updated sub with rg post

learnbyexample · learnbyexample · commit a35df03d5746 · 2020-09-17T17:26:30.000+05:30
diff --git a/atom.xml b/atom.xml
@@ -67,6 +67,10 @@ $ cat ip.txt
 dark red, light red
 light orange
 red sky
+&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
+&lt;p&gt;If you have &lt;a href=&quot;https:&#x2F;&#x2F;joeyh.name&#x2F;code&#x2F;moreutils&#x2F;&quot;&gt;moreutils installed&lt;&#x2F;a&gt;, then you could use &lt;code&gt;sponge&lt;&#x2F;code&gt; as well.&lt;&#x2F;p&gt;
+&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
+&lt;code&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;blue&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;red&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; ip.txt &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; sponge ip.txt
 &lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;&lt;br&gt;
 &lt;h2 id=&quot;rust-regex-and-pcre2&quot;&gt;Rust regex and PCRE2&lt;a class=&quot;zola-anchor&quot; href=&quot;#rust-regex-and-pcre2&quot; aria-label=&quot;Anchor link for: rust-regex-and-pcre2&quot;&gt;🔗&lt;&#x2F;a&gt;&lt;&#x2F;h2&gt;
 &lt;p&gt;By default, &lt;code&gt;rg&lt;&#x2F;code&gt; uses Rust regular expressions, which is much more featured compared to &lt;code&gt;GNU sed&lt;&#x2F;code&gt;. The main feature not supported is backreference within regexp definition (for performance reasons). See &lt;a href=&quot;https:&#x2F;&#x2F;docs.rs&#x2F;regex&#x2F;1.3.9&#x2F;regex&#x2F;index.html&quot;&gt;Rust regex documentation&lt;&#x2F;a&gt; for regular expression syntax and features. &lt;code&gt;rg&lt;&#x2F;code&gt; supports Unicode by default.&lt;&#x2F;p&gt;
@@ -107,6 +111,15 @@ $ &lt;&#x2F;span&gt;&lt;span style=&quot;color:#7f8989;&quot;&gt;# all lowercase
 $ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;quot;$s&amp;quot; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;P &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;\G([a-z]+)(-)?&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;($1)$2&amp;#39;
 &lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;(apple)&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;(fig)&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;(mango) guava grape
 &lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;&lt;br&gt;
+&lt;h2 id=&quot;extract-and-modify&quot;&gt;Extract and modify&lt;a class=&quot;zola-anchor&quot; href=&quot;#extract-and-modify&quot; aria-label=&quot;Anchor link for: extract-and-modify&quot;&gt;🔗&lt;&#x2F;a&gt;&lt;&#x2F;h2&gt;
+&lt;p&gt;The &lt;code&gt;-r&lt;&#x2F;code&gt; option can be used when &lt;code&gt;-o&lt;&#x2F;code&gt; option is active too. The example shown below is not easy to do with &lt;code&gt;sed&lt;&#x2F;code&gt;.&lt;&#x2F;p&gt;
+&lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
+&lt;code&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;$ s=&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;0501 035 154 12 26 98234&amp;#39;
+
+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#7f8989;&quot;&gt;# numbers &amp;gt;= 100 and ignore leading zeros
+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;$ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;quot;$s&amp;quot; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;woP &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;0*+(\d{3,})&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;&amp;quot;$1&amp;quot;&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; paste &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;sd,
+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;quot;501&amp;quot;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;,&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;quot;154&amp;quot;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;,&lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;quot;98234&amp;quot;
+&lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;&lt;br&gt;
 &lt;h2 id=&quot;fixed-string-matching&quot;&gt;Fixed string matching&lt;a class=&quot;zola-anchor&quot; href=&quot;#fixed-string-matching&quot; aria-label=&quot;Anchor link for: fixed-string-matching&quot;&gt;🔗&lt;&#x2F;a&gt;&lt;&#x2F;h2&gt;
 &lt;p&gt;Like &lt;code&gt;grep&lt;&#x2F;code&gt;, the &lt;code&gt;-F&lt;&#x2F;code&gt; option will allow fixed strings to be matched, a handy option that I feel every search and replace tool should provide.&lt;&#x2F;p&gt;
 &lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
@@ -117,10 +130,10 @@ foo
 &lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;
 &lt;p&gt;&lt;code&gt;-F&lt;&#x2F;code&gt; doesn&#x27;t extend to replacement section though, so you need &lt;code&gt;$$&lt;&#x2F;code&gt; instead of &lt;code&gt;$&lt;&#x2F;code&gt; character to represent it literally.&lt;&#x2F;p&gt;
