git-diff-tree.html - external/gitster/git-htmldocs.git - Git at Google

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 <body class="manpage">
 <div id="header">
 <h1>git-diff-tree(1) Manual Page</h1>
 <h2 id="_name">NAME</h2>
 <div class="sectionbody">
 <p>git-diff-tree - Compares the content and mode of blobs found via two tree objects</p>
 </div>
 </div>
 <div id="content">
 <div class="sect1">
 <h2 id="_synopsis">SYNOPSIS</h2>
 <div class="sectionbody">
 <div class="verseblock">
 <pre class="content"><em>git diff-tree</em> [--stdin] [-m] [-s] [-v] [--no-commit-id] [--pretty]
               [-t] [-r] [-c | --cc] [--combined-all-paths] [--root] [--merge-base]
               [&lt;common-diff-options&gt;] &lt;tree-ish&gt; [&lt;tree-ish&gt;] [&lt;path&gt;&#8230;&#8203;]</pre>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_description">DESCRIPTION</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Compare the content and mode of blobs found via two tree objects.</p>
 </div>
 <div class="paragraph">
 <p>If there is only one &lt;tree-ish&gt; given, the commit is compared with its parents
 (see --stdin below).</p>
 </div>
 <div class="paragraph">
 <p>Note that <em>git diff-tree</em> can use the tree encapsulated in a commit object.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_options">OPTIONS</h2>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>-p</code></dt>
 <dt class="hdlist1"><code>-u</code></dt>
 <dt class="hdlist1"><code>--patch</code></dt>
 <dd>
 <p>Generate patch (see <a href="#generate_patch_text_with_p">Generating patch text with -p</a>).</p>
 </dd>
 <dt class="hdlist1"><code>-s</code></dt>
 <dt class="hdlist1"><code>--no-patch</code></dt>
 <dd>
 <p>Suppress all output from the diff machinery.  Useful for
 commands like <code>git</code> <code>show</code> that show the patch by default to
 squelch their output, or to cancel the effect of options like
 <code>--patch</code>, <code>--stat</code> earlier on the command line in an alias.</p>
 </dd>
 <dt class="hdlist1"><code>-U</code><em>&lt;n&gt;</em></dt>
 <dt class="hdlist1"><code>--unified=</code><em>&lt;n&gt;</em></dt>
 <dd>
 <p>Generate diffs with <em>&lt;n&gt;</em> lines of context instead of
 the usual three.
 Implies <code>--patch</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--output=</code><em>&lt;file&gt;</em></dt>
 <dd>
 <p>Output to a specific file instead of stdout.</p>
 </dd>
 <dt class="hdlist1"><code>--output-indicator-new=</code><em>&lt;char&gt;</em></dt>
 <dt class="hdlist1"><code>--output-indicator-old=</code><em>&lt;char&gt;</em></dt>
 <dt class="hdlist1"><code>--output-indicator-context=</code><em>&lt;char&gt;</em></dt>
 <dd>
 <p>Specify the character used to indicate new, old or context
 lines in the generated patch. Normally they are <code>+</code>, <code>-</code> and
 ' ' respectively.</p>
 </dd>
 <dt class="hdlist1"><code>--raw</code></dt>
 <dd>
 <p>Generate the diff in raw format.
 This is the default.</p>
 </dd>
 <dt class="hdlist1"><code>--patch-with-raw</code></dt>
 <dd>
 <p>Synonym for <code>-p</code> <code>--raw</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--indent-heuristic</code></dt>
 <dd>
 <p>Enable the heuristic that shifts diff hunk boundaries to make patches
 easier to read. This is the default.</p>
 </dd>
 <dt class="hdlist1"><code>--no-indent-heuristic</code></dt>
 <dd>
 <p>Disable the indent heuristic.</p>
 </dd>
 <dt class="hdlist1"><code>--minimal</code></dt>
 <dd>
 <p>Spend extra time to make sure the smallest possible
 diff is produced.</p>
 </dd>
 <dt class="hdlist1"><code>--patience</code></dt>
 <dd>
 <p>Generate a diff using the "patience diff" algorithm.</p>
 </dd>
 <dt class="hdlist1"><code>--histogram</code></dt>
 <dd>
 <p>Generate a diff using the "histogram diff" algorithm.</p>
 </dd>
 <dt class="hdlist1"><code>--anchored=</code><em>&lt;text&gt;</em></dt>
 <dd>
 <p>Generate a diff using the "anchored diff" algorithm.</p>
 <div class="paragraph">
 <p>This option may be specified more than once.</p>
 </div>
 <div class="paragraph">
 <p>If a line exists in both the source and destination, exists only once,
 and starts with <em>&lt;text&gt;</em>, this algorithm attempts to prevent it from
 appearing as a deletion or addition in the output. It uses the "patience
 diff" algorithm internally.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--diff-algorithm=</code>(<code>patience</code>|<code>minimal</code>|<code>histogram</code>|<code>myers</code>)</dt>
 <dd>
 <p>Choose a diff algorithm. The variants are as follows:</p>
 <div class="openblock">
 <div class="content">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>default</code></dt>
 <dt class="hdlist1"><code>myers</code></dt>
 <dd>
 <p>The basic greedy diff algorithm. Currently, this is the default.</p>
 </dd>
 <dt class="hdlist1"><code>minimal</code></dt>
 <dd>
 <p>Spend extra time to make sure the smallest possible diff is
 produced.</p>
 </dd>
 <dt class="hdlist1"><code>patience</code></dt>
 <dd>
 <p>Use "patience diff" algorithm when generating patches.</p>
 </dd>
 <dt class="hdlist1"><code>histogram</code></dt>
 <dd>
 <p>This algorithm extends the patience algorithm to "support
 low-occurrence common elements".</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 <div class="paragraph">
 <p>For instance, if you configured the <code>diff.algorithm</code> variable to a
 non-default value and want to use the default one, then you
 have to use <code>--diff-algorithm=default</code> option.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--stat</code>[<code>=</code><em>&lt;width&gt;</em>[<code>,</code><em>&lt;name-width&gt;</em>[<code>,</code><em>&lt;count&gt;</em>]]]</dt>
 <dd>
 <p>Generate a diffstat. By default, as much space as necessary
 will be used for the filename part, and the rest for the graph
 part. Maximum width defaults to terminal width, or 80 columns
 if not connected to a terminal, and can be overridden by
 <em>&lt;width&gt;</em>. The width of the filename part can be limited by
 giving another width <em>&lt;name-width&gt;</em> after a comma or by setting
 <code>diff.statNameWidth=</code><em>&lt;name-width&gt;</em>. The width of the graph part can be
 limited by using <code>--stat-graph-width=</code><em>&lt;graph-width&gt;</em> or by setting
 <code>diff.statGraphWidth=</code><em>&lt;graph-width&gt;</em>. Using <code>--stat</code> or
 <code>--stat-graph-width</code> affects all commands generating a stat graph,
 while setting <code>diff.statNameWidth</code> or <code>diff.statGraphWidth</code>
 does not affect <code>git</code> <code>format-patch</code>.
 By giving a third parameter <em>&lt;count&gt;</em>, you can limit the output to
 the first <em>&lt;count&gt;</em> lines, followed by <code>...</code> if there are more.</p>
 <div class="paragraph">
 <p>These parameters can also be set individually with <code>--stat-width=</code><em>&lt;width&gt;</em>,
 <code>--stat-name-width=</code><em>&lt;name-width&gt;</em> and <code>--stat-count=</code><em>&lt;count&gt;</em>.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--compact-summary</code></dt>
 <dd>
 <p>Output a condensed summary of extended header information such
 as file creations or deletions ("new" or "gone", optionally <code>+l</code>
 if it&#8217;s a symlink) and mode changes (<code>+x</code> or <code>-x</code> for adding
 or removing executable bit respectively) in diffstat. The
 information is put between the filename part and the graph
 part. Implies <code>--stat</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--numstat</code></dt>
 <dd>
 <p>Similar to <code>--stat</code>, but shows number of added and
 deleted lines in decimal notation and pathname without
 abbreviation, to make it more machine friendly.  For
 binary files, outputs two <code>-</code> instead of saying
 <code>0</code> <code>0</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--shortstat</code></dt>
 <dd>
 <p>Output only the last line of the <code>--stat</code> format containing total
 number of modified files, as well as number of added and deleted
 lines.</p>
 </dd>
 <dt class="hdlist1"><code>-X</code> [<em>&lt;param&gt;</em><code>,..</code>.]</dt>
 <dt class="hdlist1"><code>--dirstat</code>[<code>=</code><em>&lt;param&gt;</em><code>,..</code>.]</dt>
 <dd>
 <p>Output the distribution of relative amount of changes for each
 sub-directory. The behavior of <code>--dirstat</code> can be customized by
 passing it a comma separated list of parameters.
 The defaults are controlled by the <code>diff.dirstat</code> configuration
 variable (see <a href="git-config.html">git-config(1)</a>).
 The following parameters are available:</p>
 <div class="openblock">
 <div class="content">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>changes</code></dt>
 <dd>
 <p>Compute the dirstat numbers by counting the lines that have been
 removed from the source, or added to the destination. This ignores
 the amount of pure code movements within a file.  In other words,
 rearranging lines in a file is not counted as much as other changes.
 This is the default behavior when no parameter is given.</p>
 </dd>
 <dt class="hdlist1"><code>lines</code></dt>
 <dd>
 <p>Compute the dirstat numbers by doing the regular line-based diff
 analysis, and summing the removed/added line counts. (For binary
 files, count 64-byte chunks instead, since binary files have no
 natural concept of lines). This is a more expensive <code>--dirstat</code>
 behavior than the <code>changes</code> behavior, but it does count rearranged
 lines within a file as much as other changes. The resulting output
 is consistent with what you get from the other <code>--*stat</code> options.</p>
 </dd>
 <dt class="hdlist1"><code>files</code></dt>
 <dd>
 <p>Compute the dirstat numbers by counting the number of files changed.
 Each changed file counts equally in the dirstat analysis. This is
 the computationally cheapest <code>--dirstat</code> behavior, since it does
 not have to look at the file contents at all.</p>
 </dd>
 <dt class="hdlist1"><code>cumulative</code></dt>
 <dd>
 <p>Count changes in a child directory for the parent directory as well.
 Note that when using <code>cumulative</code>, the sum of the percentages
 reported may exceed 100%. The default (non-cumulative) behavior can
 be specified with the <code>noncumulative</code> parameter.</p>
 </dd>
 <dt class="hdlist1"><em>&lt;limit&gt;</em></dt>
 <dd>
 <p>An integer parameter specifies a cut-off percent (3% by default).
 Directories contributing less than this percentage of the changes
 are not shown in the output.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 <div class="paragraph">
 <p>Example: The following will count changed files, while ignoring
 directories with less than 10% of the total amount of changed files,
 and accumulating child directory counts in the parent directories:
 <code>--dirstat=files,10,cumulative</code>.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--cumulative</code></dt>
 <dd>
 <p>Synonym for <code>--dirstat=cumulative</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--dirstat-by-file</code>[<code>=</code><em>&lt;param&gt;</em><code>,..</code>.]</dt>
 <dd>
 <p>Synonym for <code>--dirstat=files,</code><em>&lt;param&gt;</em><code>,..</code>..</p>
 </dd>
 <dt class="hdlist1"><code>--summary</code></dt>
 <dd>
 <p>Output a condensed summary of extended header information
 such as creations, renames and mode changes.</p>
 </dd>
 <dt class="hdlist1"><code>--patch-with-stat</code></dt>
 <dd>
 <p>Synonym for <code>-p</code> <code>--stat</code>.</p>
 </dd>
 <dt class="hdlist1"><code>-z</code></dt>
 <dd>
 <p>When <code>--raw</code>, <code>--numstat</code>, <code>--name-only</code> or <code>--name-status</code> has been
 given, do not munge pathnames and use NULs as output field terminators.</p>
 <div class="paragraph">
 <p>Without this option, pathnames with "unusual" characters are quoted as
 explained for the configuration variable <code>core.quotePath</code> (see
 <a href="git-config.html">git-config(1)</a>).</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--name-only</code></dt>
 <dd>
 <p>Show only the name of each changed file in the post-image tree.
 The file names are often encoded in UTF-8.
 For more information see the discussion about encoding in the <a href="git-log.html">git-log(1)</a>
 manual page.</p>
 </dd>
 <dt class="hdlist1"><code>--name-status</code></dt>
 <dd>
 <p>Show only the name(s) and status of each changed file. See the description
 of the <code>--diff-filter</code> option on what the status letters mean.
 Just like <code>--name-only</code> the file names are often encoded in UTF-8.</p>
 </dd>
 <dt class="hdlist1"><code>--submodule</code>[<code>=</code><em>&lt;format&gt;</em>]</dt>
 <dd>
 <p>Specify how differences in submodules are shown.  When specifying
 <code>--submodule=short</code> the <code>short</code> format is used.  This format just
 shows the names of the commits at the beginning and end of the range.
