 Choose a diff algorithm. The variants are as follows:
913 </p>
914 <div class="openblock">
915 <div class="content">
916 <div class="dlist"><dl>
917 <dt class="hdlist1">
918 <code>default</code>, <code>myers</code>
919 </dt>
920 <dd>
922 The basic greedy diff algorithm. Currently, this is the default.
923 </p>
924 </dd>
925 <dt class="hdlist1">
926 <code>minimal</code>
927 </dt>
928 <dd>
930 Spend extra time to make sure the smallest possible diff is
931 produced.
932 </p>
933 </dd>
934 <dt class="hdlist1">
935 <code>patience</code>
936 </dt>
937 <dd>
939 Use "patience diff" algorithm when generating patches.
940 </p>
941 </dd>
942 <dt class="hdlist1">
943 <code>histogram</code>
944 </dt>
945 <dd>
947 This algorithm extends the patience algorithm to "support
948 low-occurrence common elements".
949 </p>
950 </dd>
951 </dl></div>
952 </div></div>
953 <div class="paragraph"><p>For instance, if you configured the <code>diff.algorithm</code> variable to a
954 non-default value and want to use the default one, then you
955 have to use <code>--diff-algorithm=default</code> option.</p></div>
956 </dd>
957 <dt class="hdlist1">
958 --stat[=&lt;width&gt;[,&lt;name-width&gt;[,&lt;count&gt;]]]
959 </dt>
960 <dd>
962 Generate a diffstat. By default, as much space as necessary
963 will be used for the filename part, and the rest for the graph
964 part. Maximum width defaults to terminal width, or 80 columns
965 if not connected to a terminal, and can be overridden by
966 <code>&lt;width&gt;</code>. The width of the filename part can be limited by
967 giving another width <code>&lt;name-width&gt;</code> after a comma or by setting
968 <code>diff.statNameWidth=&lt;width&gt;</code>. The width of the graph part can be
969 limited by using <code>--stat-graph-width=&lt;width&gt;</code> or by setting
970 <code>diff.statGraphWidth=&lt;width&gt;</code>. Using <code>--stat</code> or
971 <code>--stat-graph-width</code> affects all commands generating a stat graph,
972 while setting <code>diff.statNameWidth</code> or <code>diff.statGraphWidth</code>
973 does not affect <code>git format-patch</code>.
974 By giving a third parameter <code>&lt;count&gt;</code>, you can limit the output to
975 the first <code>&lt;count&gt;</code> lines, followed by <code>...</code> if there are more.
976 </p>
977 <div class="paragraph"><p>These parameters can also be set individually with <code>--stat-width=&lt;width&gt;</code>,
978 <code>--stat-name-width=&lt;name-width&gt;</code> and <code>--stat-count=&lt;count&gt;</code>.</p></div>
979 </dd>
980 <dt class="hdlist1">
981 --compact-summary
982 </dt>
983 <dd>
985 Output a condensed summary of extended header information such
986 as file creations or deletions ("new" or "gone", optionally "+l"
987 if it&#8217;s a symlink) and mode changes ("+x" or "-x" for adding
988 or removing executable bit respectively) in diffstat. The
989 information is put between the filename part and the graph
990 part. Implies <code>--stat</code>.
991 </p>
992 </dd>
993 <dt class="hdlist1">
994 --numstat
995 </dt>
996 <dd>
998 Similar to <code>--stat</code>, but shows number of added and
999 deleted lines in decimal notation and pathname without
1000 abbreviation, to make it more machine friendly. For
1001 binary files, outputs two <code>-</code> instead of saying
1002 <code>0 0</code>.
1003 </p>
1004 </dd>
1005 <dt class="hdlist1">
1006 --shortstat
1007 </dt>
1008 <dd>
1010 Output only the last line of the <code>--stat</code> format containing total
1011 number of modified files, as well as number of added and deleted
1012 lines.
1013 </p>
1014 </dd>
1015 <dt class="hdlist1">
1016 -X[&lt;param1,param2,&#8230;&gt;]
1017 </dt>
1018 <dt class="hdlist1">
1019 --dirstat[=&lt;param1,param2,&#8230;&gt;]
1020 </dt>
1021 <dd>
1023 Output the distribution of relative amount of changes for each
1024 sub-directory. The behavior of <code>--dirstat</code> can be customized by
1025 passing it a comma separated list of parameters.
1026 The defaults are controlled by the <code>diff.dirstat</code> configuration
1027 variable (see <a href="git-config.html">git-config(1)</a>).
1028 The following parameters are available:
1029 </p>
1030 <div class="openblock">
1031 <div class="content">
1032 <div class="dlist"><dl>
1033 <dt class="hdlist1">
1034 <code>changes</code>
1035 </dt>
1036 <dd>
1038 Compute the dirstat numbers by counting the lines that have been
1039 removed from the source, or added to the destination. This ignores
1040 the amount of pure code movements within a file. In other words,
1041 rearranging lines in a file is not counted as much as other changes.
1042 This is the default behavior when no parameter is given.
1043 </p>
1044 </dd>
1045 <dt class="hdlist1">
1046 <code>lines</code>
1047 </dt>
1048 <dd>
1050 Compute the dirstat numbers by doing the regular line-based diff
1051 analysis, and summing the removed/added line counts. (For binary
1052 files, count 64-byte chunks instead, since binary files have no
1053 natural concept of lines). This is a more expensive <code>--dirstat</code>
1054 behavior than the <code>changes</code> behavior, but it does count rearranged
1055 lines within a file as much as other changes. The resulting output
1056 is consistent with what you get from the other <code>--*stat</code> options.
1057 </p>
1058 </dd>
1059 <dt class="hdlist1">
1060 <code>files</code>
1061 </dt>
1062 <dd>
1064 Compute the dirstat numbers by counting the number of files changed.
1065 Each changed file counts equally in the dirstat analysis. This is
1066 the computationally cheapest <code>--dirstat</code> behavior, since it does
1067 not have to look at the file contents at all.
1068 </p>
1069 </dd>
1070 <dt class="hdlist1">
1071 <code>cumulative</code>
1072 </dt>
1073 <dd>
1075 Count changes in a child directory for the parent directory as well.
1076 Note that when using <code>cumulative</code>, the sum of the percentages
1077 reported may exceed 100%. The default (non-cumulative) behavior can
1078 be specified with the <code>noncumulative</code> parameter.
1079 </p>
1080 </dd>
1081 <dt class="hdlist1">
1082 &lt;limit&gt;
1083 </dt>
1084 <dd>
1086 An integer parameter specifies a cut-off percent (3% by default).
1087 Directories contributing less than this percentage of the changes
1088 are not shown in the output.
1089 </p>
1090 </dd>
1091 </dl></div>
1092 </div></div>
1093 <div class="paragraph"><p>Example: The following will count changed files, while ignoring
1094 directories with less than 10% of the total amount of changed files,
1095 and accumulating child directory counts in the parent directories:
1096 <code>--dirstat=files,10,cumulative</code>.</p></div>
1097 </dd>
1098 <dt class="hdlist1">
1099 --cumulative
1100 </dt>
1101 <dd>
1103 Synonym for --dirstat=cumulative
1104 </p>
1105 </dd>
1106 <dt class="hdlist1">
1107 --dirstat-by-file[=&lt;param1,param2&gt;&#8230;]
1108 </dt>
1109 <dd>
1111 Synonym for --dirstat=files,&lt;param1&gt;,&lt;param2&gt;&#8230;
1112 </p>
1113 </dd>
1114 <dt class="hdlist1">
1115 --summary
1116 </dt>
1117 <dd>
1119 Output a condensed summary of extended header information
1120 such as creations, renames and mode changes.
1121 </p>
1122 </dd>
1123 <dt class="hdlist1">
1124 --patch-with-stat
1125 </dt>
1126 <dd>
1128 Synonym for <code>-p --stat</code>.
1129 </p>
1130 </dd>
1131 <dt class="hdlist1">
1133 </dt>
1134 <dd>
1136 When <code>--raw</code>, <code>--numstat</code>, <code>--name-only</code> or <code>--name-status</code> has been
1137 given, do not munge pathnames and use NULs as output field terminators.