 &lt;pre style=&quot;background-color:#f5f5f5;&quot;&gt;
-&lt;code&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;$ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;a.*{2}-b&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;F &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;.*{2}&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;+$x&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;
-a&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;+-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;b
-$ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;a.*{2}-b&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;F &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;.*{2}&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;+$$x&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;
-a&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;$x&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;b
+&lt;code&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;$ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;a.*{2}-b&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;F &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;.*{2}&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;+$x\tc&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;
+a&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;\tc&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;b
+$ echo &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;a.*{2}-b&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;|&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt; rg &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;--&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;passthru &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;F &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;.*{2}&amp;#39; &lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;r &lt;&#x2F;span&gt;&lt;span style=&quot;color:#d07711;&quot;&gt;&amp;#39;+$$x\tc&amp;#39;&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;
+a&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;+&lt;&#x2F;span&gt;&lt;span style=&quot;color:#5597d6;&quot;&gt;$x&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;\tc&lt;&#x2F;span&gt;&lt;span style=&quot;color:#72ab00;&quot;&gt;-&lt;&#x2F;span&gt;&lt;span style=&quot;color:#1f1f1f;&quot;&gt;b
 &lt;&#x2F;span&gt;&lt;&#x2F;code&gt;&lt;&#x2F;pre&gt;&lt;br&gt;
 &lt;h2 id=&quot;multiline-matching&quot;&gt;Multiline matching&lt;a class=&quot;zola-anchor&quot; href=&quot;#multiline-matching&quot; aria-label=&quot;Anchor link for: multiline-matching&quot;&gt;🔗&lt;&#x2F;a&gt;&lt;&#x2F;h2&gt;
 &lt;p&gt;Another handy option is &lt;code&gt;-U&lt;&#x2F;code&gt; which enables multiline matching.&lt;&#x2F;p&gt;
diff --git a/substitution-with-ripgrep/index.html b/substitution-with-ripgrep/index.html
@@ -135,6 +135,11 @@ <h2 class="post-toc-title">Contents</h2>
                     
                 </li>
                 
+                <li>
+                    <a href="https://learnbyexample.github.io/substitution-with-ripgrep/#extract-and-modify" class="toc-link">Extract and modify</a>
+                    
+                </li>
+                
                 <li>
                     <a href="https://learnbyexample.github.io/substitution-with-ripgrep/#fixed-string-matching" class="toc-link">Fixed string matching</a>
                     
@@ -233,6 +238,10 @@ <h2 id="in-place-workaround">In-place workaround<a class="zola-anchor" href="#in
 dark red, light red
 light orange
 red sky
+</span></code></pre>
+<p>If you have <a href="https://joeyh.name/code/moreutils/">moreutils installed</a>, then you could use <code>sponge</code> as well.</p>
+<pre style="background-color:#f5f5f5;">
+<code><span style="color:#1f1f1f;">rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#d07711;">&#39;blue&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;red&#39;</span><span style="color:#1f1f1f;"> ip.txt </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> sponge ip.txt
 </span></code></pre><br>
 <h2 id="rust-regex-and-pcre2">Rust regex and PCRE2<a class="zola-anchor" href="#rust-regex-and-pcre2" aria-label="Anchor link for: rust-regex-and-pcre2">🔗</a></h2>
 <p>By default, <code>rg</code> uses Rust regular expressions, which is much more featured compared to <code>GNU sed</code>. The main feature not supported is backreference within regexp definition (for performance reasons). See <a href="https://docs.rs/regex/1.3.9/regex/index.html">Rust regex documentation</a> for regular expression syntax and features. <code>rg</code> supports Unicode by default.</p>
@@ -273,6 +282,15 @@ <h2 id="rust-regex-and-pcre2">Rust regex and PCRE2<a class="zola-anchor" href="#
