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<title>Buffer-Local Properties</title><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="jEdit 5.6 User's Guide"><link rel="up" href="customizing.html" title="Chapter 7. Customizing jEdit"><link rel="prev" href="buffer-opts.html" title="The Buffer Options Dialog Box"><link rel="next" href="global-opts.html" title="The Global Options Dialog Box"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Buffer-Local Properties</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="buffer-opts.html">Prev</a> </td><th width="60%" align="center">Chapter 7. Customizing jEdit</th><td width="20%" align="right"> <a accesskey="n" href="global-opts.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="buffer-local"></a>Buffer-Local Properties</h2></div></div></div><p>Buffer-local properties provide an alternate way to change editor
settings on a per-buffer basis. While changes made in the
<span class="guimenuitem"><strong>Buffer Options</strong></span> dialog box are lost after the
buffer is closed, buffer-local properties take effect each time the file
is opened, because they are embedded in the file itself.</p><p>When jEdit loads a file, it checks the first and last 10 lines for
colon-enclosed name/value pairs. For example, placing the following in a
buffer changes the indent width to 4 characters, enables soft tabs, and
activates the Perl edit mode:</p><pre class="screen">:indentSize=4:noTabs=true:mode=perl:</pre><p>Adding buffer-local properties to a buffer takes effect after the
the buffer is saved and loaded again.</p><p>The following table describes each buffer-local property in
detail.</p><div class="informaltable"><table class="informaltable" border="1"><colgroup><col width="25%"><col width="75%"></colgroup><thead><tr><th>Property name</th><th>Description</th></tr></thead><tbody><tr><td><code class="varname">collapseFolds</code></td><td>Folds with a level of this or higher will be
collapsed when the buffer is opened. If set to zero, all
folds will be expanded initially. See <a class="xref" href="folding.html" title="Folding">the section called “Folding”</a>.</td></tr><tr><td><code class="varname">deepIndent</code></td><td>When set to <span class="quote">“<span class="quote">true</span>”</span>, multiple-line
expressions delimited by parentheses are aligned like
so: <pre class="programlisting">retVal.x = (int)(horizontalOffset
+ Chunk.offsetToX(info.chunks,
offset));
</pre> With this setting disabled, the
text would look like so: <pre class="programlisting">retVal.x = (int)(horizontalOffset
+ Chunk.offsetToX(info.chunks,
offset));
</pre></td></tr><tr><td><code class="varname">folding</code></td><td>The fold mode; one of <span class="quote">“<span class="quote">none</span>”</span>,
<span class="quote">“<span class="quote">indent</span>”</span>, <span class="quote">“<span class="quote">explicit</span>”</span>, or the
name of a plugin folding mode. See <a class="xref" href="folding.html" title="Folding">the section called “Folding”</a>.</td></tr><tr><td><code class="varname">indentSize</code></td><td>The width, in characters, of one indent. Must be
an integer greater than 0. See <a class="xref" href="indent.html" title="Tabbing and Indentation">the section called “Tabbing and Indentation”</a>.</td></tr><tr><td><code class="varname">maxLineLen</code></td><td>The maximum line length and wrap column position.
Inserting text beyond this column will automatically
insert a line break at the appropriate position. See
<a class="xref" href="entering-text.html" title="Inserting and Deleting Text">the section called “Inserting and Deleting Text”</a>.</td></tr><tr><td><code class="varname">mode</code></td><td>The default edit mode for the buffer. See <a class="xref" href="modes.html" title="Edit Modes">the section called “Edit Modes”</a>.</td></tr><tr><td><code class="varname">noTabs</code></td><td>If set to <span class="quote">“<span class="quote">true</span>”</span>, soft tabs
(multiple space characters) will be used instead of
<span class="quote">“<span class="quote">real</span>”</span> tabs. See <a class="xref" href="indent.html" title="Tabbing and Indentation">the section called “Tabbing and Indentation”</a>.</td></tr><tr><td><code class="varname">noWordSep</code></td><td>A list of non-alphanumeric characters that are
<span class="emphasis"><em>not</em></span> to be treated as word
separators. Global default is <span class="quote">“<span class="quote">_</span>”</span>.</td></tr><tr><td><code class="varname">tabSize</code></td><td>The tab width. Must be an integer greater than 0.
See <a class="xref" href="indent.html" title="Tabbing and Indentation">the section called “Tabbing and Indentation”</a>.</td></tr><tr><td><code class="varname">wordBreakChars</code></td><td>Characters, in addition to spaces and tabs, at
which lines may be split when the word wrap mode is set
to <span class="quote">“<span class="quote">hard</span>”</span>. See <a class="xref" href="word-wrap.html" title="Wrapping Long Lines">the section called “Wrapping Long Lines”</a>.</td></tr><tr><td><code class="varname">wrap</code></td><td>The word wrap mode; one of <span class="quote">“<span class="quote">none</span>”</span>,
<span class="quote">“<span class="quote">soft</span>”</span>, or <span class="quote">“<span class="quote">hard</span>”</span>. See <a class="xref" href="word-wrap.html" title="Wrapping Long Lines">the section called “Wrapping Long Lines”</a>.</td></tr><tr><td><code class="varname">autoIndent</code></td><td>The automatic indentation scheme; one of
<span class="quote">“<span class="quote">none</span>”</span>, <span class="quote">“<span class="quote">full</span>”</span>, or
<span class="quote">“<span class="quote">simple</span>”</span>. See <a class="xref" href="indent.html#autoindent" title="Automatic Indent">the section called “Automatic Indent”</a>.
</td></tr></tbody></table></div><p> You may see <code class="literal">:encoding=XXX:</code> in a file
as it is a buffer-local property and specifying the character encoding
for the file. But it is not really a buffer-local property, and behaves
differently.
It is detected by <code class="literal">buffer-local-property</code> detector
only if the detector is selected in encoding options. Thus, it works
only at loading, and it must appear near the top of the file.
See <a class="xref" href="encodings.html" title="Character Encodings">the section called “Character Encodings”</a>. </p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="buffer-opts.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="customizing.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="global-opts.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">The Buffer Options Dialog Box </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> The Global Options Dialog Box</td></tr></table></div></body></html>
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