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<refentry id="class-gtksourcebuffer">
  <refnamediv>
    <refname>gtksourceview.SourceBuffer</refname>
    <refpurpose>Text buffer object for <link linkend="class-gtksourceview">gtksourceview.SourceView</link></refpurpose>
  </refnamediv>

<!-- ********************************* -->
<!-- BEGIN OF GTKSOURCEBUFFER SYNOPSIS -->
<!-- ********************************* -->

<refsect1>
    <title>Synopsis</title>

    <classsynopsis language="python">
    <ooclass><classname>gtksourceview.SourceBuffer</classname></ooclass>
    <ooclass><classname><link linkend="class-gtktextbuffer">gtk.TextBuffer</link></classname></ooclass>
    
    <constructorsynopsis language="python">
	<methodname><link linkend="constructor-gtksourcebuffer">gtksourceview.SourceBuffer</link></methodname>
	<methodparam><parameter role="keyword">buffer</parameter><initializer>None</initializer></methodparam>
    </constructorsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--set-check-brackets">set_check_brackets</link></methodname>
	<methodparam><parameter role="keyword">check_brackets</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--get-check-brackets">get_check_brackets</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--set-bracket-match-style">set_bracket_match_style</link></methodname>
	<methodparam><parameter role="keyword">style</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--set-highlight">set_highlight</link></methodname>
	<methodparam><parameter role="keyword">highlight</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-highlight">get_highlight</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--set-max-undo-levels">set_max_undo_levels</link></methodname>
	<methodparam><parameter role="keyword">max_undo_levels</parameter></methodparam>
    </methodsynopsis>

    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--get-max-undo-levels">get_max_undo_levels</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
      
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--set-language">set_language</link></methodname>
	<methodparam><parameter role="keyword">language</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--get-language">get_language</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--set-escape-char">set_escape_char</link></methodname>
	<methodparam><parameter role="keyword">escape_char</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--get-escape-char">get_escape_char</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--can-undo">can_undo</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--can-redo">can_redo</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--undo">undo</link></methodname>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--redo">redo</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--begin-not-undoable-action">begin_not_undoable_action</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--end-not-undoable-action">end_not_undoable_action</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
	<methodname><link linkend="method-gtksourcebuffer--create-marker">create_marker</link></methodname>
	<methodparam><parameter role="keyword">name</parameter></methodparam>
    <methodparam><parameter role="keyword">type</parameter></methodparam>
    <methodparam><parameter role="keyword">where</parameter></methodparam>
    </methodsynopsis>
    
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--move-marker">move_marker</link></methodname>
	<methodparam><parameter role="keyword">marker</parameter></methodparam>
    <methodparam><parameter role="keyword">where</parameter></methodparam>
    </methodsynopsis>
	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--delete-marker">delete_marker</link></methodname>
	<methodparam><parameter role="keyword">marker</parameter></methodparam>
    </methodsynopsis>
	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-marker">get_marker</link></methodname>
    <methodparam><parameter role="keyword">name</parameter></methodparam>
    </methodsynopsis>
	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-markers-in-region">get_marker_in_region</link></methodname>
    <methodparam><parameter role="keyword">start</parameter></methodparam>
    <methodparam><parameter role="keyword">end</parameter></methodparam>
    </methodsynopsis>
 	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-first-marker">get_first_marker</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>     
 	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-last-marker">get_last_marker</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>     
 	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-iter-at-marker">get_iter_at_marker</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>     
 	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-next-marker">get_next_marker</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
 	
    <methodsynopsis language="python">
    <methodname><link linkend="method-gtksourcebuffer--get-prev-marker">get_prev_marker</link></methodname>
	<methodparam></methodparam>
    </methodsynopsis>
</classsynopsis>

<programlisting>
<emphasis role="bold">Functions</emphasis>

<methodsynopsis language="python">
<methodname><link linkend="function-gtksourcebuffer--new-with-language">gtksourceview.gtk_source_buffer_new_with_language</link></methodname>
<methodparam><parameter role="keyword"><link linkend="class-gtktextbuffer">gtksourceview.SourceLanguage</link></parameter></methodparam>
</methodsynopsis></programlisting>
</refsect1>

<!-- ********************************* -->
<!-- BEGIN OF GTKSOURCEBUFFER ANCESTRY -->
<!-- ********************************* -->

<refsect1>
    <title>Ancestry</title>

<synopsis>+-- <link linkend="class-gobject">gobject.GObject</link>
  +-- <link linkend="class-gtktextbuffer">gtk.TextBuffer</link>
    +-- <link linkend="class-gtksourcebuffer">gtksourceview.SourceBuffer</link>
</synopsis>
</refsect1>