 $ echo </span><span style="color:#d07711;">&quot;$s&quot; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#72ab00;">-</span><span style="color:#5597d6;">P </span><span style="color:#d07711;">&#39;\G([a-z]+)(-)?&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;($1)$2&#39;
 </span><span style="color:#1f1f1f;">(apple)</span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">(fig)</span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">(mango) guava grape
 </span></code></pre><br>
+<h2 id="extract-and-modify">Extract and modify<a class="zola-anchor" href="#extract-and-modify" aria-label="Anchor link for: extract-and-modify">🔗</a></h2>
+<p>The <code>-r</code> option can be used when <code>-o</code> option is active too. The example shown below is not easy to do with <code>sed</code>.</p>
+<pre style="background-color:#f5f5f5;">
+<code><span style="color:#1f1f1f;">$ s=</span><span style="color:#d07711;">&#39;0501 035 154 12 26 98234&#39;
+
+</span><span style="color:#7f8989;"># numbers &gt;= 100 and ignore leading zeros
+</span><span style="color:#1f1f1f;">$ echo </span><span style="color:#d07711;">&quot;$s&quot; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">woP </span><span style="color:#d07711;">&#39;0*+(\d{3,})&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;&quot;$1&quot;&#39; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> paste </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">sd,
+</span><span style="color:#d07711;">&quot;501&quot;</span><span style="color:#1f1f1f;">,</span><span style="color:#d07711;">&quot;154&quot;</span><span style="color:#1f1f1f;">,</span><span style="color:#d07711;">&quot;98234&quot;
+</span></code></pre><br>
 <h2 id="fixed-string-matching">Fixed string matching<a class="zola-anchor" href="#fixed-string-matching" aria-label="Anchor link for: fixed-string-matching">🔗</a></h2>
 <p>Like <code>grep</code>, the <code>-F</code> option will allow fixed strings to be matched, a handy option that I feel every search and replace tool should provide.</p>
 <pre style="background-color:#f5f5f5;">
@@ -283,10 +301,10 @@ <h2 id="fixed-string-matching">Fixed string matching<a class="zola-anchor" href=
 </span></code></pre>
 <p><code>-F</code> doesn't extend to replacement section though, so you need <code>$$</code> instead of <code>$</code> character to represent it literally.</p>
 <pre style="background-color:#f5f5f5;">
-<code><span style="color:#1f1f1f;">$ echo </span><span style="color:#d07711;">&#39;a.*{2}-b&#39; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#72ab00;">-</span><span style="color:#5597d6;">F </span><span style="color:#d07711;">&#39;.*{2}&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;+$x&#39;</span><span style="color:#1f1f1f;">
-a</span><span style="color:#72ab00;">+-</span><span style="color:#1f1f1f;">b
-$ echo </span><span style="color:#d07711;">&#39;a.*{2}-b&#39; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#72ab00;">-</span><span style="color:#5597d6;">F </span><span style="color:#d07711;">&#39;.*{2}&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;+$$x&#39;</span><span style="color:#1f1f1f;">
-a</span><span style="color:#72ab00;">+</span><span style="color:#5597d6;">$x</span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">b
+<code><span style="color:#1f1f1f;">$ echo </span><span style="color:#d07711;">&#39;a.*{2}-b&#39; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#72ab00;">-</span><span style="color:#5597d6;">F </span><span style="color:#d07711;">&#39;.*{2}&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;+$x\tc&#39;</span><span style="color:#1f1f1f;">
+a</span><span style="color:#72ab00;">+</span><span style="color:#1f1f1f;">\tc</span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">b
+$ echo </span><span style="color:#d07711;">&#39;a.*{2}-b&#39; </span><span style="color:#72ab00;">|</span><span style="color:#1f1f1f;"> rg </span><span style="color:#72ab00;">--</span><span style="color:#1f1f1f;">passthru </span><span style="color:#72ab00;">-</span><span style="color:#5597d6;">F </span><span style="color:#d07711;">&#39;.*{2}&#39; </span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">r </span><span style="color:#d07711;">&#39;+$$x\tc&#39;</span><span style="color:#1f1f1f;">
+a</span><span style="color:#72ab00;">+</span><span style="color:#5597d6;">$x</span><span style="color:#1f1f1f;">\tc</span><span style="color:#72ab00;">-</span><span style="color:#1f1f1f;">b
 </span></code></pre><br>
 <h2 id="multiline-matching">Multiline matching<a class="zola-anchor" href="#multiline-matching" aria-label="Anchor link for: multiline-matching">🔗</a></h2>
 <p>Another handy option is <code>-U</code> which enables multiline matching.</p>
