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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/elisp/regular-expressions.html | |
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| -rw-r--r-- | devdocs/elisp/regular-expressions.html | 31 |
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diff --git a/devdocs/elisp/regular-expressions.html b/devdocs/elisp/regular-expressions.html new file mode 100644 index 00000000..02a98e0b --- /dev/null +++ b/devdocs/elisp/regular-expressions.html @@ -0,0 +1,31 @@ + <h3 class="section">Regular Expressions</h3> <p>A <em>regular expression</em>, or <em>regexp</em> for short, is a pattern that denotes a (possibly infinite) set of strings. Searching for matches for a regexp is a very powerful operation. This section explains how to write regexps; the following section says how to search for them. </p> <p>For interactive development of regular expressions, you can use the <kbd>M-x re-builder</kbd> command. It provides a convenient interface for creating regular expressions, by giving immediate visual feedback in a separate buffer. As you edit the regexp, all its matches in the target buffer are highlighted. Each parenthesized sub-expression of the regexp is shown in a distinct face, which makes it easier to verify even very complex regexps. </p> <p>Note that by default Emacs search ignores case (see <a href="searching-and-case">Searching and Case</a>). To enable case-sensitive regexp search and match, bind <code>case-fold-search</code> to <code>nil</code> around the code you want to be case-sensitive. </p> <table class="menu" border="0" cellspacing="0"> <tr> +<td align="left" valign="top">• <a href="syntax-of-regexps" accesskey="1">Syntax of Regexps</a> +</td> +<td> </td> +<td align="left" valign="top">Rules for writing regular expressions. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="regexp-example" accesskey="2">Regexp Example</a> +</td> +<td> </td> +<td align="left" valign="top">Illustrates regular expression syntax. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="rx-notation" accesskey="3">Rx Notation</a> +</td> +<td> </td> +<td align="left" valign="top">An alternative, structured regexp notation. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="regexp-functions" accesskey="4">Regexp Functions</a> +</td> +<td> </td> +<td align="left" valign="top">Functions for operating on regular expressions. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="regexp-problems" accesskey="5">Regexp Problems</a> +</td> +<td> </td> +<td align="left" valign="top">Some problems and how they may be avoided. </td> +</tr> </table><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br> + <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Regular-Expressions.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Regular-Expressions.html</a> + </p> +</div> |