1138 </p>
1139 <div class="paragraph"><p>Without this option, pathnames with "unusual" characters are quoted as
1140 explained for the configuration variable <code>core.quotePath</code> (see
1141 <a href="git-config.html">git-config(1)</a>).</p></div>
1142 </dd>
1143 <dt class="hdlist1">
1144 --name-only
1145 </dt>
1146 <dd>
1148 Show only the name of each changed file in the post-image tree.
1149 The file names are often encoded in UTF-8.
1150 For more information see the discussion about encoding in the <a href="git-log.html">git-log(1)</a>
1151 manual page.
1152 </p>
1153 </dd>
1154 <dt class="hdlist1">
1155 --name-status
1156 </dt>
1157 <dd>
1159 Show only the name(s) and status of each changed file. See the description
1160 of the <code>--diff-filter</code> option on what the status letters mean.
1161 Just like <code>--name-only</code> the file names are often encoded in UTF-8.
1162 </p>
1163 </dd>
1164 <dt class="hdlist1">
1165 --submodule[=&lt;format&gt;]
1166 </dt>
1167 <dd>
1169 Specify how differences in submodules are shown. When specifying
1170 <code>--submodule=short</code> the <em>short</em> format is used. This format just
1171 shows the names of the commits at the beginning and end of the range.
1172 When <code>--submodule</code> or <code>--submodule=log</code> is specified, the <em>log</em>
1173 format is used. This format lists the commits in the range like
1174 <a href="git-submodule.html">git-submodule(1)</a> <code>summary</code> does. When <code>--submodule=diff</code>
1175 is specified, the <em>diff</em> format is used. This format shows an
1176 inline diff of the changes in the submodule contents between the
1177 commit range. Defaults to <code>diff.submodule</code> or the <em>short</em> format
1178 if the config option is unset.
1179 </p>
1180 </dd>
1181 <dt class="hdlist1">
1182 --color[=&lt;when&gt;]
1183 </dt>
1184 <dd>
1186 Show colored diff.
1187 <code>--color</code> (i.e. without <em>=&lt;when&gt;</em>) is the same as <code>--color=always</code>.
1188 <em>&lt;when&gt;</em> can be one of <code>always</code>, <code>never</code>, or <code>auto</code>.
1189 </p>
1190 </dd>
1191 <dt class="hdlist1">
1192 --no-color
1193 </dt>
1194 <dd>
1196 Turn off colored diff.
1197 It is the same as <code>--color=never</code>.
1198 </p>
1199 </dd>
1200 <dt class="hdlist1">
1201 --color-moved[=&lt;mode&gt;]
1202 </dt>
1203 <dd>
1205 Moved lines of code are colored differently.
1206 The &lt;mode&gt; defaults to <em>no</em> if the option is not given
1207 and to <em>zebra</em> if the option with no mode is given.
1208 The mode must be one of:
1209 </p>
1210 <div class="openblock">
1211 <div class="content">
1212 <div class="dlist"><dl>
1213 <dt class="hdlist1">
1215 </dt>
1216 <dd>
1218 Moved lines are not highlighted.
1219 </p>
1220 </dd>
1221 <dt class="hdlist1">
1222 default
1223 </dt>
1224 <dd>
1226 Is a synonym for <code>zebra</code>. This may change to a more sensible mode
1227 in the future.
1228 </p>
1229 </dd>
1230 <dt class="hdlist1">
1231 plain
1232 </dt>
1233 <dd>
1235 Any line that is added in one location and was removed
1236 in another location will be colored with <em>color.diff.newMoved</em>.
1237 Similarly <em>color.diff.oldMoved</em> will be used for removed lines
1238 that are added somewhere else in the diff. This mode picks up any
1239 moved line, but it is not very useful in a review to determine
1240 if a block of code was moved without permutation.
1241 </p>
1242 </dd>
1243 <dt class="hdlist1">
1244 blocks
1245 </dt>
1246 <dd>
1248 Blocks of moved text of at least 20 alphanumeric characters
1249 are detected greedily. The detected blocks are
1250 painted using either the <em>color.diff.{old,new}Moved</em> color.
1251 Adjacent blocks cannot be told apart.
1252 </p>
1253 </dd>
1254 <dt class="hdlist1">
1255 zebra
1256 </dt>
1257 <dd>
1259 Blocks of moved text are detected as in <em>blocks</em> mode. The blocks
1260 are painted using either the <em>color.diff.{old,new}Moved</em> color or
1261 <em>color.diff.{old,new}MovedAlternative</em>. The change between
1262 the two colors indicates that a new block was detected.
1263 </p>
1264 </dd>
1265 <dt class="hdlist1">
1266 dimmed-zebra
1267 </dt>
1268 <dd>
1270 Similar to <em>zebra</em>, but additional dimming of uninteresting parts
1271 of moved code is performed. The bordering lines of two adjacent
1272 blocks are considered interesting, the rest is uninteresting.
1273 <code>dimmed_zebra</code> is a deprecated synonym.
1274 </p>
1275 </dd>
1276 </dl></div>
1277 </div></div>
1278 </dd>
1279 <dt class="hdlist1">
1280 --no-color-moved
1281 </dt>
1282 <dd>
1284 Turn off move detection. This can be used to override configuration
1285 settings. It is the same as <code>--color-moved=no</code>.
1286 </p>
1287 </dd>
1288 <dt class="hdlist1">
1289 --color-moved-ws=&lt;modes&gt;
1290 </dt>
1291 <dd>
1293 This configures how whitespace is ignored when performing the
1294 move detection for <code>--color-moved</code>.
1295 These modes can be given as a comma separated list:
1296 </p>
1297 <div class="openblock">
1298 <div class="content">
1299 <div class="dlist"><dl>
1300 <dt class="hdlist1">
1302 </dt>
1303 <dd>
1305 Do not ignore whitespace when performing move detection.
1306 </p>
1307 </dd>
1308 <dt class="hdlist1">
1309 ignore-space-at-eol
1310 </dt>
1311 <dd>
1313 Ignore changes in whitespace at EOL.
1314 </p>
1315 </dd>
1316 <dt class="hdlist1">
1317 ignore-space-change
1318 </dt>
1319 <dd>
1321 Ignore changes in amount of whitespace. This ignores whitespace
1322 at line end, and considers all other sequences of one or
1323 more whitespace characters to be equivalent.
1324 </p>
1325 </dd>
1326 <dt class="hdlist1">
1327 ignore-all-space
1328 </dt>
1329 <dd>
1331 Ignore whitespace when comparing lines. This ignores differences
1332 even if one line has whitespace where the other line has none.
1333 </p>
1334 </dd>
1335 <dt class="hdlist1">
1336 allow-indentation-change
1337 </dt>
1338 <dd>
1340 Initially ignore any whitespace in the move detection, then
1341 group the moved code blocks only into a block if the change in
1342 whitespace is the same per line. This is incompatible with the
1343 other modes.
1344 </p>
1345 </dd>
1346 </dl></div>
1347 </div></div>
1348 </dd>
1349 <dt class="hdlist1">
1350 --no-color-moved-ws
1351 </dt>
1352 <dd>
1354 Do not ignore whitespace when performing move detection. This can be
1355 used to override configuration settings. It is the same as
1356 <code>--color-moved-ws=no</code>.
1357 </p>
1358 </dd>
1359 <dt class="hdlist1">
1360 --word-diff[=&lt;mode&gt;]
1361 </dt>
1362 <dd>
1364 Show a word diff, using the &lt;mode&gt; to delimit changed words.
1365 By default, words are delimited by whitespace; see
1366 <code>--word-diff-regex</code> below. The &lt;mode&gt; defaults to <em>plain</em>, and
1367 must be one of:
1368 </p>
1369 <div class="openblock">
1370 <div class="content">
1371 <div class="dlist"><dl>
1372 <dt class="hdlist1">
1373 color
1374 </dt>
1375 <dd>
1377 Highlight changed words using only colors. Implies <code>--color</code>.
1378 </p>
1379 </dd>
1380 <dt class="hdlist1">
1381 plain
1382 </dt>
1383 <dd>
1385 Show words as <code>[-removed-]</code> and <code>{+added+}</code>. Makes no
1386 attempts to escape the delimiters if they appear in the input,
1387 so the output may be ambiguous.
1388 </p>
1389 </dd>
1390 <dt class="hdlist1">
1391 porcelain
1392 </dt>
1393 <dd>
1395 Use a special line-based format intended for script
1396 consumption. Added/removed/unchanged runs are printed in the
1397 usual unified diff format, starting with a <code>+</code>/<code>-</code>/` `
1398 character at the beginning of the line and extending to the
1399 end of the line. Newlines in the input are represented by a
1400 tilde <code>~</code> on a line of its own.