<!-- *********************************** -->
<!-- BEGIN OF GTKSOURCEBUFFER PROPERTIES -->
<!-- *********************************** -->

<refsect1>
    <title>Properties</title>

    <blockquote role="properties">
      <informaltable pgwide="1" frame="none">
	<tgroup cols="3">
	  <colspec column="1" colwidth="1in"/>
	  <colspec column="2" colwidth="1in"/>
	  <colspec column="3" colwidth="4in"/>
	  <tbody>

	    <row valign="top">
	      <entry>"check-brackets"</entry>
	      <entry>Read-Write</entry>
	      <entry>If <literal>TRUE</literal> bracket match highlighting is activated.</entry>
	    </row>

	    <row valign="top">
	      <entry>"escape-char"</entry>
	      <entry>Read-Write</entry>
	      <entry>Escaping character for syntax patterns.</entry>
	    </row>

	    <row valign="top">
	      <entry>"highlight"</entry>
	      <entry>Read-Write</entry>
	      <entry>If <literal>TRUE</literal> the syntax highlighting is activated.</entry>
	    </row>

	    <row valign="top">
	      <entry>"language"</entry>
	      <entry>Read-Write</entry>
	      <entry>Language object to get highlighting patterns from.</entry>
	    </row>

	    <row valign="top">
	      <entry>"max-undo-levels"</entry>
	      <entry>Read-Write</entry>
	      <entry>Number of undo levels for the buffer.</entry>
	    </row>

    </tbody>
	</tgroup>
      </informaltable>
    </blockquote>
</refsect1>

<!-- ****************************************** -->
<!-- BEGIN OF GTKSOURCEBUFFER SIGNAL PROTOTYPES -->
<!-- ****************************************** -->

<refsect1>
    <title>Signal Prototypes</title>
    <variablelist>
      <varlistentry>
        <term>"<link linkend="signal-gtksourcebuffer--can-redo">"can-redo"</link>"</term>
        <listitem>
          <methodsynopsis language="python"><methodname>callback</methodname>
            <methodparam><parameter>sourceview</parameter></methodparam>
            <methodparam><parameter>arg1</parameter></methodparam>
            <methodparam><parameter>user_param1</parameter></methodparam>
            <methodparam><parameter>...</parameter></methodparam>
          </methodsynopsis>
        </listitem>
      </varlistentry>
      
      <varlistentry>
        <term>"<link linkend="signal-gtksourcebuffer--can-undo">"can-undo"</link>"</term>
        <listitem>
          <methodsynopsis language="python"><methodname>callback</methodname>
            <methodparam><parameter>sourceview</parameter></methodparam>
            <methodparam><parameter>arg1</parameter></methodparam>
            <methodparam><parameter>user_param1</parameter></methodparam>
            <methodparam><parameter>...</parameter></methodparam>
          </methodsynopsis>
        </listitem>
      </varlistentry>
      
      <varlistentry>
        <term>"<link linkend="signal-gtksourcebuffer--highlight-updated">"highlight-updated"</link>"</term>
        <listitem>
          <methodsynopsis language="python"><methodname>callback</methodname>
            <methodparam><parameter>sourceview</parameter></methodparam>
            <methodparam><parameter>start</parameter></methodparam>
            <methodparam><parameter>end</parameter></methodparam>
            <methodparam><parameter>user_param1</parameter></methodparam>
            <methodparam><parameter>...</parameter></methodparam>
          </methodsynopsis>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>"<link linkend="signal-gtksourcebuffer--marker-updated">"marker-updated"</link>"</term>
        <listitem>
          <methodsynopsis language="python"><methodname>callback</methodname>
            <methodparam><parameter>sourceview</parameter></methodparam>
            <methodparam><parameter>iter</parameter></methodparam>
            <methodparam><parameter>user_param1</parameter></methodparam>
            <methodparam><parameter>...</parameter></methodparam>
          </methodsynopsis>
        </listitem>
      </varlistentry>
    </variablelist>
</refsect1>

<!-- ************************************ -->
<!-- BEGIN OF GTKSOURCEBUFFER DESCRIPTION -->
<!-- ************************************ -->

<refsect1 id="description-gtksourcebuffer">
    <title>Description</title>

<para>
The <link linkend="class-gtksourcebuffer"><classname>gtksourceview.SourceBuffer</classname></link>
is the model for <link linkend="class-gtksourceview"><classname>gtksourceview.SourceView</classname></link>
widgets. It extends the <link linkend="class-gtktextbuffer"><classname>gtk.TextBuffer</classname></link>
object by adding features necessary to display and edit source code: syntax highlighting, bracket matching and markers. 
It also implements support for undo/redo operations.
</para>

