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<div class="section" id="reviewing-changes">
<h1>Reviewing changes<a class="headerlink" href="#reviewing-changes" title="Permalink to this headline">¶</a></h1>
<div class="section" id="looking-before-you-leap">
<h2>Looking before you leap<a class="headerlink" href="#looking-before-you-leap" title="Permalink to this headline">¶</a></h2>
<p>Once you have completed some work, it’s a good idea to review your changes
prior to permanently recording it. This way, you can make sure you’ll be
committing what you intend to.</p>
<p>Two bzr commands are particularly useful here: <strong>status</strong> and <strong>diff</strong>.</p>
</div>
<div class="section" id="bzr-status">
<h2>bzr status<a class="headerlink" href="#bzr-status" title="Permalink to this headline">¶</a></h2>
<p>The <strong>status</strong> command tells you what changes have been made to the
working directory since the last revision:</p>
<div class="highlight-python"><div class="highlight"><pre>% bzr status
modified:
foo
</pre></div>
</div>
<p><tt class="docutils literal"><span class="pre">bzr</span> <span class="pre">status</span></tt> hides “boring” files that are either unchanged or ignored.
The status command can optionally be given the name of some files or
directories to check.</p>
</div>
<div class="section" id="bzr-diff">
<h2>bzr diff<a class="headerlink" href="#bzr-diff" title="Permalink to this headline">¶</a></h2>
<p>The <strong>diff</strong> command shows the full text of changes to all files as a
standard unified diff. This can be piped through many programs such as
‘’patch’‘, ‘’diffstat’‘, ‘’filterdiff’’ and ‘’colordiff’‘:</p>
<div class="highlight-python"><div class="highlight"><pre>% bzr diff
=== added file 'hello.txt'
--- hello.txt 1970-01-01 00:00:00 +0000
+++ hello.txt 2005-10-18 14:23:29 +0000
@@ -0,0 +1,1 @@
+hello world
</pre></div>
</div>
<p>With the <tt class="docutils literal"><span class="pre">-r</span></tt> option, the tree is compared to an earlier revision, or
the differences between two versions are shown:</p>
<div class="highlight-python"><div class="highlight"><pre>% bzr diff -r 1000.. # everything since r1000
% bzr diff -r 1000..1100 # changes from 1000 to 1100
</pre></div>
</div>
<p>To see the changes introduced by a single revision, you can use the <tt class="docutils literal"><span class="pre">-c</span></tt>
option to diff.</p>
<div class="highlight-python"><div class="highlight"><pre>% bzr diff -c 1000 # changes from r1000
# identical to -r999..1000
</pre></div>
</div>
<p>The <tt class="docutils literal"><span class="pre">--diff-options</span></tt> option causes bzr to run the external diff program,
passing options. For example:</p>
<div class="highlight-python"><div class="highlight"><pre>% bzr diff --diff-options --side-by-side foo
</pre></div>
</div>
<p>Some projects prefer patches to show a prefix at the start of the path
for old and new files. The <tt class="docutils literal"><span class="pre">--prefix</span></tt> option can be used to provide
such a prefix.
As a shortcut, <tt class="docutils literal"><span class="pre">bzr</span> <span class="pre">diff</span> <span class="pre">-p1</span></tt> produces a form that works with the
command <tt class="docutils literal"><span class="pre">patch</span> <span class="pre">-p1</span></tt>.</p>
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<h3><a href="../index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Reviewing changes</a><ul>
<li><a class="reference internal" href="#looking-before-you-leap">Looking before you leap</a></li>
<li><a class="reference internal" href="#bzr-status">bzr status</a></li>
<li><a class="reference internal" href="#bzr-diff">bzr diff</a></li>
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