 When <code>--submodule</code> or <code>--submodule=log</code> is specified, the <code>log</code>
 format is used.  This format lists the commits in the range like
 <a href="git-submodule.html">git-submodule(1)</a> <code>summary</code> does.  When <code>--submodule=diff</code>
 is specified, the <code>diff</code> format is used.  This format shows an
 inline diff of the changes in the submodule contents between the
 commit range.  Defaults to <code>diff.submodule</code> or the <code>short</code> format
 if the config option is unset.</p>
 </dd>
 <dt class="hdlist1"><code>--color</code>[<code>=</code><em>&lt;when&gt;</em>]</dt>
 <dd>
 <p>Show colored diff.
 <code>--color</code> (i.e. without <code>=</code><em>&lt;when&gt;</em>) is the same as <code>--color=always</code>.
 <em>&lt;when&gt;</em> can be one of <code>always</code>, <code>never</code>, or <code>auto</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--no-color</code></dt>
 <dd>
 <p>Turn off colored diff.
 It is the same as <code>--color=never</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--color-moved</code>[<code>=</code><em>&lt;mode&gt;</em>]</dt>
 <dd>
 <p>Moved lines of code are colored differently.
 The <em>&lt;mode&gt;</em> defaults to <code>no</code> if the option is not given
 and to <code>zebra</code> if the option with no mode is given.
 The mode must be one of:</p>
 <div class="openblock">
 <div class="content">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>no</code></dt>
 <dd>
 <p>Moved lines are not highlighted.</p>
 </dd>
 <dt class="hdlist1"><code>default</code></dt>
 <dd>
 <p>Is a synonym for <code>zebra</code>. This may change to a more sensible mode
 in the future.</p>
 </dd>
 <dt class="hdlist1"><code>plain</code></dt>
 <dd>
 <p>Any line that is added in one location and was removed
 in another location will be colored with <code>color.diff.newMoved</code>.
 Similarly <code>color.diff.oldMoved</code> will be used for removed lines
 that are added somewhere else in the diff. This mode picks up any
 moved line, but it is not very useful in a review to determine
 if a block of code was moved without permutation.</p>
 </dd>
 <dt class="hdlist1"><code>blocks</code></dt>
 <dd>
 <p>Blocks of moved text of at least 20 alphanumeric characters
 are detected greedily. The detected blocks are
 painted using either the <code>color.diff.</code>(<code>old</code>|<code>new</code>)<code>Moved</code> color.
 Adjacent blocks cannot be told apart.</p>
 </dd>
 <dt class="hdlist1"><code>zebra</code></dt>
 <dd>
 <p>Blocks of moved text are detected as in <code>blocks</code> mode. The blocks
 are painted using either the <code>color.diff.</code>(<code>old</code>|<code>new</code>)<code>Moved</code> color or
 <code>color.diff.</code>(<code>old</code>|<code>new</code>)<code>MovedAlternative</code>. The change between
 the two colors indicates that a new block was detected.</p>
 </dd>
 <dt class="hdlist1"><code>dimmed-zebra</code></dt>
 <dd>
 <p>Similar to <code>zebra</code>, but additional dimming of uninteresting parts
 of moved code is performed. The bordering lines of two adjacent
 blocks are considered interesting, the rest is uninteresting.
 <code>dimmed_zebra</code> is a deprecated synonym.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 </dd>
 <dt class="hdlist1"><code>--no-color-moved</code></dt>
 <dd>
 <p>Turn off move detection. This can be used to override configuration
 settings. It is the same as <code>--color-moved=no</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--color-moved-ws=</code><em>&lt;mode&gt;</em><code>,..</code>.</dt>
 <dd>
 <p>This configures how whitespace is ignored when performing the
 move detection for <code>--color-moved</code>.
 These modes can be given as a comma separated list:</p>
 <div class="openblock">
 <div class="content">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>no</code></dt>
 <dd>
 <p>Do not ignore whitespace when performing move detection.</p>
 </dd>
 <dt class="hdlist1"><code>ignore-space-at-eol</code></dt>
 <dd>
 <p>Ignore changes in whitespace at EOL.</p>
 </dd>
 <dt class="hdlist1"><code>ignore-space-change</code></dt>
 <dd>
 <p>Ignore changes in amount of whitespace.  This ignores whitespace
 at line end, and considers all other sequences of one or
 more whitespace characters to be equivalent.</p>
 </dd>
 <dt class="hdlist1"><code>ignore-all-space</code></dt>
 <dd>
 <p>Ignore whitespace when comparing lines. This ignores differences
 even if one line has whitespace where the other line has none.</p>
 </dd>
 <dt class="hdlist1"><code>allow-indentation-change</code></dt>
 <dd>
 <p>Initially ignore any whitespace in the move detection, then
 group the moved code blocks only into a block if the change in
 whitespace is the same per line. This is incompatible with the
 other modes.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 </dd>
 <dt class="hdlist1"><code>--no-color-moved-ws</code></dt>
 <dd>
 <p>Do not ignore whitespace when performing move detection. This can be
 used to override configuration settings. It is the same as
 <code>--color-moved-ws=no</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--word-diff</code>[<code>=</code><em>&lt;mode&gt;</em>]</dt>
 <dd>
 <p>By default, words are delimited by whitespace; see
 <code>--word-diff-regex</code> below.  The <em>&lt;mode&gt;</em> defaults to <code>plain</code>, and
 must be one of:</p>
 <div class="openblock">
 <div class="content">
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>color</code></dt>
 <dd>
 <p>Highlight changed words using only colors.  Implies <code>--color</code>.</p>
 </dd>
 <dt class="hdlist1"><code>plain</code></dt>
 <dd>
 <p>Show words as [<code>-removed-</code>] and {<code>added</code>}.  Makes no
 attempts to escape the delimiters if they appear in the input,
 so the output may be ambiguous.</p>
 </dd>
 <dt class="hdlist1"><code>porcelain</code></dt>
 <dd>
 <p>Use a special line-based format intended for script
 consumption.  Added/removed/unchanged runs are printed in the
 usual unified diff format, starting with a <code>+</code>/<code>-</code>/` `
 character at the beginning of the line and extending to the
 end of the line.  Newlines in the input are represented by a
 tilde <code>~</code> on a line of its own.</p>
 </dd>
 <dt class="hdlist1"><code>none</code></dt>
 <dd>
 <p>Disable word diff again.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 <div class="paragraph">
 <p>Note that despite the name of the first mode, color is used to
 highlight the changed parts in all modes if enabled.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--word-diff-regex=</code><em>&lt;regex&gt;</em></dt>
 <dd>
 <p>Use <em>&lt;regex&gt;</em> to decide what a word is, instead of considering
 runs of non-whitespace to be a word.  Also implies
 <code>--word-diff</code> unless it was already enabled.</p>
 <div class="paragraph">
 <p>Every non-overlapping match of the
 <em>&lt;regex&gt;</em> is considered a word.  Anything between these matches is
 considered whitespace and ignored(!) for the purposes of finding
 differences.  You may want to append |[<code>^</code>[<code>:space:</code>]] to your regular
 expression to make sure that it matches all non-whitespace characters.
 A match that contains a newline is silently truncated(!) at the
 newline.</p>
 </div>
 <div class="paragraph">
 <p>For example, <code>--word-diff-regex=.</code> will treat each character as a word
 and, correspondingly, show differences character by character.</p>
 </div>
 <div class="paragraph">
 <p>The regex can also be set via a diff driver or configuration option, see
 <a href="gitattributes.html">gitattributes(5)</a> or <a href="git-config.html">git-config(1)</a>.  Giving it explicitly
 overrides any diff driver or configuration setting.  Diff drivers
 override configuration settings.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--color-words</code>[<code>=</code><em>&lt;regex&gt;</em>]</dt>
 <dd>
 <p>Equivalent to <code>--word-diff=color</code> plus (if a regex was
 specified) <code>--word-diff-regex=</code><em>&lt;regex&gt;</em>.</p>
 </dd>
 <dt class="hdlist1"><code>--no-renames</code></dt>
 <dd>
 <p>Turn off rename detection, even when the configuration
 file gives the default to do so.</p>
 </dd>
 <dt class="hdlist1"><code>--rename-empty</code></dt>
 <dt class="hdlist1"><code>--no-rename-empty</code></dt>
 <dd>
 <p>Whether to use empty blobs as rename source.</p>
 </dd>
 <dt class="hdlist1"><code>--check</code></dt>
 <dd>
 <p>Warn if changes introduce conflict markers or whitespace errors.
 What are considered whitespace errors is controlled by <code>core.whitespace</code>
 configuration.  By default, trailing whitespaces (including
 lines that consist solely of whitespaces) and a space character
 that is immediately followed by a tab character inside the
 initial indent of the line are considered whitespace errors.
 Exits with non-zero status if problems are found. Not compatible
 with <code>--exit-code</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--ws-error-highlight=</code><em>&lt;kind&gt;</em></dt>
 <dd>
 <p>Highlight whitespace errors in the <code>context</code>, <code>old</code> or <code>new</code>
 lines of the diff.  Multiple values are separated by comma,
 <code>none</code> resets previous values, <code>default</code> reset the list to
 <code>new</code> and <code>all</code> is a shorthand for <code>old,new,context</code>.  When
 this option is not given, and the configuration variable
 <code>diff.wsErrorHighlight</code> is not set, only whitespace errors in
 <code>new</code> lines are highlighted. The whitespace errors are colored
 with <code>color.diff.whitespace</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--full-index</code></dt>
 <dd>
 <p>Instead of the first handful of characters, show the full
 pre- and post-image blob object names on the "index"
 line when generating patch format output.</p>
 </dd>
 <dt class="hdlist1"><code>--binary</code></dt>
 <dd>
 <p>In addition to <code>--full-index</code>, output a binary diff that
 can be applied with <code>git-apply</code>.
 Implies <code>--patch</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--abbrev</code>[<code>=</code><em>&lt;n&gt;</em>]</dt>
 <dd>
 <p>Instead of showing the full 40-byte hexadecimal object
 name in diff-raw format output and diff-tree header
 lines, show the shortest prefix that is at least <em>&lt;n&gt;</em>
 hexdigits long that uniquely refers the object.
 In diff-patch output format, <code>--full-index</code> takes higher
 precedence, i.e. if <code>--full-index</code> is specified, full blob
 names will be shown regardless of <code>--abbrev</code>.
 Non default number of digits can be specified with <code>--abbrev=</code><em>&lt;n&gt;</em>.</p>
 </dd>
 <dt class="hdlist1"><code>-B</code>[<em>&lt;n&gt;</em>][<code>/</code><em>&lt;m&gt;</em>]</dt>
 <dt class="hdlist1"><code>--break-rewrites</code>[<code>=</code>[<em>&lt;n&gt;</em>][<code>/</code><em>&lt;m&gt;</em>]]</dt>
 <dd>
 <p>Break complete rewrite changes into pairs of delete and
 create. This serves two purposes:</p>
 <div class="paragraph">
 <p>It affects the way a change that amounts to a total rewrite of a file
 not as a series of deletion and insertion mixed together with a very
 few lines that happen to match textually as the context, but as a
 single deletion of everything old followed by a single insertion of
 everything new, and the number <em>&lt;m&gt;</em> controls this aspect of the <code>-B</code>
 option (defaults to 60%). <code>-B/70%</code> specifies that less than 30% of the
 original should remain in the result for Git to consider it a total
 rewrite (i.e. otherwise the resulting patch will be a series of
 deletion and insertion mixed together with context lines).</p>
 </div>
 <div class="paragraph">
 <p>When used with <code>-M</code>, a totally-rewritten file is also considered as the
 source of a rename (usually <code>-M</code> only considers a file that disappeared
 as the source of a rename), and the number <em>&lt;n&gt;</em> controls this aspect of
 the <code>-B</code> option (defaults to 50%). <code>-B20%</code> specifies that a change with
 addition and deletion compared to 20% or more of the file&#8217;s size are
 eligible for being picked up as a possible source of a rename to
 another file.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>-M</code>[<em>&lt;n&gt;</em>]</dt>
 <dt class="hdlist1"><code>--find-renames</code>[<code>=</code><em>&lt;n&gt;</em>]</dt>
 <dd>
 <p>Detect renames.
 If <em>&lt;n&gt;</em> is specified, it is a threshold on the similarity
 index (i.e. amount of addition/deletions compared to the
 file&#8217;s size). For example, <code>-M90%</code> means Git should consider a
 delete/add pair to be a rename if more than 90% of the file
 hasn&#8217;t changed.  Without a <code>%</code> sign, the number is to be read as
 a fraction, with a decimal point before it.  I.e., <code>-M5</code> becomes
 0.5, and is thus the same as <code>-M50%</code>.  Similarly, <code>-M05</code> is
 the same as <code>-M5%</code>.  To limit detection to exact renames, use
 <code>-M100%</code>.  The default similarity index is 50%.</p>
 </dd>
 <dt class="hdlist1"><code>-C</code>[<em>&lt;n&gt;</em>]</dt>
 <dt class="hdlist1"><code>--find-copies</code>[<code>=</code><em>&lt;n&gt;</em>]</dt>
 <dd>
 <p>Detect copies as well as renames.  See also <code>--find-copies-harder</code>.
