devdocs/elisp/strings-and-characters.html


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 <h2 class="chapter">Strings and Characters</h2>     <p>A string in Emacs Lisp is an array that contains an ordered sequence of characters. Strings are used as names of symbols, buffers, and files; to send messages to users; to hold text being copied between buffers; and for many other purposes. Because strings are so important, Emacs Lisp has many functions expressly for manipulating them. Emacs Lisp programs use strings more often than individual characters. </p> <p>See <a href="strings-of-events">Strings of Events</a>, for special considerations for strings of keyboard character events. </p> <table class="menu" border="0" cellspacing="0"> <tr>
<td align="left" valign="top">• <a href="string-basics" accesskey="1">Basics</a>
</td>
<td> </td>
<td align="left" valign="top">Basic properties of strings and characters. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="predicates-for-strings" accesskey="2">Predicates for Strings</a>
</td>
<td> </td>
<td align="left" valign="top">Testing whether an object is a string or char. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="creating-strings" accesskey="3">Creating Strings</a>
</td>
<td> </td>
<td align="left" valign="top">Functions to allocate new strings. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="modifying-strings" accesskey="4">Modifying Strings</a>
</td>
<td> </td>
<td align="left" valign="top">Altering the contents of an existing string. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="text-comparison" accesskey="5">Text Comparison</a>
</td>
<td> </td>
<td align="left" valign="top">Comparing characters or strings. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="string-conversion" accesskey="6">String Conversion</a>
</td>
<td> </td>
<td align="left" valign="top">Converting to and from characters and strings. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="formatting-strings" accesskey="7">Formatting Strings</a>
</td>
<td> </td>
<td align="left" valign="top">
<code>format</code>: Emacs’s analogue of <code>printf</code>. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="custom-format-strings" accesskey="8">Custom Format Strings</a>
</td>
<td> </td>
<td align="left" valign="top">Formatting custom <code>format</code> specifications. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="case-conversion" accesskey="9">Case Conversion</a>
</td>
<td> </td>
<td align="left" valign="top">Case conversion functions. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="case-tables">Case Tables</a>
</td>
<td> </td>
<td align="left" valign="top">Customizing case conversion. </td>
</tr> </table><div class="_attribution">
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    <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Strings-and-Characters.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Strings-and-Characters.html</a>
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