1401 </p>
1402 </dd>
1403 <dt class="hdlist1">
1404 none
1405 </dt>
1406 <dd>
1408 Disable word diff again.
1409 </p>
1410 </dd>
1411 </dl></div>
1412 </div></div>
1413 <div class="paragraph"><p>Note that despite the name of the first mode, color is used to
1414 highlight the changed parts in all modes if enabled.</p></div>
1415 </dd>
1416 <dt class="hdlist1">
1417 --word-diff-regex=&lt;regex&gt;
1418 </dt>
1419 <dd>
1421 Use &lt;regex&gt; to decide what a word is, instead of considering
1422 runs of non-whitespace to be a word. Also implies
1423 <code>--word-diff</code> unless it was already enabled.
1424 </p>
1425 <div class="paragraph"><p>Every non-overlapping match of the
1426 &lt;regex&gt; is considered a word. Anything between these matches is
1427 considered whitespace and ignored(!) for the purposes of finding
1428 differences. You may want to append <code>|[^[:space:]]</code> to your regular
1429 expression to make sure that it matches all non-whitespace characters.
1430 A match that contains a newline is silently truncated(!) at the
1431 newline.</p></div>
1432 <div class="paragraph"><p>For example, <code>--word-diff-regex=.</code> will treat each character as a word
1433 and, correspondingly, show differences character by character.</p></div>
1434 <div class="paragraph"><p>The regex can also be set via a diff driver or configuration option, see
1435 <a href="gitattributes.html">gitattributes(5)</a> or <a href="git-config.html">git-config(1)</a>. Giving it explicitly
1436 overrides any diff driver or configuration setting. Diff drivers
1437 override configuration settings.</p></div>
1438 </dd>
1439 <dt class="hdlist1">
1440 --color-words[=&lt;regex&gt;]
1441 </dt>
1442 <dd>
1444 Equivalent to <code>--word-diff=color</code> plus (if a regex was
1445 specified) <code>--word-diff-regex=&lt;regex&gt;</code>.
1446 </p>
1447 </dd>
1448 <dt class="hdlist1">
1449 --no-renames
1450 </dt>
1451 <dd>
1453 Turn off rename detection, even when the configuration
1454 file gives the default to do so.
1455 </p>
1456 </dd>
1457 <dt class="hdlist1">
1458 --[no-]rename-empty
1459 </dt>
1460 <dd>
1462 Whether to use empty blobs as rename source.
1463 </p>
1464 </dd>
1465 <dt class="hdlist1">
1466 --check
1467 </dt>
1468 <dd>
1470 Warn if changes introduce conflict markers or whitespace errors.
1471 What are considered whitespace errors is controlled by <code>core.whitespace</code>
1472 configuration. By default, trailing whitespaces (including
1473 lines that consist solely of whitespaces) and a space character
1474 that is immediately followed by a tab character inside the
1475 initial indent of the line are considered whitespace errors.
1476 Exits with non-zero status if problems are found. Not compatible
1477 with --exit-code.
1478 </p>
1479 </dd>
1480 <dt class="hdlist1">
1481 --ws-error-highlight=&lt;kind&gt;
1482 </dt>
1483 <dd>
1485 Highlight whitespace errors in the <code>context</code>, <code>old</code> or <code>new</code>
1486 lines of the diff. Multiple values are separated by comma,
1487 <code>none</code> resets previous values, <code>default</code> reset the list to
1488 <code>new</code> and <code>all</code> is a shorthand for <code>old,new,context</code>. When
1489 this option is not given, and the configuration variable
1490 <code>diff.wsErrorHighlight</code> is not set, only whitespace errors in
1491 <code>new</code> lines are highlighted. The whitespace errors are colored
1492 with <code>color.diff.whitespace</code>.
1493 </p>
1494 </dd>
1495 <dt class="hdlist1">
1496 --full-index
1497 </dt>
1498 <dd>
1500 Instead of the first handful of characters, show the full
1501 pre- and post-image blob object names on the "index"
1502 line when generating patch format output.
1503 </p>
1504 </dd>
1505 <dt class="hdlist1">
1506 --binary
1507 </dt>
1508 <dd>
1510 In addition to <code>--full-index</code>, output a binary diff that
1511 can be applied with <code>git-apply</code>.
1512 Implies <code>--patch</code>.
1513 </p>
1514 </dd>
1515 <dt class="hdlist1">
1516 --abbrev[=&lt;n&gt;]
1517 </dt>
1518 <dd>
1520 Instead of showing the full 40-byte hexadecimal object
1521 name in diff-raw format output and diff-tree header
1522 lines, show the shortest prefix that is at least <em>&lt;n&gt;</em>
1523 hexdigits long that uniquely refers the object.
1524 In diff-patch output format, <code>--full-index</code> takes higher
1525 precedence, i.e. if <code>--full-index</code> is specified, full blob
1526 names will be shown regardless of <code>--abbrev</code>.
1527 Non default number of digits can be specified with <code>--abbrev=&lt;n&gt;</code>.
1528 </p>
1529 </dd>
1530 <dt class="hdlist1">
1531 -B[&lt;n&gt;][/&lt;m&gt;]
1532 </dt>
1533 <dt class="hdlist1">
1534 --break-rewrites[=[&lt;n&gt;][/&lt;m&gt;]]
1535 </dt>
1536 <dd>
1538 Break complete rewrite changes into pairs of delete and
1539 create. This serves two purposes:
1540 </p>
1541 <div class="paragraph"><p>It affects the way a change that amounts to a total rewrite of a file
1542 not as a series of deletion and insertion mixed together with a very
1543 few lines that happen to match textually as the context, but as a
1544 single deletion of everything old followed by a single insertion of
1545 everything new, and the number <code>m</code> controls this aspect of the -B
1546 option (defaults to 60%). <code>-B/70%</code> specifies that less than 30% of the
1547 original should remain in the result for Git to consider it a total
1548 rewrite (i.e. otherwise the resulting patch will be a series of
1549 deletion and insertion mixed together with context lines).</p></div>
1550 <div class="paragraph"><p>When used with -M, a totally-rewritten file is also considered as the
1551 source of a rename (usually -M only considers a file that disappeared
1552 as the source of a rename), and the number <code>n</code> controls this aspect of
1553 the -B option (defaults to 50%). <code>-B20%</code> specifies that a change with
1554 addition and deletion compared to 20% or more of the file&#8217;s size are
1555 eligible for being picked up as a possible source of a rename to
1556 another file.</p></div>
1557 </dd>
1558 <dt class="hdlist1">
1559 -M[&lt;n&gt;]
1560 </dt>
1561 <dt class="hdlist1">
1562 --find-renames[=&lt;n&gt;]
1563 </dt>
1564 <dd>
1566 Detect renames.
1567 If <code>n</code> is specified, it is a threshold on the similarity
1568 index (i.e. amount of addition/deletions compared to the
1569 file&#8217;s size). For example, <code>-M90%</code> means Git should consider a
1570 delete/add pair to be a rename if more than 90% of the file
1571 hasn&#8217;t changed. Without a <code>%</code> sign, the number is to be read as
1572 a fraction, with a decimal point before it. I.e., <code>-M5</code> becomes
1573 0.5, and is thus the same as <code>-M50%</code>. Similarly, <code>-M05</code> is
1574 the same as <code>-M5%</code>. To limit detection to exact renames, use
1575 <code>-M100%</code>. The default similarity index is 50%.
1576 </p>
1577 </dd>
1578 <dt class="hdlist1">
1579 -C[&lt;n&gt;]
1580 </dt>
1581 <dt class="hdlist1">
1582 --find-copies[=&lt;n&gt;]
1583 </dt>
1584 <dd>
1586 Detect copies as well as renames. See also <code>--find-copies-harder</code>.
1587 If <code>n</code> is specified, it has the same meaning as for <code>-M&lt;n&gt;</code>.
1588 </p>
1589 </dd>
1590 <dt class="hdlist1">
1591 --find-copies-harder
1592 </dt>
1593 <dd>
1595 For performance reasons, by default, <code>-C</code> option finds copies only
1596 if the original file of the copy was modified in the same
1597 changeset. This flag makes the command
1598 inspect unmodified files as candidates for the source of
1599 copy. This is a very expensive operation for large
1600 projects, so use it with caution. Giving more than one
1601 <code>-C</code> option has the same effect.