 If <em>&lt;n&gt;</em> is specified, it has the same meaning as for <code>-M</code><em>&lt;n&gt;</em>.</p>
 </dd>
 <dt class="hdlist1"><code>--find-copies-harder</code></dt>
 <dd>
 <p>For performance reasons, by default, <code>-C</code> option finds copies only
 if the original file of the copy was modified in the same
 changeset.  This flag makes the command
 inspect unmodified files as candidates for the source of
 copy.  This is a very expensive operation for large
 projects, so use it with caution.  Giving more than one
 <code>-C</code> option has the same effect.</p>
 </dd>
 <dt class="hdlist1"><code>-D</code></dt>
 <dt class="hdlist1"><code>--irreversible-delete</code></dt>
 <dd>
 <p>Omit the preimage for deletes, i.e. print only the header but not
 the diff between the preimage and <code>/dev/null</code>. The resulting patch
 is not meant to be applied with <code>patch</code> or <code>git</code> <code>apply</code>; this is
 solely for people who want to just concentrate on reviewing the
 text after the change. In addition, the output obviously lacks
 enough information to apply such a patch in reverse, even manually,
 hence the name of the option.</p>
 <div class="paragraph">
 <p>When used together with <code>-B</code>, omit also the preimage in the deletion part
 of a delete/create pair.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>-l</code><em>&lt;num&gt;</em></dt>
 <dd>
 <p>The <code>-M</code> and <code>-C</code> options involve some preliminary steps that
 can detect subsets of renames/copies cheaply, followed by an
 exhaustive fallback portion that compares all remaining
 unpaired destinations to all relevant sources.  (For renames,
 only remaining unpaired sources are relevant; for copies, all
 original sources are relevant.)  For N sources and
 destinations, this exhaustive check is O(N^2).  This option
 prevents the exhaustive portion of rename/copy detection from
 running if the number of source/destination files involved
 exceeds the specified number.  Defaults to <code>diff.renameLimit</code>.
 Note that a value of 0 is treated as unlimited.</p>
 </dd>
 <dt class="hdlist1"><code>--diff-filter=</code>[(<code>A</code>|<code>C</code>|<code>D</code>|<code>M</code>|<code>R</code>|<code>T</code>|<code>U</code>|<code>X</code>|<code>B</code>)<code>...</code>[<code>*</code>]]</dt>
 <dd>
 <p>Select only files that are Added (<code>A</code>), Copied (<code>C</code>),
 Deleted (<code>D</code>), Modified (<code>M</code>), Renamed (<code>R</code>), have their
 type (i.e. regular file, symlink, submodule, &#8230;&#8203;) changed (<code>T</code>),
 are Unmerged (<code>U</code>), are
 Unknown (<code>X</code>), or have had their pairing Broken (<code>B</code>).
 Any combination of the filter characters (including none) can be used.
 When <code>*</code> (All-or-none) is added to the combination, all
 paths are selected if there is any file that matches
 other criteria in the comparison; if there is no file
 that matches other criteria, nothing is selected.</p>
 <div class="paragraph">
 <p>Also, these upper-case letters can be downcased to exclude.  E.g.
 <code>--diff-filter=ad</code> excludes added and deleted paths.</p>
 </div>
 <div class="paragraph">
 <p>Note that not all diffs can feature all types. For instance, copied and
 renamed entries cannot appear if detection for those types is disabled.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>-S</code><em>&lt;string&gt;</em></dt>
 <dd>
 <p>Look for differences that change the number of occurrences of
 the specified <em>&lt;string&gt;</em> (i.e. addition/deletion) in a file.
 Intended for the scripter&#8217;s use.</p>
 <div class="paragraph">
 <p>It is useful when you&#8217;re looking for an exact block of code (like a
 struct), and want to know the history of that block since it first
 came into being: use the feature iteratively to feed the interesting
 block in the preimage back into <code>-S</code>, and keep going until you get the
 very first version of the block.</p>
 </div>
 <div class="paragraph">
 <p>Binary files are searched as well.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>-G</code><em>&lt;regex&gt;</em></dt>
 <dd>
 <p>Look for differences whose patch text contains added/removed
 lines that match <em>&lt;regex&gt;</em>.</p>
 <div class="paragraph">
 <p>To illustrate the difference between <code>-S</code><em>&lt;regex&gt;</em> <code>--pickaxe-regex</code> and
 <code>-G</code><em>&lt;regex&gt;</em>, consider a commit with the following diff in the same
 file:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>+    return frotz(nitfol, two-&gt;ptr, 1, 0);
 ...
 -    hit = frotz(nitfol, mf2.ptr, 1, 0);</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>While <code>git</code> <code>log</code> <code>-G</code>"frotz\(<code>nitfol</code>" will show this commit, <code>git</code> <code>log</code>
 <code>-S</code>"frotz\(<code>nitfol</code>" <code>--pickaxe-regex</code> will not (because the number of
 occurrences of that string did not change).</p>
 </div>
 <div class="paragraph">
 <p>Unless <code>--text</code> is supplied patches of binary files without a textconv
 filter will be ignored.</p>
 </div>
 <div class="paragraph">
 <p>See the <em>pickaxe</em> entry in <a href="gitdiffcore.html">gitdiffcore(7)</a> for more
 information.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--find-object=</code><em>&lt;object-id&gt;</em></dt>
 <dd>
 <p>Look for differences that change the number of occurrences of
 the specified object. Similar to <code>-S</code>, just the argument is different
 in that it doesn&#8217;t search for a specific string but for a specific
 object id.</p>
 <div class="paragraph">
 <p>The object can be a blob or a submodule commit. It implies the <code>-t</code> option in
 <code>git-log</code> to also find trees.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--pickaxe-all</code></dt>
 <dd>
 <p>When <code>-S</code> or <code>-G</code> finds a change, show all the changes in that
 changeset, not just the files that contain the change
 in <em>&lt;string&gt;</em>.</p>
 </dd>
 <dt class="hdlist1"><code>--pickaxe-regex</code></dt>
 <dd>
 <p>Treat the <em>&lt;string&gt;</em> given to <code>-S</code> as an extended POSIX regular
 expression to match.</p>
 </dd>
 <dt class="hdlist1"><code>-O</code><em>&lt;orderfile&gt;</em></dt>
 <dd>
 <p>Control the order in which files appear in the output.
 This overrides the <code>diff.orderFile</code> configuration variable
 (see <a href="git-config.html">git-config(1)</a>).  To cancel <code>diff.orderFile</code>,
 use <code>-O/dev/null</code>.</p>
 <div class="paragraph">
 <p>The output order is determined by the order of glob patterns in
 <em>&lt;orderfile&gt;</em>.
 All files with pathnames that match the first pattern are output
 first, all files with pathnames that match the second pattern (but not
 the first) are output next, and so on.
 All files with pathnames that do not match any pattern are output
 last, as if there was an implicit match-all pattern at the end of the
 file.
 If multiple pathnames have the same rank (they match the same pattern
 but no earlier patterns), their output order relative to each other is
 the normal order.</p>
 </div>
 <div class="paragraph">
 <p><em>&lt;orderfile&gt;</em> is parsed as follows:</p>
 </div>
 <div class="openblock">
 <div class="content">
 <div class="ulist">
 <ul>
 <li>
 <p>Blank lines are ignored, so they can be used as separators for
 readability.</p>
 </li>
 <li>
 <p>Lines starting with a hash ("#") are ignored, so they can be used
 for comments.  Add a backslash ("<code>\</code>") to the beginning of the
 pattern if it starts with a hash.</p>
 </li>
 <li>
 <p>Each other line contains a single pattern.</p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="paragraph">
 <p>Patterns have the same syntax and semantics as patterns used for
 <code>fnmatch</code>(3) without the <code>FNM_PATHNAME</code> flag, except a pathname also
 matches a pattern if removing any number of the final pathname
 components matches the pattern.  For example, the pattern "<code>foo*bar</code>"
 matches "<code>fooasdfbar</code>" and "<code>foo/bar/baz/asdf</code>" but not "<code>foobarx</code>".</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--skip-to=</code><em>&lt;file&gt;</em></dt>
 <dt class="hdlist1"><code>--rotate-to=</code><em>&lt;file&gt;</em></dt>
 <dd>
 <p>Discard the files before the named <em>&lt;file&gt;</em> from the output
 (i.e. <em>skip to</em>), or move them to the end of the output
 (i.e. <em>rotate to</em>).  These options were invented primarily for the use
 of the <code>git</code> <code>difftool</code> command, and may not be very useful
 otherwise.</p>
 </dd>
 <dt class="hdlist1"><code>-R</code></dt>
 <dd>
 <p>Swap two inputs; that is, show differences from index or
 on-disk file to tree contents.</p>
 </dd>
 <dt class="hdlist1"><code>--relative</code>[<code>=</code><em>&lt;path&gt;</em>]</dt>
 <dt class="hdlist1"><code>--no-relative</code></dt>
 <dd>
 <p>When run from a subdirectory of the project, it can be
 told to exclude changes outside the directory and show
 pathnames relative to it with this option.  When you are
 not in a subdirectory (e.g. in a bare repository), you
 can name which subdirectory to make the output relative
 to by giving a <em>&lt;path&gt;</em> as an argument.
 <code>--no-relative</code> can be used to countermand both <code>diff.relative</code> config
 option and previous <code>--relative</code>.</p>
 </dd>
 <dt class="hdlist1"><code>-a</code></dt>
 <dt class="hdlist1"><code>--text</code></dt>
 <dd>
 <p>Treat all files as text.</p>
 </dd>
 <dt class="hdlist1"><code>--ignore-cr-at-eol</code></dt>
 <dd>
 <p>Ignore carriage-return at the end of line when doing a comparison.</p>
 </dd>
 <dt class="hdlist1"><code>--ignore-space-at-eol</code></dt>
 <dd>
 <p>Ignore changes in whitespace at EOL.</p>
 </dd>
 <dt class="hdlist1"><code>-b</code></dt>
 <dt class="hdlist1"><code>--ignore-space-change</code></dt>
 <dd>
 <p>Ignore changes in amount of whitespace.  This ignores whitespace
 at line end, and considers all other sequences of one or
 more whitespace characters to be equivalent.</p>
 </dd>
 <dt class="hdlist1"><code>-w</code></dt>
 <dt class="hdlist1"><code>--ignore-all-space</code></dt>
 <dd>
 <p>Ignore whitespace when comparing lines.  This ignores
 differences even if one line has whitespace where the other
 line has none.</p>
 </dd>
 <dt class="hdlist1"><code>--ignore-blank-lines</code></dt>
 <dd>
 <p>Ignore changes whose lines are all blank.</p>
 </dd>
 <dt class="hdlist1"><code>-I</code><em>&lt;regex&gt;</em></dt>
 <dt class="hdlist1"><code>--ignore-matching-lines=</code><em>&lt;regex&gt;</em></dt>
 <dd>
 <p>Ignore changes whose all lines match <em>&lt;regex&gt;</em>.  This option may
 be specified more than once.</p>
 </dd>
 <dt class="hdlist1"><code>--inter-hunk-context=</code><em>&lt;number&gt;</em></dt>
 <dd>
 <p>Show the context between diff hunks, up to the specified <em>&lt;number&gt;</em>
 of lines, thereby fusing hunks that are close to each other.
 Defaults to <code>diff.interHunkContext</code> or 0 if the config option
 is unset.</p>
 </dd>
 <dt class="hdlist1"><code>-W</code></dt>
 <dt class="hdlist1"><code>--function-context</code></dt>
 <dd>
 <p>Show whole function as context lines for each change.
 The function names are determined in the same way as
 <code>git</code> <code>diff</code> works out patch hunk headers (see "Defining a
 custom hunk-header" in <a href="gitattributes.html">gitattributes(5)</a>).</p>
 </dd>
 <dt class="hdlist1"><code>--exit-code</code></dt>
 <dd>
 <p>Make the program exit with codes similar to <code>diff</code>(1).
 That is, it exits with 1 if there were differences and
 0 means no differences.</p>
 </dd>
 <dt class="hdlist1"><code>--quiet</code></dt>
 <dd>
 <p>Disable all output of the program. Implies <code>--exit-code</code>.
