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<div class="section" id="two-and-three-dots-in-difference-specs">

<span id="dot2-dot3"></span><h1>Two and three dots in difference specs<a class="headerlink" href="#two-and-three-dots-in-difference-specs" title="Permalink to this headline">¶</a></h1>

<p>Thanks to Yarik Halchenko for this explanation.</p>

<p>Imagine a series of commits A, B, C, D... Imagine that there are two

branches, <em>topic</em> and <em>master</em>. You branched <em>topic</em> off <em>master</em> when

<em>master</em> was at commit 'E'. The graph of the commits looks like this:</p>

<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">A</span><span class="o">---</span><span class="n">B</span><span class="o">---</span><span class="n">C</span> <span class="n">topic</span>

<span class="o">/</span>

<span class="n">D</span><span class="o">---</span><span class="n">E</span><span class="o">---</span><span class="n">F</span><span class="o">---</span><span class="n">G</span> <span class="n">master</span>

<p>Then:</p>

<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">git</span> <span class="n">diff</span> <span class="n">master</span><span class="o">..</span><span class="n">topic</span>

<p>will output the difference from G to C (i.e. with effects of F and G),

while:</p>

<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">git</span> <span class="n">diff</span> <span class="n">master</span><span class="o">...</span><span class="n">topic</span>

<p>would output just differences in the topic branch (i.e. only A, B, and

C).</p>

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