1602 </p>
1603 </dd>
1604 <dt class="hdlist1">
1606 </dt>
1607 <dt class="hdlist1">
1608 --irreversible-delete
1609 </dt>
1610 <dd>
1612 Omit the preimage for deletes, i.e. print only the header but not
1613 the diff between the preimage and <code>/dev/null</code>. The resulting patch
1614 is not meant to be applied with <code>patch</code> or <code>git apply</code>; this is
1615 solely for people who want to just concentrate on reviewing the
1616 text after the change. In addition, the output obviously lacks
1617 enough information to apply such a patch in reverse, even manually,
1618 hence the name of the option.
1619 </p>
1620 <div class="paragraph"><p>When used together with <code>-B</code>, omit also the preimage in the deletion part
1621 of a delete/create pair.</p></div>
1622 </dd>
1623 <dt class="hdlist1">
1624 -l&lt;num&gt;
1625 </dt>
1626 <dd>
1628 The <code>-M</code> and <code>-C</code> options involve some preliminary steps that
1629 can detect subsets of renames/copies cheaply, followed by an
1630 exhaustive fallback portion that compares all remaining
1631 unpaired destinations to all relevant sources. (For renames,
1632 only remaining unpaired sources are relevant; for copies, all
1633 original sources are relevant.) For N sources and
1634 destinations, this exhaustive check is O(N^2). This option
1635 prevents the exhaustive portion of rename/copy detection from
1636 running if the number of source/destination files involved
1637 exceeds the specified number. Defaults to diff.renameLimit.
1638 Note that a value of 0 is treated as unlimited.
1639 </p>
1640 </dd>
1641 <dt class="hdlist1">
1642 --diff-filter=[(A|C|D|M|R|T|U|X|B)&#8230;[*]]
1643 </dt>
1644 <dd>
1646 Select only files that are Added (<code>A</code>), Copied (<code>C</code>),
1647 Deleted (<code>D</code>), Modified (<code>M</code>), Renamed (<code>R</code>), have their
1648 type (i.e. regular file, symlink, submodule, &#8230;) changed (<code>T</code>),
1649 are Unmerged (<code>U</code>), are
1650 Unknown (<code>X</code>), or have had their pairing Broken (<code>B</code>).
1651 Any combination of the filter characters (including none) can be used.
1652 When <code>*</code> (All-or-none) is added to the combination, all
1653 paths are selected if there is any file that matches
1654 other criteria in the comparison; if there is no file
1655 that matches other criteria, nothing is selected.
1656 </p>
1657 <div class="paragraph"><p>Also, these upper-case letters can be downcased to exclude. E.g.
1658 <code>--diff-filter=ad</code> excludes added and deleted paths.</p></div>
1659 <div class="paragraph"><p>Note that not all diffs can feature all types. For instance, copied and
1660 renamed entries cannot appear if detection for those types is disabled.</p></div>
1661 </dd>
1662 <dt class="hdlist1">
1663 -S&lt;string&gt;
1664 </dt>
1665 <dd>
1667 Look for differences that change the number of occurrences of
1668 the specified string (i.e. addition/deletion) in a file.
1669 Intended for the scripter&#8217;s use.
1670 </p>
1671 <div class="paragraph"><p>It is useful when you&#8217;re looking for an exact block of code (like a
1672 struct), and want to know the history of that block since it first
1673 came into being: use the feature iteratively to feed the interesting
1674 block in the preimage back into <code>-S</code>, and keep going until you get the
1675 very first version of the block.</p></div>
1676 <div class="paragraph"><p>Binary files are searched as well.</p></div>
1677 </dd>
1678 <dt class="hdlist1">
1679 -G&lt;regex&gt;
1680 </dt>
1681 <dd>
1683 Look for differences whose patch text contains added/removed
1684 lines that match &lt;regex&gt;.
1685 </p>
1686 <div class="paragraph"><p>To illustrate the difference between <code>-S&lt;regex&gt; --pickaxe-regex</code> and
1687 <code>-G&lt;regex&gt;</code>, consider a commit with the following diff in the same
1688 file:</p></div>
1689 <div class="listingblock">
1690 <div class="content">
1691 <pre><code>+ return frotz(nitfol, two-&gt;ptr, 1, 0);
1693 - hit = frotz(nitfol, mf2.ptr, 1, 0);</code></pre>
1694 </div></div>
1695 <div class="paragraph"><p>While <code>git log -G"frotz\(nitfol"</code> will show this commit, <code>git log
1696 -S"frotz\(nitfol" --pickaxe-regex</code> will not (because the number of
1697 occurrences of that string did not change).</p></div>
1698 <div class="paragraph"><p>Unless <code>--text</code> is supplied patches of binary files without a textconv
1699 filter will be ignored.</p></div>
1700 <div class="paragraph"><p>See the <em>pickaxe</em> entry in <a href="gitdiffcore.html">gitdiffcore(7)</a> for more
1701 information.</p></div>
1702 </dd>
1703 <dt class="hdlist1">
1704 --find-object=&lt;object-id&gt;
1705 </dt>
1706 <dd>
1708 Look for differences that change the number of occurrences of
1709 the specified object. Similar to <code>-S</code>, just the argument is different
1710 in that it doesn&#8217;t search for a specific string but for a specific
1711 object id.
1712 </p>
1713 <div class="paragraph"><p>The object can be a blob or a submodule commit. It implies the <code>-t</code> option in
1714 <code>git-log</code> to also find trees.</p></div>
1715 </dd>
1716 <dt class="hdlist1">
1717 --pickaxe-all
1718 </dt>
1719 <dd>
1721 When <code>-S</code> or <code>-G</code> finds a change, show all the changes in that
1722 changeset, not just the files that contain the change
1723 in &lt;string&gt;.
1724 </p>
1725 </dd>
1726 <dt class="hdlist1">
1727 --pickaxe-regex
1728 </dt>
1729 <dd>
1731 Treat the &lt;string&gt; given to <code>-S</code> as an extended POSIX regular
1732 expression to match.
1733 </p>
1734 </dd>
1735 <dt class="hdlist1">
1736 -O&lt;orderfile&gt;
1737 </dt>
1738 <dd>
1740 Control the order in which files appear in the output.
1741 This overrides the <code>diff.orderFile</code> configuration variable
1742 (see <a href="git-config.html">git-config(1)</a>). To cancel <code>diff.orderFile</code>,
1743 use <code>-O/dev/null</code>.
1744 </p>
1745 <div class="paragraph"><p>The output order is determined by the order of glob patterns in
1746 &lt;orderfile&gt;.
1747 All files with pathnames that match the first pattern are output
1748 first, all files with pathnames that match the second pattern (but not
1749 the first) are output next, and so on.
1750 All files with pathnames that do not match any pattern are output
1751 last, as if there was an implicit match-all pattern at the end of the
1752 file.
1753 If multiple pathnames have the same rank (they match the same pattern
1754 but no earlier patterns), their output order relative to each other is
1755 the normal order.</p></div>
1756 <div class="paragraph"><p>&lt;orderfile&gt; is parsed as follows:</p></div>
1757 <div class="openblock">
1758 <div class="content">
1759 <div class="ulist"><ul>
1760 <li>
1762 Blank lines are ignored, so they can be used as separators for
1763 readability.
1764 </p>
1765 </li>
1766 <li>
1768 Lines starting with a hash ("<code>#</code>") are ignored, so they can be used
1769 for comments. Add a backslash ("<code>\</code>") to the beginning of the
1770 pattern if it starts with a hash.
1771 </p>
1772 </li>
1773 <li>
1775 Each other line contains a single pattern.
1776 </p>
1777 </li>
1778 </ul></div>
1779 </div></div>
1780 <div class="paragraph"><p>Patterns have the same syntax and semantics as patterns used for
1781 fnmatch(3) without the FNM_PATHNAME flag, except a pathname also
1782 matches a pattern if removing any number of the final pathname
1783 components matches the pattern. For example, the pattern "<code>foo*bar</code>"
1784 matches "<code>fooasdfbar</code>" and "<code>foo/bar/baz/asdf</code>" but not "<code>foobarx</code>".</p></div>
1785 </dd>
1786 <dt class="hdlist1">
1787 --skip-to=&lt;file&gt;
1788 </dt>
1789 <dt class="hdlist1">
1790 --rotate-to=&lt;file&gt;
1791 </dt>
1792 <dd>
1794 Discard the files before the named &lt;file&gt; from the output
1795 (i.e. <em>skip to</em>), or move them to the end of the output
1796 (i.e. <em>rotate to</em>). These options were invented primarily for the use
1797 of the <code>git difftool</code> command, and may not be very useful
1798 otherwise.