 Disables execution of external diff helpers whose exit code
 is not trusted, i.e. their respective configuration option
 <code>diff.trustExitCode</code> or <code>diff.</code><em>&lt;driver&gt;</em>.<code>trustExitCode</code> or
 environment variable <code>GIT_EXTERNAL_DIFF_TRUST_EXIT_CODE</code> is
 false.</p>
 </dd>
 <dt class="hdlist1"><code>--ext-diff</code></dt>
 <dd>
 <p>Allow an external diff helper to be executed. If you set an
 external diff driver with <a href="gitattributes.html">gitattributes(5)</a>, you need
 to use this option with <a href="git-log.html">git-log(1)</a> and friends.</p>
 </dd>
 <dt class="hdlist1"><code>--no-ext-diff</code></dt>
 <dd>
 <p>Disallow external diff drivers.</p>
 </dd>
 <dt class="hdlist1"><code>--textconv</code></dt>
 <dt class="hdlist1"><code>--no-textconv</code></dt>
 <dd>
 <p>Allow (or disallow) external text conversion filters to be run
 when comparing binary files. See <a href="gitattributes.html">gitattributes(5)</a> for
 details. Because textconv filters are typically a one-way
 conversion, the resulting diff is suitable for human
 consumption, but cannot be applied. For this reason, textconv
 filters are enabled by default only for <a href="git-diff.html">git-diff(1)</a> and
 <a href="git-log.html">git-log(1)</a>, but not for <a href="git-format-patch.html">git-format-patch(1)</a> or
 diff plumbing commands.</p>
 </dd>
 <dt class="hdlist1"><code>--ignore-submodules</code>[<code>=</code>(<code>none</code>|<code>untracked</code>|<code>dirty</code>|<code>all</code>)]</dt>
 <dd>
 <p>Ignore changes to submodules in the diff generation. <code>all</code> is the default.
 Using <code>none</code> will consider the submodule modified when it either contains
 untracked or modified files or its <code>HEAD</code> differs from the commit recorded
 in the superproject and can be used to override any settings of the
 <code>ignore</code> option in <a href="git-config.html">git-config(1)</a> or <a href="gitmodules.html">gitmodules(5)</a>. When
 <code>untracked</code> is used submodules are not considered dirty when they only
 contain untracked content (but they are still scanned for modified
 content). Using <code>dirty</code> ignores all changes to the work tree of submodules,
 only changes to the commits stored in the superproject are shown (this was
 the behavior until 1.7.0). Using <code>all</code> hides all changes to submodules.</p>
 </dd>
 <dt class="hdlist1"><code>--src-prefix=</code><em>&lt;prefix&gt;</em></dt>
 <dd>
 <p>Show the given source <em>&lt;prefix&gt;</em> instead of "a/".</p>
 </dd>
 <dt class="hdlist1"><code>--dst-prefix=</code><em>&lt;prefix&gt;</em></dt>
 <dd>
 <p>Show the given destination <em>&lt;prefix&gt;</em> instead of "b/".</p>
 </dd>
 <dt class="hdlist1"><code>--no-prefix</code></dt>
 <dd>
 <p>Do not show any source or destination prefix.</p>
 </dd>
 <dt class="hdlist1"><code>--default-prefix</code></dt>
 <dd>
 <p>Use the default source and destination prefixes ("a/" and "b/").
 This overrides configuration variables such as <code>diff.noprefix</code>,
 <code>diff.srcPrefix</code>, <code>diff.dstPrefix</code>, and <code>diff.mnemonicPrefix</code>
 (see <a href="git-config.html">git-config(1)</a>).</p>
 </dd>
 <dt class="hdlist1"><code>--line-prefix=</code><em>&lt;prefix&gt;</em></dt>
 <dd>
 <p>Prepend an additional <em>&lt;prefix&gt;</em> to every line of output.</p>
 </dd>
 <dt class="hdlist1"><code>--ita-invisible-in-index</code></dt>
 <dd>
 <p>By default entries added by <code>git</code> <code>add</code> <code>-N</code> appear as an existing
 empty file in <code>git</code> <code>diff</code> and a new file in <code>git</code> <code>diff</code> <code>--cached</code>.
 This option makes the entry appear as a new file in <code>git</code> <code>diff</code>
 and non-existent in <code>git</code> <code>diff</code> <code>--cached</code>. This option could be
 reverted with <code>--ita-visible-in-index</code>. Both options are
 experimental and could be removed in future.</p>
 </dd>
 <dt class="hdlist1">--max-depth=&lt;depth&gt;</dt>
 <dd>
 <p>For each pathspec given on command line, descend at most <em>&lt;depth&gt;</em>
 levels of directories. A value of <code>-1</code> means no limit.
 Cannot be combined with wildcards in the pathspec.
 Given a tree containing <code>foo/bar/baz</code>, the following list shows the
 matches generated by each set of options:</p>
 <div class="openblock">
 <div class="content">
 <div class="ulist">
 <ul>
 <li>
 <p><code>--max-depth=0</code> <code>--</code> <code>foo</code>: <code>foo</code></p>
 </li>
 <li>
 <p><code>--max-depth=1</code> <code>--</code> <code>foo</code>: <code>foo/bar</code></p>
 </li>
 <li>
 <p><code>--max-depth=1</code> <code>--</code> <code>foo/bar</code>: <code>foo/bar/baz</code></p>
 </li>
 <li>
 <p><code>--max-depth=1</code> <code>--</code> <code>foo</code> <code>foo/bar</code>: <code>foo/bar/baz</code></p>
 </li>
 <li>
 <p><code>--max-depth=2</code> <code>--</code> <code>foo</code>: <code>foo/bar/baz</code></p>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="paragraph">
 <p>If no pathspec is given, the depth is measured as if all
 top-level entries were specified. Note that this is different
 than measuring from the root, in that <code>--max-depth=0</code> would
 still return <code>foo</code>. This allows you to still limit depth while
 asking for a subset of the top-level entries.</p>
 </div>
 <div class="paragraph">
 <p>Note that this option is only supported for diffs between tree objects,
 not against the index or working tree.</p>
 </div>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p>For more detailed explanation on these common options, see also
 <a href="gitdiffcore.html">gitdiffcore(7)</a>.</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1">&lt;tree-ish&gt;</dt>
 <dd>
 <p>The id of a tree object.</p>
 </dd>
 <dt class="hdlist1">&lt;path&gt;&#8230;&#8203;</dt>
 <dd>
 <p>If provided, the results are limited to a subset of files
 matching one of the provided pathspecs.</p>
 </dd>
 <dt class="hdlist1">-r</dt>
 <dd>
 <p>Recurse into sub-trees.</p>
 </dd>
 <dt class="hdlist1">-t</dt>
 <dd>
 <p>Show tree entry itself as well as subtrees.  Implies -r.</p>
 </dd>
 <dt class="hdlist1">--root</dt>
 <dd>
 <p>When <code>--root</code> is specified the initial commit will be shown as a big
 creation event. This is equivalent to a diff against the NULL tree.</p>
 </dd>
 <dt class="hdlist1">--merge-base</dt>
 <dd>
 <p>Instead of comparing the &lt;tree-ish&gt;s directly, use the merge
 base between the two &lt;tree-ish&gt;s as the "before" side.  There
 must be two &lt;tree-ish&gt;s given and they must both be commits.</p>
 </dd>
 <dt class="hdlist1">--stdin</dt>
 <dd>
 <p>When <code>--stdin</code> is specified, the command does not take
 &lt;tree-ish&gt; arguments from the command line.  Instead, it
 reads lines containing either two &lt;tree&gt;, one &lt;commit&gt;, or a
 list of &lt;commit&gt; from its standard input.  (Use a single space
 as separator.)</p>
 <div class="paragraph">
 <p>When two trees are given, it compares the first tree with the second.
 When a single commit is given, it compares the commit with its
 parents.  The remaining commits, when given, are used as if they are
 parents of the first commit.</p>
 </div>
 <div class="paragraph">
 <p>When comparing two trees, the ID of both trees (separated by a space
 and terminated by a newline) is printed before the difference.  When
 comparing commits, the ID of the first (or only) commit, followed by a
 newline, is printed.</p>
 </div>
 <div class="paragraph">
 <p>The following flags further affect the behavior when comparing
 commits (but not trees).</p>
 </div>
 </dd>
 <dt class="hdlist1">-m</dt>
 <dd>
 <p>By default, <em>git diff-tree --stdin</em> does not show
 differences for merge commits.  With this flag, it shows
 differences to that commit from all of its parents. See
 also <code>-c</code>.</p>
 </dd>
 <dt class="hdlist1">-s</dt>
 <dd>
 <p>By default, <em>git diff-tree --stdin</em> shows differences,
 either in machine-readable form (without <code>-p</code>) or in patch
 form (with <code>-p</code>).  This output can be suppressed.  It is
 only useful with the <code>-v</code> flag.</p>
 </dd>
 <dt class="hdlist1">-v</dt>
 <dd>
 <p>This flag causes <em>git diff-tree --stdin</em> to also show
 the commit message before the differences.</p>
 </dd>
 <dt class="hdlist1"><code>--pretty</code>[<code>=</code><em>&lt;format&gt;</em>]</dt>
 <dt class="hdlist1"><code>--format=</code><em>&lt;format&gt;</em></dt>
 <dd>
 <p>Pretty-print the contents of the commit logs in a given format,
 where <em>&lt;format&gt;</em> can be one of <code>oneline</code>, <code>short</code>, <code>medium</code>,
 <code>full</code>, <code>fuller</code>, <code>reference</code>, <code>email</code>, <code>raw</code>, <code>format:</code><em>&lt;string&gt;</em>
 and <code>tformat:</code><em>&lt;string&gt;</em>.  When <em>&lt;format&gt;</em> is none of the above,
 and has <code>%</code><em>&lt;placeholder&gt;</em> in it, it acts as if
 <code>--pretty=tformat:</code><em>&lt;format&gt;</em> were given.</p>
 <div class="paragraph">
 <p>See the "PRETTY FORMATS" section for some additional details for each
 format.  When <code>=</code><em>&lt;format&gt;</em> part is omitted, it defaults to <code>medium</code>.</p>
 </div>
 <div class="admonitionblock note">
 <table>
 <tr>
 <td class="icon">
 <div class="title">Note</div>
 </td>
 <td class="content">
 you can specify the default pretty format in the repository
 configuration (see <a href="git-config.html">git-config(1)</a>).
 </td>
 </tr>
 </table>
 </div>
 </dd>
 <dt class="hdlist1"><code>--abbrev-commit</code></dt>
 <dd>
 <p>Instead of showing the full 40-byte hexadecimal commit object
 name, show a prefix that names the object uniquely.
 <code>--abbrev=</code><em>&lt;n&gt;</em> (which also modifies diff output, if it is displayed)
 option can be used to specify the minimum length of the prefix.</p>
 <div class="paragraph">
 <p>This should make <code>--pretty=oneline</code> a whole lot more readable for
 people using 80-column terminals.</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--no-abbrev-commit</code></dt>
 <dd>
 <p>Show the full 40-byte hexadecimal commit object name. This negates
 <code>--abbrev-commit</code>, either explicit or implied by other options such
 as <code>--oneline</code>. It also overrides the <code>log.abbrevCommit</code> variable.</p>
 </dd>
 <dt class="hdlist1"><code>--oneline</code></dt>
 <dd>
 <p>This is a shorthand for <code>--pretty=oneline</code> <code>--abbrev-commit</code>
 used together.</p>
 </dd>
 <dt class="hdlist1"><code>--encoding=</code><em>&lt;encoding&gt;</em></dt>
 <dd>
 <p>Commit objects record the character encoding used for the log message
 in their encoding header; this option can be used to tell the
 command to re-code the commit log message in the encoding
 preferred by the user.  For non plumbing commands this
 defaults to UTF-8. Note that if an object claims to be encoded
 in <code>X</code> and we are outputting in <code>X</code>, we will output the object
 verbatim; this means that invalid sequences in the original
 commit may be copied to the output. Likewise, if iconv(3) fails
 to convert the commit, we will quietly output the original
 object verbatim.</p>
 </dd>
 <dt class="hdlist1"><code>--expand-tabs=</code><em>&lt;n&gt;</em></dt>
 <dt class="hdlist1"><code>--expand-tabs</code></dt>
 <dt class="hdlist1"><code>--no-expand-tabs</code></dt>
 <dd>
 <p>Perform a tab expansion (replace each tab with enough spaces
 to fill to the next display column that is a multiple of <em>&lt;n&gt;</em>)
 in the log message before showing it in the output.
 <code>--expand-tabs</code> is a short-hand for <code>--expand-tabs=8</code>, and
 <code>--no-expand-tabs</code> is a short-hand for <code>--expand-tabs=0</code>,
 which disables tab expansion.</p>
 <div class="paragraph">
 <p>By default, tabs are expanded in pretty formats that indent the log
 message by 4 spaces (i.e.  <code>medium</code>, which is the default, <code>full</code>,
 and <code>fuller</code>).</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--notes</code>[<code>=</code><em>&lt;ref&gt;</em>]</dt>
 <dd>
 <p>	Show the notes (see <a href="git-notes.html">git-notes(1)</a>) that annotate the
 	commit, when showing the commit log message.
