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| <title>Supported Regular Expressions</title> |
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| <h1 class="Head">Supported Regular Expressions</h1> |
| <p>When searching for text you can use the regular expressions as defined by the <a href= |
| "https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html">Pattern class</a>.<br /> |
| Additionally, \R can be used to match any form of line delimiter (Unix, Windows, Classic Mac OS). Note that \R does |
| not work in character groups ([]).</p> |
| <p>The replace string allows the following constructs:</p> |
| <table border="1" cellpadding="5" summary="supported constructs in the replace field"> |
| <tbody> |
| <tr> |
| <td>$i</td> |
| <td>inserts <a href= |
| "https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html#cg">capturing |
| group</a> i.</td> |
| </tr> |
| <tr> |
| <td>\i</td> |
| <td>inserts <a href= |
| "https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/regex/Pattern.html#cg">capturing |
| group</a> i (same as $i).</td> |
| </tr> |
| <tr> |
| <td>\<i>x</i></td> |
| <td>quotes character <i>x</i> (unless \<i>x</i> has a special meaning)</td> |
| </tr> |
| <tr> |
| <td>\R</td> |
| <td>inserts the default line delimiter of the document</td> |
| </tr> |
| <tr> |
| <td>\x<i>hh</i></td> |
| <td>inserts the hexadecimal character <i>hh</i></td> |
| </tr> |
| <tr> |
| <td>\u<i>hhhh</i></td> |
| <td>inserts the Unicode character <i>hhhh</i></td> |
| </tr> |
| <tr> |
| <td>\n</td> |
| <td>inserts a newline character (usually, you should use \R instead)</td> |
| </tr> |
| <tr> |
| <td>\r</td> |
| <td>inserts a carriage-return character (usually, you should use \R instead)</td> |
| </tr> |
| <tr> |
| <td>\t</td> |
| <td>inserts a tab character</td> |
| </tr> |
| <tr> |
| <td>\f</td> |
| <td>inserts a form-feed character</td> |
| </tr> |
| <tr> |
| <td>\a</td> |
| <td>inserts an alert (beep) character</td> |
| </tr> |
| <tr> |
| <td>\e</td> |
| <td>inserts an escape character</td> |
| </tr> |
| <tr> |
| <td>\c<i>X</i></td> |
| <td>inserts the control character for <i>X</i></td> |
| </tr> |
| <tr> |
| <td>\C</td> |
| <td>retains the casing of the match (all lower case, all upper case, capitalized) for the rest of the replace |
| string</td> |
| </tr> |
| </tbody> |
| </table> |
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