1799 </p>
1800 </dd>
1801 <dt class="hdlist1">
1803 </dt>
1804 <dd>
1806 Swap two inputs; that is, show differences from index or
1807 on-disk file to tree contents.
1808 </p>
1809 </dd>
1810 <dt class="hdlist1">
1811 --relative[=&lt;path&gt;]
1812 </dt>
1813 <dt class="hdlist1">
1814 --no-relative
1815 </dt>
1816 <dd>
1818 When run from a subdirectory of the project, it can be
1819 told to exclude changes outside the directory and show
1820 pathnames relative to it with this option. When you are
1821 not in a subdirectory (e.g. in a bare repository), you
1822 can name which subdirectory to make the output relative
1823 to by giving a &lt;path&gt; as an argument.
1824 <code>--no-relative</code> can be used to countermand both <code>diff.relative</code> config
1825 option and previous <code>--relative</code>.
1826 </p>
1827 </dd>
1828 <dt class="hdlist1">
1830 </dt>
1831 <dt class="hdlist1">
1832 --text
1833 </dt>
1834 <dd>
1836 Treat all files as text.
1837 </p>
1838 </dd>
1839 <dt class="hdlist1">
1840 --ignore-cr-at-eol
1841 </dt>
1842 <dd>
1844 Ignore carriage-return at the end of line when doing a comparison.
1845 </p>
1846 </dd>
1847 <dt class="hdlist1">
1848 --ignore-space-at-eol
1849 </dt>
1850 <dd>
1852 Ignore changes in whitespace at EOL.
1853 </p>
1854 </dd>
1855 <dt class="hdlist1">
1857 </dt>
1858 <dt class="hdlist1">
1859 --ignore-space-change
1860 </dt>
1861 <dd>
1863 Ignore changes in amount of whitespace. This ignores whitespace
1864 at line end, and considers all other sequences of one or
1865 more whitespace characters to be equivalent.
1866 </p>
1867 </dd>
1868 <dt class="hdlist1">
1870 </dt>
1871 <dt class="hdlist1">
1872 --ignore-all-space
1873 </dt>
1874 <dd>
1876 Ignore whitespace when comparing lines. This ignores
1877 differences even if one line has whitespace where the other
1878 line has none.
1879 </p>
1880 </dd>
1881 <dt class="hdlist1">
1882 --ignore-blank-lines
1883 </dt>
1884 <dd>
1886 Ignore changes whose lines are all blank.
1887 </p>
1888 </dd>
1889 <dt class="hdlist1">
1890 -I&lt;regex&gt;
1891 </dt>
1892 <dt class="hdlist1">
1893 --ignore-matching-lines=&lt;regex&gt;
1894 </dt>
1895 <dd>
1897 Ignore changes whose all lines match &lt;regex&gt;. This option may
1898 be specified more than once.
1899 </p>
1900 </dd>
1901 <dt class="hdlist1">
1902 --inter-hunk-context=&lt;lines&gt;
1903 </dt>
1904 <dd>
1906 Show the context between diff hunks, up to the specified number
1907 of lines, thereby fusing hunks that are close to each other.
1908 Defaults to <code>diff.interHunkContext</code> or 0 if the config option
1909 is unset.
1910 </p>
1911 </dd>
1912 <dt class="hdlist1">
1914 </dt>
1915 <dt class="hdlist1">
1916 --function-context
1917 </dt>
1918 <dd>
1920 Show whole function as context lines for each change.
1921 The function names are determined in the same way as
1922 <code>git diff</code> works out patch hunk headers (see <em>Defining a
1923 custom hunk-header</em> in <a href="gitattributes.html">gitattributes(5)</a>).
1924 </p>
1925 </dd>
1926 <dt class="hdlist1">
1927 --exit-code
1928 </dt>
1929 <dd>
1931 Make the program exit with codes similar to diff(1).
1932 That is, it exits with 1 if there were differences and
1933 0 means no differences.
1934 </p>
1935 </dd>
1936 <dt class="hdlist1">
1937 --quiet
1938 </dt>
1939 <dd>
1941 Disable all output of the program. Implies <code>--exit-code</code>.
1942 </p>
1943 </dd>
1944 <dt class="hdlist1">
1945 --ext-diff
1946 </dt>
1947 <dd>
1949 Allow an external diff helper to be executed. If you set an
1950 external diff driver with <a href="gitattributes.html">gitattributes(5)</a>, you need
1951 to use this option with <a href="git-log.html">git-log(1)</a> and friends.
1952 </p>
1953 </dd>
1954 <dt class="hdlist1">
1955 --no-ext-diff
1956 </dt>
1957 <dd>
1959 Disallow external diff drivers.
1960 </p>
1961 </dd>
1962 <dt class="hdlist1">
1963 --textconv
1964 </dt>
1965 <dt class="hdlist1">
1966 --no-textconv
1967 </dt>
1968 <dd>
1970 Allow (or disallow) external text conversion filters to be run
1971 when comparing binary files. See <a href="gitattributes.html">gitattributes(5)</a> for
1972 details. Because textconv filters are typically a one-way
1973 conversion, the resulting diff is suitable for human
1974 consumption, but cannot be applied. For this reason, textconv
1975 filters are enabled by default only for <a href="git-diff.html">git-diff(1)</a> and
1976 <a href="git-log.html">git-log(1)</a>, but not for <a href="git-format-patch.html">git-format-patch(1)</a> or
1977 diff plumbing commands.
1978 </p>
1979 </dd>
1980 <dt class="hdlist1">
1981 --ignore-submodules[=&lt;when&gt;]
1982 </dt>
1983 <dd>
1985 Ignore changes to submodules in the diff generation. &lt;when&gt; can be
1986 either "none", "untracked", "dirty" or "all", which is the default.
1987 Using "none" will consider the submodule modified when it either contains
1988 untracked or modified files or its HEAD differs from the commit recorded
1989 in the superproject and can be used to override any settings of the
1990 <em>ignore</em> option in <a href="git-config.html">git-config(1)</a> or <a href="gitmodules.html">gitmodules(5)</a>. When
1991 "untracked" is used submodules are not considered dirty when they only
1992 contain untracked content (but they are still scanned for modified
1993 content). Using "dirty" ignores all changes to the work tree of submodules,
1994 only changes to the commits stored in the superproject are shown (this was
1995 the behavior until 1.7.0). Using "all" hides all changes to submodules.
1996 </p>
1997 </dd>
1998 <dt class="hdlist1">
1999 --src-prefix=&lt;prefix&gt;
2000 </dt>
2001 <dd>
2003 Show the given source prefix instead of "a/".
2004 </p>
2005 </dd>
2006 <dt class="hdlist1">
2007 --dst-prefix=&lt;prefix&gt;
2008 </dt>
2009 <dd>
2011 Show the given destination prefix instead of "b/".
2012 </p>
2013 </dd>
2014 <dt class="hdlist1">
2015 --no-prefix
2016 </dt>
2017 <dd>
2019 Do not show any source or destination prefix.
2020 </p>
2021 </dd>
2022 <dt class="hdlist1">
2023 --default-prefix
2024 </dt>
2025 <dd>
2027 Use the default source and destination prefixes ("a/" and "b/").
2028 This overrides configuration variables such as <code>diff.noprefix</code>,
2029 <code>diff.srcPrefix</code>, <code>diff.dstPrefix</code>, and <code>diff.mnemonicPrefix</code>
2030 (see <code>git-config</code>(1)).
2031 </p>
2032 </dd>
2033 <dt class="hdlist1">
2034 --line-prefix=&lt;prefix&gt;
2035 </dt>
2036 <dd>
2038 Prepend an additional prefix to every line of output.
2039 </p>
2040 </dd>
2041 <dt class="hdlist1">
2042 --ita-invisible-in-index
2043 </dt>
2044 <dd>
2046 By default entries added by "git add -N" appear as an existing
2047 empty file in "git diff" and a new file in "git diff --cached".
2048 This option makes the entry appear as a new file in "git diff"
2049 and non-existent in "git diff --cached". This option could be
2050 reverted with <code>--ita-visible-in-index</code>. Both options are
2051 experimental and could be removed in future.