 This is the default for <code>git</code> <code>log</code>, <code>git</code> <code>show</code> and <code>git</code> <code>whatchanged</code>
 commands when there is no <code>--pretty</code>, <code>--format</code>, or <code>--oneline</code> option given
 on the command line.</p>
 <div class="paragraph">
 <p>By default, the notes shown are from the notes refs listed in the
 <code>core.notesRef</code> and <code>notes.displayRef</code> variables (or corresponding
 environment overrides). See <a href="git-config.html">git-config(1)</a> for more details.</p>
 </div>
 <div class="paragraph">
 <p>With an optional <em>&lt;ref&gt;</em> argument, use the ref to find the notes
 to display.  The ref can specify the full refname when it begins
 with <code>refs/notes/</code>; when it begins with <code>notes/</code>, <code>refs/</code> and otherwise
 <code>refs/notes/</code> is prefixed to form the full name of the ref.</p>
 </div>
 <div class="paragraph">
 <p>Multiple <code>--notes</code> options can be combined to control which notes are
 being displayed. Examples: "<code>--notes=foo</code>" will show only notes from
 <code>refs/notes/foo</code>; "<code>--notes=foo</code> <code>--notes</code>" will show both notes from
 "refs/notes/foo" and from the default notes ref(s).</p>
 </div>
 </dd>
 <dt class="hdlist1"><code>--no-notes</code></dt>
 <dd>
 <p>Do not show notes. This negates the above <code>--notes</code> option, by
 resetting the list of notes refs from which notes are shown.
 Options are parsed in the order given on the command line, so e.g.
 "<code>--notes</code> <code>--notes=foo</code> <code>--no-notes</code> <code>--notes=bar</code>" will only show notes
 from <code>refs/notes/bar</code>.</p>
 </dd>
 <dt class="hdlist1"><code>--show-notes-by-default</code></dt>
 <dd>
 <p>Show the default notes unless options for displaying specific
 notes are given.</p>
 </dd>
 <dt class="hdlist1"><code>--show-notes</code>[<code>=</code><em>&lt;ref&gt;</em>]</dt>
 <dt class="hdlist1"><code>--standard-notes</code></dt>
 <dt class="hdlist1"><code>--no-standard-notes</code></dt>
 <dd>
 <p>These options are deprecated. Use the above <code>--notes</code>/<code>--no-notes</code>
 options instead.</p>
 </dd>
 <dt class="hdlist1"><code>--show-signature</code></dt>
 <dd>
 <p>Check the validity of a signed commit object by passing the signature
 to <code>gpg</code> <code>--verify</code> and show the output.</p>
 </dd>
 <dt class="hdlist1">--no-commit-id</dt>
 <dd>
 <p><em>git diff-tree</em> outputs a line with the commit ID when
 applicable.  This flag suppresses the commit ID output.</p>
 </dd>
 <dt class="hdlist1">-c</dt>
 <dd>
 <p>This flag changes the way a merge commit is displayed
 (which means it is useful only when the command is given
 one &lt;tree-ish&gt;, or <code>--stdin</code>).  It shows the differences
 from each of the parents to the merge result simultaneously
 instead of showing pairwise diff between a parent and the
 result one at a time (which is what the <code>-m</code> option does).
 Furthermore, it lists only files which were modified
 from all parents.</p>
 </dd>
 <dt class="hdlist1">--cc</dt>
 <dd>
 <p>This flag changes the way a merge commit patch is displayed,
 in a similar way to the <code>-c</code> option. It implies the <code>-c</code>
 and <code>-p</code> options and further compresses the patch output
 by omitting uninteresting hunks whose contents in the parents
 have only two variants and the merge result picks one of them
 without modification.  When all hunks are uninteresting, the commit
 itself and the commit log message are not shown, just like in any other
 "empty diff" case.</p>
 </dd>
 <dt class="hdlist1">--combined-all-paths</dt>
 <dd>
 <p>This flag causes combined diffs (used for merge commits) to
 list the name of the file from all parents.  It thus only has
 effect when -c or --cc are specified, and is likely only
 useful if filename changes are detected (i.e. when either
 rename or copy detection have been requested).</p>
 </dd>
 <dt class="hdlist1">--always</dt>
 <dd>
 <p>Show the commit itself and the commit log message even
 if the diff itself is empty.</p>
 </dd>
 </dl>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_pretty_formats">PRETTY FORMATS</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>If the commit is a merge, and if the pretty-format
 is not <code>oneline</code>, <code>email</code> or <code>raw</code>, an additional line is
 inserted before the <code>Author:</code> line.  This line begins with
 "Merge: " and the hashes of ancestral commits are printed,
 separated by spaces.  Note that the listed commits may not
 necessarily be the list of the <em>direct</em> parent commits if you
 have limited your view of history: for example, if you are
 only interested in changes related to a certain directory or
 file.</p>
 </div>
 <div class="paragraph">
 <p>There are several built-in formats, and you can define
 additional formats by setting a pretty.&lt;name&gt;
 config option to either another format name, or a
 <code>format:</code> string, as described below (see
 <a href="git-config.html">git-config(1)</a>). Here are the details of the
 built-in formats:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>oneline</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;hash&gt; &lt;title-line&gt;</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This is designed to be as compact as possible.</p>
 </div>
 </li>
 <li>
 <p><code>short</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>commit &lt;hash&gt;
 Author: &lt;author&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;title-line&gt;</pre>
 </div>
 </div>
 </li>
 <li>
 <p><code>medium</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>commit &lt;hash&gt;
 Author: &lt;author&gt;
 Date:   &lt;author-date&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;title-line&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;full-commit-message&gt;</pre>
 </div>
 </div>
 </li>
 <li>
 <p><code>full</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>commit &lt;hash&gt;
 Author: &lt;author&gt;
 Commit: &lt;committer&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;title-line&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;full-commit-message&gt;</pre>
 </div>
 </div>
 </li>
 <li>
 <p><code>fuller</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>commit &lt;hash&gt;
 Author:     &lt;author&gt;
 AuthorDate: &lt;author-date&gt;
 Commit:     &lt;committer&gt;
 CommitDate: &lt;committer-date&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;title-line&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;full-commit-message&gt;</pre>
 </div>
 </div>
 </li>
 <li>
 <p><code>reference</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;abbrev-hash&gt; (&lt;title-line&gt;, &lt;short-author-date&gt;)</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This format is used to refer to another commit in a commit message and
 is the same as <code>--pretty=</code>'format:%C(<code>auto</code>)<code>%h</code> (<code>%s,</code> <code>%ad</code>)'.  By default,
 the date is formatted with <code>--date=short</code> unless another <code>--date</code> option
 is explicitly specified.  As with any <code>format:</code> with format
 placeholders, its output is not affected by other options like
 <code>--decorate</code> and <code>--walk-reflogs</code>.</p>
 </div>
 </li>
 <li>
 <p><code>email</code></p>
 <div class="literalblock">
 <div class="content">
 <pre>From &lt;hash&gt; &lt;date&gt;
 From: &lt;author&gt;
 Date: &lt;author-date&gt;
 Subject: [PATCH] &lt;title-line&gt;</pre>
 </div>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>&lt;full-commit-message&gt;</pre>
 </div>
 </div>
 </li>
 <li>
 <p><code>mboxrd</code></p>
 <div class="paragraph">
 <p>Like <code>email</code>, but lines in the commit message starting with "From "
 (preceded by zero or more "&gt;") are quoted with "&gt;" so they aren&#8217;t
 confused as starting a new commit.</p>
 </div>
 </li>
 <li>
 <p><code>raw</code></p>
 <div class="paragraph">
 <p>The <code>raw</code> format shows the entire commit exactly as
 stored in the commit object.  Notably, the hashes are
 displayed in full, regardless of whether <code>--abbrev</code> or
 <code>--no-abbrev</code> are used, and <em>parents</em> information show the
 true parent commits, without taking grafts or history
 simplification into account. Note that this format affects the way
 commits are displayed, but not the way the diff is shown e.g. with
 <code>git</code> <code>log</code> <code>--raw</code>. To get full object names in a raw diff format,
 use <code>--no-abbrev</code>.</p>
 </div>
 </li>
 <li>
 <p><code>format:</code><em>&lt;format-string&gt;</em></p>
 <div class="paragraph">
 <p>The <code>format:</code><em>&lt;format-string&gt;</em> format allows you to specify which information
 you want to show. It works a little bit like printf format,
 with the notable exception that you get a newline with <code>%n</code>
 instead of <code>\n</code>.</p>
 </div>
 <div class="paragraph">
 <p>E.g, <em>format:"The author of %h was %an, %ar%nThe title was &gt;&gt;%s&lt;&lt;%n"</em>
 would show something like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>The author of fe6e0ee was Junio C Hamano, 23 hours ago
 The title was &gt;&gt;t4119: test autocomputing -p&lt;n&gt; for traditional diff input.&lt;&lt;</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The placeholders are:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p>Placeholders that expand to a single literal character:</p>
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>%n</code></dt>
 <dd>
 <p>newline</p>
 </dd>
 <dt class="hdlist1"><code>%%</code></dt>
 <dd>
 <p>a raw <code>%</code></p>
 </dd>
 <dt class="hdlist1"><code>%x00</code></dt>
 <dd>
 <p><code>%x</code> followed by two hexadecimal digits is replaced with a
 byte with the hexadecimal digits' value (we will call this
 "literal formatting code" in the rest of this document).</p>
 </dd>
 </dl>
 </div>
 </li>
 <li>
 <p>Placeholders that affect formatting of later placeholders:</p>
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>%Cred</code></dt>
 <dd>
 <p>switch color to red</p>
 </dd>
 <dt class="hdlist1"><code>%Cgreen</code></dt>
 <dd>
 <p>switch color to green</p>
 </dd>
 <dt class="hdlist1"><code>%Cblue</code></dt>
 <dd>
 <p>switch color to blue</p>
 </dd>
 <dt class="hdlist1"><code>%Creset</code></dt>
 <dd>
 <p>reset color</p>
 </dd>
 <dt class="hdlist1"><code>%C</code>(<em>&lt;spec&gt;</em>)</dt>
 <dd>
 <p>color specification, as described under Values in the
 "CONFIGURATION FILE" section of <a href="git-config.html">git-config(1)</a>.  By
 default, colors are shown only when enabled for log output
 (by <code>color.diff</code>, <code>color.ui</code>, or <code>--color</code>, and respecting
 the <code>auto</code> settings of the former if we are going to a
 terminal). <code>%C</code>(<code>auto,</code><em>&lt;spec&gt;</em>) is accepted as a historical
 synonym for the default (e.g., <code>%C</code>(<code>auto,red</code>)). Specifying
 <code>%C</code>(<code>always,</code><em>&lt;spec&gt;</em>) will show the colors even when color is
 not otherwise enabled (though consider just using
 <code>--color=always</code> to enable color for the  whole output,
 including this format and anything else git might color).
 <code>auto</code> alone (i.e. <code>%C</code>(<code>auto</code>)) will turn on auto coloring
 on the next placeholders until the color is switched
 again.</p>
 </dd>
 <dt class="hdlist1"><code>%m</code></dt>
 <dd>
 <p>left (&lt;), right (&gt;) or boundary (<code>-</code>) mark</p>
 </dd>
 <dt class="hdlist1"><code>%w</code>([<em>&lt;w&gt;</em>[<code>,</code><em>&lt;i1&gt;</em>[<code>,</code><em>&lt;i2&gt;</em>]]])</dt>
 <dd>
 <p>switch line wrapping, like the <code>-w</code> option of
 <a href="git-shortlog.html">git-shortlog(1)</a>.</p>
 </dd>
 <dt class="hdlist1"><code>%</code>&lt;(<em>&lt;n&gt;</em>[<code>,</code>(<code>trunc</code>|<code>ltrunc</code>|<code>mtrunc</code>)])</dt>
 <dd>
 <p>make the next placeholder take at
 least N column widths, padding spaces on
 the right if necessary.  Optionally
 truncate (with ellipsis <code>..</code>) at the left (ltrunc) <code>..</code><code>ft</code>,
 the middle (mtrunc) <code>mi</code><code>..</code><code>le</code>, or the end
 (trunc) <code>rig..</code>, if the output is longer than
 <em>&lt;n&gt;</em> columns.
 Note 1: that truncating
 only works correctly with <em>&lt;n&gt;</em> &gt;= 2.
 Note 2: spaces around the <em>&lt;n&gt;</em> and <em>&lt;m&gt;</em> (see below)
 values are optional.
 Note 3: Emojis and other wide characters
 will take two display columns, which may
 over-run column boundaries.
 Note 4: decomposed character combining marks
 may be misplaced at padding boundaries.</p>
 </dd>
 <dt class="hdlist1"><code>%</code>&lt;|(<em>&lt;m&gt;</em> )</dt>
 <dd>
 <p>make the next placeholder take at least until <em>&lt;m&gt;</em> th
 display column, padding spaces on the right if necessary.
 Use negative <em>&lt;m&gt;</em> values for column positions measured
 from the right hand edge of the terminal window.</p>
 </dd>
 <dt class="hdlist1"><code>%</code>&gt;(<em>&lt;n&gt;</em>)</dt>
 <dt class="hdlist1"><code>%</code>&gt;|(<em>&lt;m&gt;</em>)</dt>
 <dd>
 <p>similar to <code>%</code>&lt;(<em>&lt;n&gt;</em>), <code>%</code>&lt;|(<em>&lt;m&gt;</em>) respectively,
 but padding spaces on the left</p>
 </dd>
 <dt class="hdlist1"><code>%</code>&gt;&gt;(<em>&lt;n&gt;</em>)</dt>
 <dt class="hdlist1"><code>%</code>&gt;&gt;|(<em>&lt;m&gt;</em>)</dt>
 <dd>
 <p>similar to <code>%</code>&gt;(<em>&lt;n&gt;</em>), <code>%</code>&gt;|(<em>&lt;m&gt;</em>)
 respectively, except that if the next
 placeholder takes more spaces than given and
 there are spaces on its left, use those
 spaces</p>
 </dd>
 <dt class="hdlist1"><code>%</code>&gt;&lt;(<em>&lt;n&gt;</em>)</dt>
 <dt class="hdlist1"><code>%</code>&gt;&lt;|(<em>&lt;m&gt;</em>)</dt>
 <dd>
 <p>similar to <code>%</code>&lt;(<em>&lt;n&gt;</em>), <code>%</code>&lt;|(<em>&lt;m&gt;</em>)
 respectively, but padding both sides
 (i.e. the text is centered)</p>
 </dd>
 </dl>
 </div>
 </li>
 <li>
 <p>Placeholders that expand to information extracted from the commit:</p>
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>%H</code></dt>
 <dd>
 <p>commit hash</p>
 </dd>
 <dt class="hdlist1"><code>%h</code></dt>
 <dd>
 <p>abbreviated commit hash</p>
 </dd>
 <dt class="hdlist1"><code>%T</code></dt>
 <dd>
 <p>tree hash</p>
 </dd>
 <dt class="hdlist1"><code>%t</code></dt>
 <dd>
 <p>abbreviated tree hash</p>
 </dd>
 <dt class="hdlist1"><code>%P</code></dt>
 <dd>
 <p>parent hashes</p>
 </dd>
 <dt class="hdlist1"><code>%p</code></dt>
 <dd>
 <p>abbreviated parent hashes</p>
 </dd>
 <dt class="hdlist1"><code>%an</code></dt>
 <dd>
 <p>author name</p>
 </dd>
 <dt class="hdlist1"><code>%aN</code></dt>
 <dd>
 <p>author name (respecting .mailmap, see <a href="git-shortlog.html">git-shortlog(1)</a>
 or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%ae</code></dt>
 <dd>
 <p>author email</p>
 </dd>
 <dt class="hdlist1"><code>%aE</code></dt>
 <dd>
 <p>author email (respecting .mailmap, see <a href="git-shortlog.html">git-shortlog(1)</a>
 or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%al</code></dt>
 <dd>
 <p>author email local-part (the part before the <code>@</code> sign)</p>
 </dd>
 <dt class="hdlist1"><code>%aL</code></dt>
 <dd>
 <p>author local-part (see <code>%al</code>) respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%ad</code></dt>
 <dd>
 <p>author date (format respects --date= option)</p>
 </dd>
 <dt class="hdlist1"><code>%aD</code></dt>
 <dd>
 <p>author date, RFC2822 style</p>
 </dd>
 <dt class="hdlist1"><code>%ar</code></dt>
 <dd>
 <p>author date, relative</p>
 </dd>
 <dt class="hdlist1"><code>%at</code></dt>
 <dd>
 <p>author date, UNIX timestamp</p>
 </dd>
 <dt class="hdlist1"><code>%ai</code></dt>
 <dd>
 <p>author date, ISO 8601-like format</p>
 </dd>
 <dt class="hdlist1"><code>%aI</code></dt>
 <dd>
 <p>author date, strict ISO 8601 format</p>
 </dd>
 <dt class="hdlist1"><code>%as</code></dt>
 <dd>
 <p>author date, short format (<code>YYYY-MM-DD</code>)</p>
 </dd>
 <dt class="hdlist1"><code>%ah</code></dt>
 <dd>
 <p>author date, human style (like the <code>--date=human</code> option of
 <a href="git-rev-list.html">git-rev-list(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%cn</code></dt>
 <dd>
 <p>committer name</p>
 </dd>
 <dt class="hdlist1"><code>%cN</code></dt>
 <dd>
 <p>committer name (respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%ce</code></dt>
 <dd>
 <p>committer email</p>
 </dd>
 <dt class="hdlist1"><code>%cE</code></dt>
 <dd>
 <p>committer email (respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%cl</code></dt>
 <dd>
 <p>committer email local-part (the part before the <code>@</code> sign)</p>
 </dd>
 <dt class="hdlist1"><code>%cL</code></dt>
 <dd>
 <p>committer local-part (see <code>%cl</code>) respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%cd</code></dt>
 <dd>
 <p>committer date (format respects --date= option)</p>
 </dd>
 <dt class="hdlist1"><code>%cD</code></dt>
 <dd>
 <p>committer date, RFC2822 style</p>
 </dd>
 <dt class="hdlist1"><code>%cr</code></dt>
 <dd>
 <p>committer date, relative</p>
 </dd>
 <dt class="hdlist1"><code>%ct</code></dt>
 <dd>
 <p>committer date, UNIX timestamp</p>
 </dd>
 <dt class="hdlist1"><code>%ci</code></dt>
 <dd>
 <p>committer date, ISO 8601-like format</p>
 </dd>
 <dt class="hdlist1"><code>%cI</code></dt>
 <dd>
 <p>committer date, strict ISO 8601 format</p>
 </dd>
 <dt class="hdlist1"><code>%cs</code></dt>
 <dd>
 <p>committer date, short format (<code>YYYY-MM-DD</code>)</p>
 </dd>
 <dt class="hdlist1"><code>%ch</code></dt>
 <dd>
 <p>committer date, human style (like the <code>--date=human</code> option of
 <a href="git-rev-list.html">git-rev-list(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%d</code></dt>
 <dd>
 <p>ref names, like the --decorate option of <a href="git-log.html">git-log(1)</a></p>
 </dd>
 <dt class="hdlist1"><code>%D</code></dt>
 <dd>
 <p>ref names without the " (", ")" wrapping.</p>
 </dd>
 <dt class="hdlist1"><code>%</code>(<code>decorate</code>[<code>:</code><em>&lt;option&gt;</em><code>,..</code>.])</dt>
 <dd>
 <p>ref names with custom decorations. The <code>decorate</code> string may be followed by a
 colon and zero or more comma-separated options. Option values may contain
 literal formatting codes. These must be used for commas (<code>%x2C</code>) and closing
 parentheses (<code>%x29</code>), due to their role in the option syntax.</p>
 <div class="ulist">
 <ul>
 <li>
 <p><code>prefix=</code><em>&lt;value&gt;</em>: Shown before the list of ref names.  Defaults to "&#160;(".</p>
 </li>
 <li>
 <p><code>suffix=</code><em>&lt;value&gt;</em>: Shown after the list of ref names.  Defaults to ")".</p>
 </li>
 <li>
 <p><code>separator=</code><em>&lt;value&gt;</em>: Shown between ref names.  Defaults to "<code>,</code>&#160;".</p>
 </li>
 <li>
 <p><code>pointer=</code><em>&lt;value&gt;</em>: Shown between HEAD and the branch it points to, if any.
 Defaults to "&#160;<code>-</code>&gt;&#160;".</p>
 </li>
 <li>
 <p><code>tag=</code><em>&lt;value&gt;</em>: Shown before tag names. Defaults to "<code>tag:</code>&#160;".</p>
 </li>
 </ul>
 </div>
 </dd>
 </dl>
 </div>
 </li>
 </ul>
 </div>
 <div class="openblock">
 <div class="content">
 <div class="paragraph">
 <p>For example, to produce decorations with no wrapping
 or tag annotations, and spaces as separators:</p>
 </div>
 <div class="paragraph">
 <p><code>%</code>(<code>decorate:prefix=,suffix=,tag=,separator=</code> )</p>
 </div>
 </div>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>%</code>(<code>describe</code>[<code>:</code><em>&lt;option&gt;</em><code>,..</code>.])</dt>
 <dd>
 <p>human-readable name, like <a href="git-describe.html">git-describe(1)</a>; empty string for
 undescribable commits.  The <code>describe</code> string may be followed by a colon and
 zero or more comma-separated options.  Descriptions can be inconsistent when
 tags are added or removed at the same time.</p>
 <div class="ulist">
 <ul>
 <li>
 <p><code>tags</code>[<code>=</code><em>&lt;bool-value&gt;</em>]: Instead of only considering annotated tags,
 consider lightweight tags as well.</p>
 </li>
 <li>
 <p><code>abbrev=</code><em>&lt;number&gt;</em>: Instead of using the default number of hexadecimal digits
 (which will vary according to the number of objects in the repository with a
 default of 7) of the abbreviated object name, use &lt;number&gt; digits, or as many
 digits as needed to form a unique object name.</p>
 </li>
 <li>
 <p><code>match=</code><em>&lt;pattern&gt;</em>: Only consider tags matching the given
 <code>glob</code>(<code>7</code>) <em>&lt;pattern&gt;</em>, excluding the <code>refs/tags/</code> prefix.</p>
 </li>
 <li>
 <p><code>exclude=</code><em>&lt;pattern&gt;</em>: Do not consider tags matching the given
 <code>glob</code>(<code>7</code>) <em>&lt;pattern&gt;</em>, excluding the <code>refs/tags/</code> prefix.</p>
 </li>
 </ul>
 </div>
 </dd>
 <dt class="hdlist1"><code>%S</code></dt>
 <dd>
 <p>ref name given on the command line by which the commit was reached
 (like <code>git</code> <code>log</code> <code>--source</code>), only works with <code>git</code> <code>log</code></p>
 </dd>
 <dt class="hdlist1"><code>%e</code></dt>
 <dd>
 <p>encoding</p>
 </dd>
 <dt class="hdlist1"><code>%s</code></dt>
 <dd>
 <p>subject</p>
 </dd>
 <dt class="hdlist1"><code>%f</code></dt>
 <dd>
 <p>sanitized subject line, suitable for a filename</p>
 </dd>
 <dt class="hdlist1"><code>%b</code></dt>
 <dd>
 <p>body</p>
 </dd>
 <dt class="hdlist1"><code>%B</code></dt>
 <dd>
 <p>raw body (unwrapped subject and body)</p>
 </dd>
 <dt class="hdlist1"><code>%N</code></dt>
 <dd>
 <p>commit notes</p>
 </dd>
 <dt class="hdlist1"><code>%GG</code></dt>
 <dd>
 <p>raw verification message from GPG for a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%G</code>?</dt>
 <dd>
 <p>show "G" for a good (valid) signature,
 "B" for a bad signature,
 "U" for a good signature with unknown validity,
 "X" for a good signature that has expired,
 "Y" for a good signature made by an expired key,
 "R" for a good signature made by a revoked key,
 "E" if the signature cannot be checked (e.g. missing key)
 and "N" for no signature</p>
 </dd>
 <dt class="hdlist1"><code>%GS</code></dt>
 <dd>
 <p>show the name of the signer for a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%GK</code></dt>
 <dd>
 <p>show the key used to sign a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%GF</code></dt>
 <dd>
 <p>show the fingerprint of the key used to sign a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%GP</code></dt>
 <dd>
 <p>show the fingerprint of the primary key whose subkey was used
 to sign a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%GT</code></dt>
 <dd>
 <p>show the trust level for the key used to sign a signed commit</p>
 </dd>
 <dt class="hdlist1"><code>%gD</code></dt>
 <dd>
 <p>reflog selector, e.g., <code>refs/stash@</code>{1} or <code>refs/stash@</code>{2
 <code>minutes</code> <code>ago</code>}; the format follows the rules described for the
 <code>-g</code> option. The portion before the <code>@</code> is the refname as
 given on the command line (so <code>git</code> <code>log</code> <code>-g</code> <code>refs/heads/master</code>
 would yield <code>refs/heads/master@</code>{0}).</p>
 </dd>
 <dt class="hdlist1"><code>%gd</code></dt>
 <dd>
 <p>shortened reflog selector; same as <code>%gD</code>, but the refname
 portion is shortened for human readability (so
 <code>refs/heads/master</code> becomes just <code>master</code>).</p>
 </dd>
 <dt class="hdlist1"><code>%gn</code></dt>
 <dd>
 <p>reflog identity name</p>
 </dd>
 <dt class="hdlist1"><code>%gN</code></dt>
 <dd>
 <p>reflog identity name (respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%ge</code></dt>
 <dd>
 <p>reflog identity email</p>
 </dd>
 <dt class="hdlist1"><code>%gE</code></dt>
 <dd>
 <p>reflog identity email (respecting .mailmap, see
 <a href="git-shortlog.html">git-shortlog(1)</a> or <a href="git-blame.html">git-blame(1)</a>)</p>
 </dd>
 <dt class="hdlist1"><code>%gs</code></dt>
 <dd>
 <p>reflog subject</p>
 </dd>
 <dt class="hdlist1"><code>%</code>(<code>trailers</code>[<code>:</code><em>&lt;option&gt;</em><code>,..</code>.])</dt>
 <dd>
 <p>display the trailers of the body as interpreted by
 <a href="git-interpret-trailers.html">git-interpret-trailers(1)</a>. The <code>trailers</code> string may be followed by
 a colon and zero or more comma-separated options. If any option is provided
 multiple times, the last occurrence wins.</p>
 <div class="ulist">
 <ul>
 <li>
 <p><code>key=</code><em>&lt;key&gt;</em>: only show trailers with specified &lt;key&gt;. Matching is done
 case-insensitively and trailing colon is optional. If option is
 given multiple times trailer lines matching any of the keys are
 shown. This option automatically enables the <code>only</code> option so that
 non-trailer lines in the trailer block are hidden. If that is not
 desired it can be disabled with <code>only=false</code>.  E.g.,
 <code>%</code>(<code>trailers:key=Reviewed-by</code>) shows trailer lines with key
 <code>Reviewed-by</code>.</p>
 </li>
 <li>
 <p><code>only</code>[<code>=</code><em>&lt;bool&gt;</em>]: select whether non-trailer lines from the trailer
 block should be included.</p>
 </li>
 <li>
 <p><code>separator=</code><em>&lt;sep&gt;</em>: specify the separator inserted between trailer
 lines. Defaults to a line feed character. The string &lt;sep&gt; may contain
 the literal formatting codes described above. To use comma as
 separator one must use <code>%x2C</code> as it would otherwise be parsed as
 next option. E.g., <code>%</code>(<code>trailers:key=Ticket,separator=%x2C</code> )
 shows all trailer lines whose key is "Ticket" separated by a comma
 and a space.</p>
 </li>
 <li>
 <p><code>unfold</code>[<code>=</code><em>&lt;bool&gt;</em>]: make it behave as if interpret-trailer&#8217;s <code>--unfold</code>
 option was given. E.g.,
 <code>%</code>(<code>trailers:only,unfold=true</code>) unfolds and shows all trailer lines.</p>
 </li>
 <li>
 <p><code>keyonly</code>[<code>=</code><em>&lt;bool&gt;</em>]: only show the key part of the trailer.</p>
 </li>
 <li>
 <p><code>valueonly</code>[<code>=</code><em>&lt;bool&gt;</em>]: only show the value part of the trailer.</p>
 </li>
 <li>
 <p><code>key_value_separator=</code><em>&lt;sep&gt;</em>: specify the separator inserted between
 the key and value of each trailer. Defaults to ": ". Otherwise it
 shares the same semantics as <code>separator=</code><em>&lt;sep&gt;</em> above.</p>
 </li>
 </ul>
 </div>
 </dd>
 </dl>
 </div>
 </li>
 </ul>
 </div>
 <div class="admonitionblock note">
 <table>
 <tr>
 <td class="icon">
 <div class="title">Note</div>
 </td>
 <td class="content">
 Some placeholders may depend on other options given to the
 revision traversal engine. For example, the <code>%g*</code> reflog options will
 insert an empty string unless we are traversing reflog entries (e.g., by
 <code>git</code> <code>log</code> <code>-g</code>). The <code>%d</code> and <code>%D</code> placeholders will use the "short"
 decoration format if <code>--decorate</code> was not already provided on the command
 line.