2052 </p>
2053 </dd>
2054 </dl></div>
2055 <div class="paragraph"><p>For more detailed explanation on these common options, see also
2056 <a href="gitdiffcore.html">gitdiffcore(7)</a>.</p></div>
2057 <div class="dlist"><dl>
2058 <dt class="hdlist1">
2059 -1 --base
2060 </dt>
2061 <dt class="hdlist1">
2062 -2 --ours
2063 </dt>
2064 <dt class="hdlist1">
2065 -3 --theirs
2066 </dt>
2067 <dt class="hdlist1">
2069 </dt>
2070 <dd>
2072 Diff against the "base" version, "our branch", or "their
2073 branch" respectively. With these options, diffs for
2074 merged entries are not shown.
2075 </p>
2076 <div class="paragraph"><p>The default is to diff against our branch (-2) and the
2077 cleanly resolved paths. The option -0 can be given to
2078 omit diff output for unmerged entries and just show "Unmerged".</p></div>
2079 </dd>
2080 <dt class="hdlist1">
2082 </dt>
2083 <dt class="hdlist1">
2084 --cc
2085 </dt>
2086 <dd>
2088 This compares stage 2 (our branch), stage 3 (their
2089 branch), and the working tree file and outputs a combined
2090 diff, similar to the way <em>diff-tree</em> shows a merge
2091 commit with these flags.
2092 </p>
2093 </dd>
2094 <dt class="hdlist1">
2096 </dt>
2097 <dd>
2099 Remain silent even for nonexistent files
2100 </p>
2101 </dd>
2102 </dl></div>
2103 </div>
2104 </div>
2105 <div class="sect1">
2106 <h2 id="_raw_output_format">Raw output format</h2>
2107 <div class="sectionbody">
2108 <div class="paragraph"><p>The raw output format from "git-diff-index", "git-diff-tree",
2109 "git-diff-files" and "git diff --raw" are very similar.</p></div>
2110 <div class="paragraph"><p>These commands all compare two sets of things; what is
2111 compared differs:</p></div>
2112 <div class="dlist"><dl>
2113 <dt class="hdlist1">
2114 git-diff-index &lt;tree-ish&gt;
2115 </dt>
2116 <dd>
2118 compares the &lt;tree-ish&gt; and the files on the filesystem.
2119 </p>
2120 </dd>
2121 <dt class="hdlist1">
2122 git-diff-index --cached &lt;tree-ish&gt;
2123 </dt>
2124 <dd>
2126 compares the &lt;tree-ish&gt; and the index.
2127 </p>
2128 </dd>
2129 <dt class="hdlist1">
2130 git-diff-tree [-r] &lt;tree-ish-1&gt; &lt;tree-ish-2&gt; [&lt;pattern&gt;&#8230;]
2131 </dt>
2132 <dd>
2134 compares the trees named by the two arguments.
2135 </p>
2136 </dd>
2137 <dt class="hdlist1">
2138 git-diff-files [&lt;pattern&gt;&#8230;]
2139 </dt>
2140 <dd>
2142 compares the index and the files on the filesystem.
2143 </p>
2144 </dd>
2145 </dl></div>
2146 <div class="paragraph"><p>The "git-diff-tree" command begins its output by printing the hash of
2147 what is being compared. After that, all the commands print one output
2148 line per changed file.</p></div>
2149 <div class="paragraph"><p>An output line is formatted this way:</p></div>
2150 <div class="listingblock">
2151 <div class="content">
2152 <pre><code>in-place edit :100644 100644 bcd1234 0123456 M file0
2153 copy-edit :100644 100644 abcd123 1234567 C68 file1 file2
2154 rename-edit :100644 100644 abcd123 1234567 R86 file1 file3
2155 create :000000 100644 0000000 1234567 A file4
2156 delete :100644 000000 1234567 0000000 D file5
2157 unmerged :000000 000000 0000000 0000000 U file6</code></pre>
2158 </div></div>
2159 <div class="paragraph"><p>That is, from the left to the right:</p></div>
2160 <div class="olist arabic"><ol class="arabic">
2161 <li>
2163 a colon.
2164 </p>
2165 </li>
2166 <li>
2168 mode for "src"; 000000 if creation or unmerged.
2169 </p>
2170 </li>
2171 <li>
2173 a space.
2174 </p>
2175 </li>
2176 <li>
2178 mode for "dst"; 000000 if deletion or unmerged.
2179 </p>
2180 </li>
2181 <li>
2183 a space.
2184 </p>
2185 </li>
2186 <li>
2188 sha1 for "src"; 0{40} if creation or unmerged.
2189 </p>
2190 </li>
2191 <li>
2193 a space.
2194 </p>
2195 </li>
2196 <li>
2198 sha1 for "dst"; 0{40} if deletion, unmerged or "work tree out of sync with the index".
2199 </p>
2200 </li>
2201 <li>
2203 a space.
2204 </p>
2205 </li>
2206 <li>
2208 status, followed by optional "score" number.
2209 </p>
2210 </li>
2211 <li>
2213 a tab or a NUL when <code>-z</code> option is used.
2214 </p>
2215 </li>
2216 <li>
2218 path for "src"
2219 </p>
2220 </li>
2221 <li>
2223 a tab or a NUL when <code>-z</code> option is used; only exists for C or R.
2224 </p>
2225 </li>
2226 <li>
2228 path for "dst"; only exists for C or R.
2229 </p>
2230 </li>
2231 <li>
2233 an LF or a NUL when <code>-z</code> option is used, to terminate the record.
2234 </p>
2235 </li>
2236 </ol></div>
2237 <div class="paragraph"><p>Possible status letters are:</p></div>
2238 <div class="ulist"><ul>
2239 <li>
2241 A: addition of a file
2242 </p>
2243 </li>
2244 <li>
2246 C: copy of a file into a new one
2247 </p>
2248 </li>
2249 <li>
2251 D: deletion of a file
2252 </p>
2253 </li>
2254 <li>
2256 M: modification of the contents or mode of a file
2257 </p>
2258 </li>
2259 <li>
2261 R: renaming of a file
2262 </p>
2263 </li>
2264 <li>
2266 T: change in the type of the file (regular file, symbolic link or submodule)
2267 </p>
2268 </li>
2269 <li>
2271 U: file is unmerged (you must complete the merge before it can
2272 be committed)
2273 </p>
2274 </li>
2275 <li>
2277 X: "unknown" change type (most probably a bug, please report it)
2278 </p>
2279 </li>
2280 </ul></div>
2281 <div class="paragraph"><p>Status letters C and R are always followed by a score (denoting the
2282 percentage of similarity between the source and target of the move or
2283 copy). Status letter M may be followed by a score (denoting the
2284 percentage of dissimilarity) for file rewrites.</p></div>
2285 <div class="paragraph"><p>The sha1 for "dst" is shown as all 0&#8217;s if a file on the filesystem
2286 is out of sync with the index.</p></div>
2287 <div class="paragraph"><p>Example:</p></div>
2288 <div class="listingblock">
2289 <div class="content">
2290 <pre><code>:100644 100644 5be4a4a 0000000 M file.c</code></pre>
2291 </div></div>
2292 <div class="paragraph"><p>Without the <code>-z</code> option, pathnames with "unusual" characters are
2293 quoted as explained for the configuration variable <code>core.quotePath</code>
2294 (see <a href="git-config.html">git-config(1)</a>). Using <code>-z</code> the filename is output
2295 verbatim and the line is terminated by a NUL byte.</p></div>
2296 </div>
2297 </div>
2298 <div class="sect1">
2299 <h2 id="_diff_format_for_merges">diff format for merges</h2>
2300 <div class="sectionbody">
2301 <div class="paragraph"><p>"git-diff-tree", "git-diff-files" and "git-diff --raw"
2302 can take <code>-c</code> or <code>--cc</code> option
2303 to generate diff output also for merge commits. The output differs
2304 from the format described above in the following way:</p></div>
2305 <div class="olist arabic"><ol class="arabic">
2306 <li>
2308 there is a colon for each parent
2309 </p>
2310 </li>
2311 <li>
2313 there are more "src" modes and "src" sha1
2314 </p>
2315 </li>
2316 <li>
2318 status is concatenated status characters for each parent
2319 </p>
2320 </li>
2321 <li>
2323 no optional "score" number
2324 </p>
2325 </li>
2326 <li>
2328 tab-separated pathname(s) of the file
2329 </p>
2330 </li>
2331 </ol></div>
2332 <div class="paragraph"><p>For <code>-c</code> and <code>--cc</code>, only the destination or final path is shown even
2333 if the file was renamed on any side of history. With
2334 <code>--combined-all-paths</code>, the name of the path in each parent is shown
2335 followed by the name of the path in the merge commit.</p></div>
2336 <div class="paragraph"><p>Examples for <code>-c</code> and <code>--cc</code> without <code>--combined-all-paths</code>:</p></div>
2337 <div class="listingblock">
2338 <div class="content">
2339 <pre><code>::100644 100644 100644 fabadb8 cc95eb0 4866510 MM desc.c
2340 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM bar.sh
2341 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR phooey.c</code></pre>
2342 </div></div>
2343 <div class="paragraph"><p>Examples when <code>--combined-all-paths</code> added to either <code>-c</code> or <code>--cc</code>:</p></div>
2344 <div class="listingblock">
2345 <div class="content">
2346 <pre><code>::100644 100644 100644 fabadb8 cc95eb0 4866510 MM desc.c desc.c desc.c
2347 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM foo.sh bar.sh bar.sh
2348 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR fooey.c fuey.c phooey.c</code></pre>
2349 </div></div>
2350 <div class="paragraph"><p>Note that <em>combined diff</em> lists only files which were modified from
2351 all parents.</p></div>
2352 </div>
2353 </div>
2354 <div class="sect1">
2355 <h2 id="generate_patch_text_with_p">Generating patch text with -p</h2>
2356 <div class="sectionbody">
2357 <div class="paragraph"><p>Running
2358 <a href="git-diff.html">git-diff(1)</a>,
2359 <a href="git-log.html">git-log(1)</a>,
2360 <a href="git-show.html">git-show(1)</a>,
2361 <a href="git-diff-index.html">git-diff-index(1)</a>,
2362 <a href="git-diff-tree.html">git-diff-tree(1)</a>, or
2363 <a href="git-diff-files.html">git-diff-files(1)</a>
2364 with the <code>-p</code> option produces patch text.