 </td>
 </tr>
 </table>
 </div>
 <div class="paragraph">
 <p>The boolean options accept an optional value [<code>=</code><em>&lt;bool-value&gt;</em>]. The
 values taken by <code>--type=bool</code> <a href="git-config.html">git-config(1)</a>, like <code>yes</code> and <code>off</code>,
 are all accepted.  Giving a boolean option without <code>=</code><em>&lt;value&gt;</em> is
 equivalent to giving it with <code>=true</code>.</p>
 </div>
 <div class="paragraph">
 <p>If you add a <code>+</code> (plus sign) after <code>%</code> of a placeholder, a line-feed
 is inserted immediately before the expansion if and only if the
 placeholder expands to a non-empty string.</p>
 </div>
 <div class="paragraph">
 <p>If you add a <code>-</code> (minus sign) after <code>%</code> of a placeholder, all consecutive
 line-feeds immediately preceding the expansion are deleted if and only if the
 placeholder expands to an empty string.</p>
 </div>
 <div class="paragraph">
 <p>If you add a ' ' (space) after <code>%</code> of a placeholder, a space
 is inserted immediately before the expansion if and only if the
 placeholder expands to a non-empty string.</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>tformat:</code></p>
 <div class="paragraph">
 <p>The <code>tformat:</code> format works exactly like <code>format:</code>, except that it
 provides "terminator" semantics instead of "separator" semantics. In
 other words, each commit has the message terminator character (usually a
 newline) appended, rather than a separator placed between entries.
 This means that the final entry of a single-line format will be properly
 terminated with a new line, just as the "oneline" format does.
 For example:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>$ git log -2 --pretty=format:%h 4da45bef \
   | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
 4da45be
 7134973 -- NO NEWLINE

 $ git log -2 --pretty=tformat:%h 4da45bef \
   | perl -pe '$_ .= " -- NO NEWLINE\n" unless /\n/'
 4da45be
 7134973</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>In addition, any unrecognized string that has a <code>%</code> in it is interpreted
 as if it has <code>tformat:</code> in front of it.  For example, these two are
 equivalent:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>$ git log -2 --pretty=tformat:%h 4da45bef
 $ git log -2 --pretty=%h 4da45bef</pre>
 </div>
 </div>
 </li>
 </ul>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_raw_output_format">Raw output format</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>The raw output format from <code>git-diff-index</code>, <code>git-diff-tree</code>,
 <code>git-diff-files</code> and <code>git</code> <code>diff</code> <code>--raw</code> are very similar.</p>
 </div>
 <div class="paragraph">
 <p>These commands all compare two sets of things; what is
 compared differs:</p>
 </div>
 <div class="dlist">
 <dl>
 <dt class="hdlist1"><code>git-diff-index</code> <em>&lt;tree-ish&gt;</em></dt>
 <dd>
 <p>compares the <em>&lt;tree-ish&gt;</em> and the files on the filesystem.</p>
 </dd>
 <dt class="hdlist1"><code>git-diff-index</code> <code>--cached</code> <em>&lt;tree-ish&gt;</em></dt>
 <dd>
 <p>compares the <em>&lt;tree-ish&gt;</em> and the index.</p>
 </dd>
 <dt class="hdlist1"><code>git-diff-tree</code> [<code>-r</code>] <em>&lt;tree-ish-1&gt;</em> <em>&lt;tree-ish-2&gt;</em> [<em>&lt;pattern&gt;</em>...]</dt>
 <dd>
 <p>compares the trees named by the two arguments.</p>
 </dd>
 <dt class="hdlist1"><code>git-diff-files</code> [<em>&lt;pattern&gt;</em>...]</dt>
 <dd>
 <p>compares the index and the files on the filesystem.</p>
 </dd>
 </dl>
 </div>
 <div class="paragraph">
 <p>The <code>git-diff-tree</code> command begins its output by printing the hash of
 what is being compared. After that, all the commands print one output
 line per changed file.</p>
 </div>
 <div class="paragraph">
 <p>An output line is formatted this way:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>in-place edit  :100644 100644 bcd1234 0123456 M file0
 copy-edit      :100644 100644 abcd123 1234567 C68 file1 file2
 rename-edit    :100644 100644 abcd123 1234567 R86 file1 file3
 create         :000000 100644 0000000 1234567 A file4
 delete         :100644 000000 1234567 0000000 D file5
 unmerged       :000000 000000 0000000 0000000 U file6</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>That is, from the left to the right:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>a colon.</p>
 </li>
 <li>
 <p>mode for "src"; 000000 if creation or unmerged.</p>
 </li>
 <li>
 <p>a space.</p>
 </li>
 <li>
 <p>mode for "dst"; 000000 if deletion or unmerged.</p>
 </li>
 <li>
 <p>a space.</p>
 </li>
 <li>
 <p>sha1 for "src"; 0{40} if creation or unmerged.</p>
 </li>
 <li>
 <p>a space.</p>
 </li>
 <li>
 <p>sha1 for "dst"; 0{40} if deletion, unmerged or "work tree out of sync with the index".</p>
 </li>
 <li>
 <p>a space.</p>
 </li>
 <li>
 <p>status, followed by optional "score" number.</p>
 </li>
 <li>
 <p>a tab or a NUL when <code>-z</code> option is used.</p>
 </li>
 <li>
 <p>path for "src"</p>
 </li>
 <li>
 <p>a tab or a NUL when <code>-z</code> option is used; only exists for C or R.</p>
 </li>
 <li>
 <p>path for "dst"; only exists for C or R.</p>
 </li>
 <li>
 <p>an LF or a NUL when <code>-z</code> option is used, to terminate the record.</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>Possible status letters are:</p>
 </div>
 <div class="ulist">
 <ul>
 <li>
 <p><code>A</code>: addition of a file</p>
 </li>
 <li>
 <p><code>C</code>: copy of a file into a new one</p>
 </li>
 <li>
 <p><code>D</code>: deletion of a file</p>
 </li>
 <li>
 <p><code>M</code>: modification of the contents or mode of a file</p>
 </li>
 <li>
 <p><code>R</code>: renaming of a file</p>
 </li>
 <li>
 <p><code>T</code>: change in the type of the file (regular file, symbolic link or submodule)</p>
 </li>
 <li>
 <p><code>U</code>: file is unmerged (you must complete the merge before it can
 be committed)</p>
 </li>
 <li>
 <p><code>X</code>: "unknown" change type (most probably a bug, please report it)</p>
 </li>
 </ul>
 </div>
 <div class="paragraph">
 <p>Status letters <code>C</code> and <code>R</code> are always followed by a score (denoting the
 percentage of similarity between the source and target of the move or
 copy).  Status letter <code>M</code> may be followed by a score (denoting the
 percentage of dissimilarity) for file rewrites.</p>
 </div>
 <div class="paragraph">
 <p>The sha1 for "dst" is shown as all 0&#8217;s if a file on the filesystem
 is out of sync with the index.</p>
 </div>
 <div class="paragraph">
 <p>Example:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>:100644 100644 5be4a4a 0000000 M file.c</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Without the <code>-z</code> option, pathnames with "unusual" characters are
 quoted as explained for the configuration variable <code>core.quotePath</code>
 (see <a href="git-config.html">git-config(1)</a>).  Using <code>-z</code> the filename is output
 verbatim and the line is terminated by a NUL byte.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_diff_format_for_merges">diff format for merges</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p><code>git-diff-tree</code>, <code>git-diff-files</code> and <code>git-diff</code> <code>--raw</code>
 can take <code>-c</code> or <code>--cc</code> option
 to generate diff output also for merge commits.  The output differs
 from the format described above in the following way:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>there is a colon for each parent</p>
 </li>
 <li>
 <p>there are more "src" modes and "src" sha1</p>
 </li>
 <li>
 <p>status is concatenated status characters for each parent</p>
 </li>
 <li>
 <p>no optional "score" number</p>
 </li>
 <li>
 <p>tab-separated pathname(s) of the file</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>For <code>-c</code> and <code>--cc</code>, only the destination or final path is shown even
 if the file was renamed on any side of history.  With
 <code>--combined-all-paths</code>, the name of the path in each parent is shown
 followed by the name of the path in the merge commit.</p>
 </div>
 <div class="paragraph">
 <p>Examples for <code>-c</code> and <code>--cc</code> without <code>--combined-all-paths</code>:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>::100644 100644 100644 fabadb8 cc95eb0 4866510 MM       desc.c
 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM       bar.sh
 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR       phooey.c</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Examples when <code>--combined-all-paths</code> added to either <code>-c</code> or <code>--cc</code>:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>::100644 100644 100644 fabadb8 cc95eb0 4866510 MM       desc.c  desc.c  desc.c
 ::100755 100755 100755 52b7a2d 6d1ac04 d2ac7d7 RM       foo.sh  bar.sh  bar.sh
 ::100644 100644 100644 e07d6c5 9042e82 ee91881 RR       fooey.c fuey.c  phooey.c</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Note that <em>combined diff</em> lists only files which were modified from
 all parents.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="generate_patch_text_with_p">Generating patch text with -p</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Running
 <a href="git-diff.html">git-diff(1)</a>,
 <a href="git-log.html">git-log(1)</a>,
 <a href="git-show.html">git-show(1)</a>,
 <a href="git-diff-index.html">git-diff-index(1)</a>,
 <a href="git-diff-tree.html">git-diff-tree(1)</a>, or
 <a href="git-diff-files.html">git-diff-files(1)</a>
 with the <code>-p</code> option produces patch text.