2365 You can customize the creation of patch text via the
2366 <code>GIT_EXTERNAL_DIFF</code> and the <code>GIT_DIFF_OPTS</code> environment variables
2367 (see <a href="git.html">git(1)</a>), and the <code>diff</code> attribute (see <a href="gitattributes.html">gitattributes(5)</a>).</p></div>
2368 <div class="paragraph"><p>What the -p option produces is slightly different from the traditional
2369 diff format:</p></div>
2370 <div class="olist arabic"><ol class="arabic">
2371 <li>
2373 It is preceded by a "git diff" header that looks like this:
2374 </p>
2375 <div class="literalblock">
2376 <div class="content">
2377 <pre><code>diff --git a/file1 b/file2</code></pre>
2378 </div></div>
2379 <div class="paragraph"><p>The <code>a/</code> and <code>b/</code> filenames are the same unless rename/copy is
2380 involved. Especially, even for a creation or a deletion,
2381 <code>/dev/null</code> is <em>not</em> used in place of the <code>a/</code> or <code>b/</code> filenames.</p></div>
2382 <div class="paragraph"><p>When a rename/copy is involved, <code>file1</code> and <code>file2</code> show the
2383 name of the source file of the rename/copy and the name of
2384 the file that the rename/copy produces, respectively.</p></div>
2385 </li>
2386 <li>
2388 It is followed by one or more extended header lines:
2389 </p>
2390 <div class="literalblock">
2391 <div class="content">
2392 <pre><code>old mode &lt;mode&gt;
2393 new mode &lt;mode&gt;
2394 deleted file mode &lt;mode&gt;
2395 new file mode &lt;mode&gt;
2396 copy from &lt;path&gt;
2397 copy to &lt;path&gt;
2398 rename from &lt;path&gt;
2399 rename to &lt;path&gt;
2400 similarity index &lt;number&gt;
2401 dissimilarity index &lt;number&gt;
2402 index &lt;hash&gt;..&lt;hash&gt; &lt;mode&gt;</code></pre>
2403 </div></div>
2404 <div class="paragraph"><p>File modes are printed as 6-digit octal numbers including the file type
2405 and file permission bits.</p></div>
2406 <div class="paragraph"><p>Path names in extended headers do not include the <code>a/</code> and <code>b/</code> prefixes.</p></div>
2407 <div class="paragraph"><p>The similarity index is the percentage of unchanged lines, and
2408 the dissimilarity index is the percentage of changed lines. It
2409 is a rounded down integer, followed by a percent sign. The
2410 similarity index value of 100% is thus reserved for two equal
2411 files, while 100% dissimilarity means that no line from the old
2412 file made it into the new one.</p></div>
2413 <div class="paragraph"><p>The index line includes the blob object names before and after the change.
2414 The &lt;mode&gt; is included if the file mode does not change; otherwise,
2415 separate lines indicate the old and the new mode.</p></div>
2416 </li>
2417 <li>
2419 Pathnames with "unusual" characters are quoted as explained for
2420 the configuration variable <code>core.quotePath</code> (see
2421 <a href="git-config.html">git-config(1)</a>).
2422 </p>
2423 </li>
2424 <li>
2426 All the <code>file1</code> files in the output refer to files before the
2427 commit, and all the <code>file2</code> files refer to files after the commit.
2428 It is incorrect to apply each change to each file sequentially. For
2429 example, this patch will swap a and b:
2430 </p>
2431 <div class="literalblock">
2432 <div class="content">
2433 <pre><code>diff --git a/a b/b
2434 rename from a
2435 rename to b
2436 diff --git a/b b/a
2437 rename from b
2438 rename to a</code></pre>
2439 </div></div>
2440 </li>
2441 <li>
2443 Hunk headers mention the name of the function to which the hunk
2444 applies. See "Defining a custom hunk-header" in
2445 <a href="gitattributes.html">gitattributes(5)</a> for details of how to tailor this to
2446 specific languages.
2447 </p>
2448 </li>
2449 </ol></div>
2450 </div>
2451 </div>
2452 <div class="sect1">
2453 <h2 id="_combined_diff_format">Combined diff format</h2>
2454 <div class="sectionbody">
2455 <div class="paragraph"><p>Any diff-generating command can take the <code>-c</code> or <code>--cc</code> option to
2456 produce a <em>combined diff</em> when showing a merge. This is the default
2457 format when showing merges with <a href="git-diff.html">git-diff(1)</a> or
2458 <a href="git-show.html">git-show(1)</a>. Note also that you can give suitable
2459 <code>--diff-merges</code> option to any of these commands to force generation of
2460 diffs in a specific format.</p></div>
2461 <div class="paragraph"><p>A "combined diff" format looks like this:</p></div>
2462 <div class="listingblock">
2463 <div class="content">
2464 <pre><code>diff --combined describe.c
2465 index fabadb8,cc95eb0..4866510
2466 --- a/describe.c
2467 +++ b/describe.c
2468 @@@ -98,20 -98,12 +98,20 @@@
2469 return (a_date &gt; b_date) ? -1 : (a_date == b_date) ? 0 : 1;
2472 - static void describe(char *arg)
2473 -static void describe(struct commit *cmit, int last_one)
2474 ++static void describe(char *arg, int last_one)
2476 + unsigned char sha1[20];
2477 + struct commit *cmit;
2478 struct commit_list *list;
2479 static int initialized = 0;
2480 struct commit_name *n;
2482 + if (get_sha1(arg, sha1) &lt; 0)
2483 + usage(describe_usage);
2484 + cmit = lookup_commit_reference(sha1);
2485 + if (!cmit)
2486 + usage(describe_usage);
2488 if (!initialized) {
2489 initialized = 1;
2490 for_each_ref(get_name);</code></pre>
2491 </div></div>
2492 <div class="olist arabic"><ol class="arabic">
2493 <li>
2495 It is preceded by a "git diff" header, that looks like
2496 this (when the <code>-c</code> option is used):
2497 </p>
2498 <div class="literalblock">
2499 <div class="content">
2500 <pre><code>diff --combined file</code></pre>
2501 </div></div>
2502 <div class="paragraph"><p>or like this (when the <code>--cc</code> option is used):</p></div>
2503 <div class="literalblock">
2504 <div class="content">
2505 <pre><code>diff --cc file</code></pre>
2506 </div></div>
2507 </li>
2508 <li>
2510 It is followed by one or more extended header lines
2511 (this example shows a merge with two parents):
2512 </p>
2513 <div class="literalblock">
2514 <div class="content">
2515 <pre><code>index &lt;hash&gt;,&lt;hash&gt;..&lt;hash&gt;
2516 mode &lt;mode&gt;,&lt;mode&gt;..&lt;mode&gt;
2517 new file mode &lt;mode&gt;
2518 deleted file mode &lt;mode&gt;,&lt;mode&gt;</code></pre>
2519 </div></div>
2520 <div class="paragraph"><p>The <code>mode &lt;mode&gt;,&lt;mode&gt;..&lt;mode&gt;</code> line appears only if at least one of
2521 the &lt;mode&gt; is different from the rest. Extended headers with
2522 information about detected content movement (renames and
2523 copying detection) are designed to work with the diff of two
2524 &lt;tree-ish&gt; and are not used by combined diff format.</p></div>
2525 </li>
2526 <li>
2528 It is followed by a two-line from-file/to-file header:
2529 </p>
2530 <div class="literalblock">
2531 <div class="content">
2532 <pre><code>--- a/file
2533 +++ b/file</code></pre>
2534 </div></div>
2535 <div class="paragraph"><p>Similar to the two-line header for the traditional <em>unified</em> diff
2536 format, <code>/dev/null</code> is used to signal created or deleted
2537 files.</p></div>
2538 <div class="paragraph"><p>However, if the --combined-all-paths option is provided, instead of a
2539 two-line from-file/to-file, you get an N+1 line from-file/to-file header,
2540 where N is the number of parents in the merge commit:</p></div>
2541 <div class="literalblock">
2542 <div class="content">
2543 <pre><code>--- a/file
2544 --- a/file
2545 --- a/file
2546 +++ b/file</code></pre>
2547 </div></div>
2548 <div class="paragraph"><p>This extended format can be useful if rename or copy detection is
2549 active, to allow you to see the original name of the file in different
2550 parents.</p></div>
2551 </li>
2552 <li>
2554 Chunk header format is modified to prevent people from
2555 accidentally feeding it to <code>patch -p1</code>. Combined diff format
2556 was created for review of merge commit changes, and was not
2557 meant to be applied. The change is similar to the change in the
2558 extended <em>index</em> header:
2559 </p>
2560 <div class="literalblock">
2561 <div class="content">
2562 <pre><code>@@@ &lt;from-file-range&gt; &lt;from-file-range&gt; &lt;to-file-range&gt; @@@</code></pre>
2563 </div></div>
2564 <div class="paragraph"><p>There are (number of parents + 1) <code>@</code> characters in the chunk
2565 header for combined diff format.</p></div>
2566 </li>
2567 </ol></div>
2568 <div class="paragraph"><p>Unlike the traditional <em>unified</em> diff format, which shows two
2569 files A and B with a single column that has <code>-</code> (minus&#8201;&#8212;&#8201;appears in A but removed in B), <code>+</code> (plus&#8201;&#8212;&#8201;missing in A but
2570 added to B), or <code>" "</code> (space&#8201;&#8212;&#8201;unchanged) prefix, this format
2571 compares two or more files file1, file2,&#8230; with one file X, and
2572 shows how X differs from each of fileN. One column for each of
2573 fileN is prepended to the output line to note how X&#8217;s line is
2574 different from it.</p></div>
2575 <div class="paragraph"><p>A <code>-</code> character in the column N means that the line appears in
2576 fileN but it does not appear in the result. A <code>+</code> character
2577 in the column N means that the line appears in the result,
2578 and fileN does not have that line (in other words, the line was
2579 added, from the point of view of that parent).</p></div>
2580 <div class="paragraph"><p>In the above example output, the function signature was changed
2581 from both files (hence two <code>-</code> removals from both file1 and
2582 file2, plus <code>++</code> to mean one line that was added does not appear
2583 in either file1 or file2). Also, eight other lines are the same
2584 from file1 but do not appear in file2 (hence prefixed with <code>+</code>).</p></div>
2585 <div class="paragraph"><p>When shown by <code>git diff-tree -c</code>, it compares the parents of a
2586 merge commit with the merge result (i.e. file1..fileN are the
2587 parents). When shown by <code>git diff-files -c</code>, it compares the
2588 two unresolved merge parents with the working tree file
2589 (i.e. file1 is stage 2 aka "our version", file2 is stage 3 aka
2590 "their version").</p></div>
2591 </div>
2592 </div>
2593 <div class="sect1">
2594 <h2 id="_other_diff_formats">other diff formats</h2>
2595 <div class="sectionbody">
2596 <div class="paragraph"><p>The <code>--summary</code> option describes newly added, deleted, renamed and
2597 copied files. The <code>--stat</code> option adds diffstat(1) graph to the
2598 output. These options can be combined with other options, such as
2599 <code>-p</code>, and are meant for human consumption.</p></div>
2600 <div class="paragraph"><p>When showing a change that involves a rename or a copy, <code>--stat</code> output
2601 formats the pathnames compactly by combining common prefix and suffix of
2602 the pathnames. For example, a change that moves <code>arch/i386/Makefile</code> to
2603 <code>arch/x86/Makefile</code> while modifying 4 lines will be shown like this:</p></div>
2604 <div class="listingblock">
2605 <div class="content">
2606 <pre><code>arch/{i386 =&gt; x86}/Makefile | 4 +--</code></pre>
2607 </div></div>
2608 <div class="paragraph"><p>The <code>--numstat</code> option gives the diffstat(1) information but is designed
2609 for easier machine consumption. An entry in <code>--numstat</code> output looks
2610 like this:</p></div>
2611 <div class="listingblock">
2612 <div class="content">
2613 <pre><code>1 2 README
2614 3 1 arch/{i386 =&gt; x86}/Makefile</code></pre>
2615 </div></div>
2616 <div class="paragraph"><p>That is, from left to right:</p></div>
2617 <div class="olist arabic"><ol class="arabic">
2618 <li>
2620 the number of added lines;
2621 </p>
2622 </li>
2623 <li>
2625 a tab;
2626 </p>
2627 </li>
2628 <li>
2630 the number of deleted lines;
2631 </p>
2632 </li>
2633 <li>
2635 a tab;
2636 </p>
2637 </li>
2638 <li>
2640 pathname (possibly with rename/copy information);
2641 </p>
2642 </li>
2643 <li>
2645 a newline.
2646 </p>
2647 </li>
2648 </ol></div>
2649 <div class="paragraph"><p>When <code>-z</code> output option is in effect, the output is formatted this way:</p></div>
2650 <div class="listingblock">
2651 <div class="content">
2652 <pre><code>1 2 README NUL
2653 3 1 NUL arch/i386/Makefile NUL arch/x86/Makefile NUL</code></pre>
2654 </div></div>
2655 <div class="paragraph"><p>That is:</p></div>
2656 <div class="olist arabic"><ol class="arabic">
2657 <li>
2659 the number of added lines;
2660 </p>
2661 </li>
2662 <li>
2664 a tab;
2665 </p>
2666 </li>
2667 <li>
2669 the number of deleted lines;
2670 </p>
2671 </li>
2672 <li>
2674 a tab;
2675 </p>
2676 </li>
2677 <li>
2679 a NUL (only exists if renamed/copied);
2680 </p>
2681 </li>
2682 <li>
2684 pathname in preimage;
2685 </p>
2686 </li>
2687 <li>
2689 a NUL (only exists if renamed/copied);
2690 </p>
2691 </li>
2692 <li>
2694 pathname in postimage (only exists if renamed/copied);
2695 </p>
2696 </li>
2697 <li>
2699 a NUL.
2700 </p>
2701 </li>
2702 </ol></div>
2703 <div class="paragraph"><p>The extra <code>NUL</code> before the preimage path in renamed case is to allow
2704 scripts that read the output to tell if the current record being read is
2705 a single-path record or a rename/copy record without reading ahead.
2706 After reading added and deleted lines, reading up to <code>NUL</code> would yield
2707 the pathname, but if that is <code>NUL</code>, the record will show two paths.</p></div>
2708 </div>
2709 </div>
2710 <div class="sect1">
2711 <h2 id="_git">GIT</h2>
2712 <div class="sectionbody">
2713 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
2714 </div>
2715 </div>
2716 </div>
2717 <div id="footnotes"><hr /></div>
2718 <div id="footer">
2719 <div id="footer-text">
2720 Last updated
2721 2023-10-23 14:43:46 PDT
2722 </div>
2723 </div>
2724 </body>
2725 </html>