 You can customize the creation of patch text via the
 <code>GIT_EXTERNAL_DIFF</code> and the <code>GIT_DIFF_OPTS</code> environment variables
 (see <a href="git.html">git(1)</a>), and the <code>diff</code> attribute (see <a href="gitattributes.html">gitattributes(5)</a>).</p>
 </div>
 <div class="paragraph">
 <p>What the <code>-p</code> option produces is slightly different from the traditional
 diff format:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>It is preceded by a "git diff" header that looks like this:</p>
 <div class="literalblock">
 <div class="content">
 <pre>diff --git a/file1 b/file2</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The <code>a/</code> and <code>b/</code> filenames are the same unless rename/copy is
 involved.  Especially, even for a creation or a deletion,
 <code>/dev/null</code> is <em>not</em> used in place of the <code>a/</code> or <code>b/</code> filenames.</p>
 </div>
 <div class="paragraph">
 <p>When a rename/copy is involved, <code>file1</code> and <code>file2</code> show the
 name of the source file of the rename/copy and the name of
 the file that the rename/copy produces, respectively.</p>
 </div>
 </li>
 <li>
 <p>It is followed by one or more extended header lines:</p>
 <div class="verseblock">
 <pre class="content"><code>old</code> <code>mode</code> <em>&lt;mode&gt;</em>
 <code>new</code> <code>mode</code> <em>&lt;mode&gt;</em>
 <code>deleted</code> <code>file</code> <code>mode</code> <em>&lt;mode&gt;</em>
 <code>new</code> <code>file</code> <code>mode</code> <em>&lt;mode&gt;</em>
 <code>copy</code> <code>from</code> <em>&lt;path&gt;</em>
 <code>copy</code> <code>to</code> <em>&lt;path&gt;</em>
 <code>rename</code> <code>from</code> <em>&lt;path&gt;</em>
 <code>rename</code> <code>to</code> <em>&lt;path&gt;</em>
 <code>similarity</code> <code>index</code> <em>&lt;number&gt;</em>
 <code>dissimilarity</code> <code>index</code> <em>&lt;number&gt;</em>
 <code>index</code> <em>&lt;hash&gt;</em><code>..</code><em>&lt;hash&gt;</em> <em>&lt;mode&gt;</em></pre>
 </div>
 <div class="paragraph">
 <p>File modes <em>&lt;mode&gt;</em> are printed as 6-digit octal numbers including the file type
 and file permission bits.</p>
 </div>
 <div class="paragraph">
 <p>Path names in extended headers do not include the <code>a/</code> and <code>b/</code> prefixes.</p>
 </div>
 <div class="paragraph">
 <p>The similarity index is the percentage of unchanged lines, and
 the dissimilarity index is the percentage of changed lines.  It
 is a rounded down integer, followed by a percent sign.  The
 similarity index value of 100% is thus reserved for two equal
 files, while 100% dissimilarity means that no line from the old
 file made it into the new one.</p>
 </div>
 <div class="paragraph">
 <p>The index line includes the blob object names before and after the change.
 The <em>&lt;mode&gt;</em> is included if the file mode does not change; otherwise,
 separate lines indicate the old and the new mode.</p>
 </div>
 </li>
 <li>
 <p>Pathnames with "unusual" characters are quoted as explained for
 the configuration variable <code>core.quotePath</code> (see
 <a href="git-config.html">git-config(1)</a>).</p>
 </li>
 <li>
 <p>All the <code>file1</code> files in the output refer to files before the
 commit, and all the <code>file2</code> files refer to files after the commit.
 It is incorrect to apply each change to each file sequentially.  For
 example, this patch will swap a and b:</p>
 <div class="literalblock">
 <div class="content">
 <pre>diff --git a/a b/b
 rename from a
 rename to b
 diff --git a/b b/a
 rename from b
 rename to a</pre>
 </div>
 </div>
 </li>
 <li>
 <p>Hunk headers mention the name of the function to which the hunk
 applies.  See "Defining a custom hunk-header" in
 <a href="gitattributes.html">gitattributes(5)</a> for details of how to tailor this to
 specific languages.</p>
 </li>
 </ol>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_combined_diff_format">Combined diff format</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Any diff-generating command can take the <code>-c</code> or <code>--cc</code> option to
 produce a <em>combined diff</em> when showing a merge. This is the default
 format when showing merges with <a href="git-diff.html">git-diff(1)</a> or
 <a href="git-show.html">git-show(1)</a>. Note also that you can give suitable
 <code>--diff-merges</code> option to any of these commands to force generation of
 diffs in a specific format.</p>
 </div>
 <div class="paragraph">
 <p>A "combined diff" format looks like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>diff --combined describe.c
 index fabadb8,cc95eb0..4866510
 --- a/describe.c
 +++ b/describe.c
 @@@ -98,20 -98,12 +98,20 @@@
         return (a_date &gt; b_date) ? -1 : (a_date == b_date) ? 0 : 1;
   }

 - static void describe(char *arg)
  -static void describe(struct commit *cmit, int last_one)
 ++static void describe(char *arg, int last_one)
   {
  +      unsigned char sha1[20];
  +      struct commit *cmit;
         struct commit_list *list;
         static int initialized = 0;
         struct commit_name *n;

  +      if (get_sha1(arg, sha1) &lt; 0)
  +              usage(describe_usage);
  +      cmit = lookup_commit_reference(sha1);
  +      if (!cmit)
  +              usage(describe_usage);
  +
         if (!initialized) {
                 initialized = 1;
                 for_each_ref(get_name);</pre>
 </div>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>It is preceded by a "git diff" header, that looks like
 this (when the <code>-c</code> option is used):</p>
 <div class="literalblock">
 <div class="content">
 <pre>diff --combined file</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>or like this (when the <code>--cc</code> option is used):</p>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>diff --cc file</pre>
 </div>
 </div>
 </li>
 <li>
 <p>It is followed by one or more extended header lines
 (this example shows a merge with two parents):</p>
 <div class="verseblock">
 <pre class="content"><code>index</code> <em>&lt;hash&gt;</em><code>,</code><em>&lt;hash&gt;</em><code>..</code><em>&lt;hash&gt;</em>
 <code>mode</code> <em>&lt;mode&gt;</em><code>,</code><em>&lt;mode&gt;</em><code>..</code><em>&lt;mode&gt;</em>
 <code>new</code> <code>file</code> <code>mode</code> <em>&lt;mode&gt;</em>
 <code>deleted</code> <code>file</code> <code>mode</code> <em>&lt;mode&gt;</em><code>,</code><em>&lt;mode&gt;</em></pre>
 </div>
 <div class="paragraph">
 <p>The <code>mode</code> <em>&lt;mode&gt;</em><code>,</code><em>&lt;mode&gt;</em><code>..</code><em>&lt;mode&gt;</em> line appears only if at least one of
 the &lt;mode&gt; is different from the rest. Extended headers with
 information about detected content movement (renames and
 copying detection) are designed to work with the diff of two
 <em>&lt;tree-ish&gt;</em> and are not used by combined diff format.</p>
 </div>
 </li>
 <li>
 <p>It is followed by a two-line from-file/to-file header:</p>
 <div class="literalblock">
 <div class="content">
 <pre>--- a/file
 +++ b/file</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>Similar to the two-line header for the traditional <em>unified</em> diff
 format, <code>/dev/null</code> is used to signal created or deleted
 files.</p>
 </div>
 <div class="paragraph">
 <p>However, if the --combined-all-paths option is provided, instead of a
 two-line from-file/to-file, you get an N+1 line from-file/to-file header,
 where N is the number of parents in the merge commit:</p>
 </div>
 <div class="literalblock">
 <div class="content">
 <pre>--- a/file
 --- a/file
 --- a/file
 +++ b/file</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>This extended format can be useful if rename or copy detection is
 active, to allow you to see the original name of the file in different
 parents.</p>
 </div>
 </li>
 <li>
 <p>Chunk header format is modified to prevent people from
 accidentally feeding it to <code>patch</code> <code>-p1</code>. Combined diff format
 was created for review of merge commit changes, and was not
 meant to be applied. The change is similar to the change in the
 extended <em>index</em> header:</p>
 <div class="literalblock">
 <div class="content">
 <pre>@@@ &lt;from-file-range&gt; &lt;from-file-range&gt; &lt;to-file-range&gt; @@@</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>There are (number of parents + 1) <code>@</code> characters in the chunk
 header for combined diff format.</p>
 </div>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>Unlike the traditional <em>unified</em> diff format, which shows two
 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
 added to B), or " " (space&#8201;&#8212;&#8201;unchanged) prefix, this format
 compares two or more files file1, file2,&#8230;&#8203; with one file X, and
 shows how X differs from each of fileN.  One column for each of
 fileN is prepended to the output line to note how X&#8217;s line is
 different from it.</p>
 </div>
 <div class="paragraph">
 <p>A <code>-</code> character in the column N means that the line appears in
 fileN but it does not appear in the result.  A <code>+</code> character
 in the column N means that the line appears in the result,
 and fileN does not have that line (in other words, the line was
 added, from the point of view of that parent).</p>
 </div>
 <div class="paragraph">
 <p>In the above example output, the function signature was changed
 from both files (hence two <code>-</code> removals from both file1 and
 file2, plus <code>++</code> to mean one line that was added does not appear
 in either file1 or file2).  Also, eight other lines are the same
 from file1 but do not appear in file2 (hence prefixed with <code>+</code>).</p>
 </div>
 <div class="paragraph">
 <p>When shown by <code>git</code> <code>diff-tree</code> <code>-c</code>, it compares the parents of a
 merge commit with the merge result (i.e. file1..fileN are the
 parents).  When shown by <code>git</code> <code>diff-files</code> <code>-c</code>, it compares the
 two unresolved merge parents with the working tree file
 (i.e. file1 is stage 2 aka "our version", file2 is stage 3 aka
 "their version").</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_other_diff_formats">other diff formats</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>The <code>--summary</code> option describes newly added, deleted, renamed and
 copied files.  The <code>--stat</code> option adds <code>diffstat</code>(1) graph to the
 output.  These options can be combined with other options, such as
 <code>-p</code>, and are meant for human consumption.</p>
 </div>
 <div class="paragraph">
 <p>When showing a change that involves a rename or a copy, <code>--stat</code> output
 formats the pathnames compactly by combining common prefix and suffix of
 the pathnames.  For example, a change that moves <code>arch/i386/Makefile</code> to
 <code>arch/x86/Makefile</code> while modifying 4 lines will be shown like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>arch/{i386 =&gt; x86}/Makefile    |   4 +--</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The <code>--numstat</code> option gives the diffstat(1) information but is designed
 for easier machine consumption.  An entry in <code>--numstat</code> output looks
 like this:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>1       2       README
 3       1       arch/{i386 =&gt; x86}/Makefile</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>That is, from left to right:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>the number of added lines;</p>
 </li>
 <li>
 <p>a tab;</p>
 </li>
 <li>
 <p>the number of deleted lines;</p>
 </li>
 <li>
 <p>a tab;</p>
 </li>
 <li>
 <p>pathname (possibly with rename/copy information);</p>
 </li>
 <li>
 <p>a newline.</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>When <code>-z</code> output option is in effect, the output is formatted this way:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre>1       2       README NUL
 3       1       NUL arch/i386/Makefile NUL arch/x86/Makefile NUL</pre>
 </div>
 </div>
 <div class="paragraph">
 <p>That is:</p>
 </div>
 <div class="olist arabic">
 <ol class="arabic">
 <li>
 <p>the number of added lines;</p>
 </li>
 <li>
 <p>a tab;</p>
 </li>
 <li>
 <p>the number of deleted lines;</p>
 </li>
 <li>
 <p>a tab;</p>
 </li>
 <li>
 <p>a NUL (only exists if renamed/copied);</p>
 </li>
 <li>
 <p>pathname in preimage;</p>
 </li>
 <li>
 <p>a NUL (only exists if renamed/copied);</p>
 </li>
 <li>
 <p>pathname in postimage (only exists if renamed/copied);</p>
 </li>
 <li>
 <p>a NUL.</p>
 </li>
 </ol>
 </div>
 <div class="paragraph">
 <p>The extra <code>NUL</code> before the preimage path in renamed case is to allow
 scripts that read the output to tell if the current record being read is
 a single-path record or a rename/copy record without reading ahead.
 After reading added and deleted lines, reading up to <code>NUL</code> would yield
 the pathname, but if that is <code>NUL</code>, the record will show two paths.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_git">GIT</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>Part of the <a href="git.html">git(1)</a> suite</p>
 </div>
 </div>
 </div>
 </div>
 <div id="footer">
 <div id="footer-text">
 Last updated 2025-06-20 18:10:42 -0700
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