<para>
To create a <link linkend="class-gtksourcebuffer"><classname>gtksourceview.SourceBuffer</classname></link> 
use <link linkend="function-gtksourcebuffer--new"><methodname>gtksourceview.gtk_source_buffer_new</methodname>()</link> 
or <link linkend="function-gtksourcebuffer--new-with-language"><methodname>gtksourceview.gtk_source_buffer_new_with_language</methodname></link>.
The second form is just a convenience function which allows you to initially set a 
<link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link>.
</para>

<para>
By default highlighting is enabled, but you can disable it with 
<link linkend="method-gtksourcebuffer--set-highlight"><methodname>set_highlight</methodname>()</link>. This can be useful if you're not using 
<link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
objects to set the highlighting patterns, and instead you're manually adding 
<link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> objects to the buffer's tag table.
</para>
</refsect1>

<!-- ************************************ -->
<!-- BEGIN OF GTKSOURCEBUFFER CONSTRUCTOR -->
<!-- ************************************ -->

<refsect1 id="constructor-gtksourcebuffer">
  <title>Constructor</title>

  <programlisting><constructorsynopsis language="python">
	  <methodname>gtksourceview.SourceBuffer</methodname>
	  <methodparam><parameter role="keyword">table</parameter><initializer>None</initializer></methodparam>
  </constructorsynopsis></programlisting>
    
  <variablelist>
    <varlistentry>
	    <term><parameter role="keyword">table</parameter>&nbsp;:</term>
	    <listitem><simpara>a <link linkend="class-gtksourcetagtable"><classname>gtksourceview.SourceTagTable</classname></link> 
      or <literal>None</literal></simpara></listitem>
    </varlistentry>

    <varlistentry>
	    <term><emphasis>Returns</emphasis>&nbsp;:</term>
	    <listitem><simpara>a new <link linkend="class-gtksourcebuffer"><classname>gtksourceview.SourceBuffer</classname></link>.
        </simpara></listitem>
    </varlistentry>
  </variablelist>

  <para>
    Creates a new <link linkend="class-gtksourcebuffer"><classname>gtksourceview.SourceBuffer</classname></link> object.
  </para>
</refsect1>

<!-- ******************************** -->
<!-- BEGIN OF GTKSOURCEBUFFER METHODS -->
<!-- ******************************** -->

<refsect1>
    <title>Methods</title>

  <refsect2 id="method-gtksourcebuffer--set-check-brackets">
      <title>gtksourceview.SourceBuffer.set_check_brackets</title>
      <programlisting><methodsynopsis language="python">
	  <methodname>set_check_brackets</methodname>
	  <methodparam><parameter role="keyword">check_brackets</parameter></methodparam>
	  </methodsynopsis></programlisting>
      
      <variablelist>
	  <varlistentry>
	  <term><parameter role="keyword">check_brackets</parameter>&nbsp;:</term>
	  <listitem><simpara>if <literal>TRUE</literal> turns on the matching brackets highlight.</simpara></listitem>
	  </varlistentry>
      </variablelist>

      <para>
      The <methodname>set_check_brackets</methodname>() method controls the bracket match highlighting function in the buffer. 
      If activated, when you position your cursor over a bracket character (a parenthesis, a square bracket, etc.) the matching 
      opening or closing bracket character will be highlighted. You can specify the style with the 
      <link linkend="method-gtksourcebuffer--set-bracket-match-style"><methodname>set_bracket_match_style</methodname></link> function.
	  </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-check-brackets">
    <title>gtksourceview.SourceBuffer.get_check_brackets</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>get_check_brackets</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara><literal>TRUE</literal> if the matching brackets highlight is active, 
	      <literal>FALSE</literal> otherwise.</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The <methodname>get_check_brackets</methodname>() method returns the
      value of the "check-brackets" property which determines if the matching brackets highlight is active.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--set-bracket-match-style">
      <title>gtksourceview.SourceBuffer.set_bracket_match_style</title>
      <programlisting><methodsynopsis language="python">
	  <methodname>set_bracket_match_style</methodname>
	  <methodparam><parameter role="keyword">style</parameter></methodparam>
	  </methodsynopsis></programlisting>
      
      <variablelist>
	  <varlistentry>
	  <term><parameter role="keyword">style</parameter>&nbsp;:</term>
	  <listitem><simpara>the <link linkend="class-gtksourcetagstyle"><classname>gtksourceview.SourceTagStyle</classname></link> 
    specifying colors and text attributes.</simpara></listitem>
	  </varlistentry>
      </variablelist>

      <para>
      The <methodname>set_bracket_match_style</methodname>() method sets the style used for highlighting matching brackets.
	  </para>
  </refsect2>
  
  <refsect2 id="method-gtksourcebuffer--set-highlight">
    <title>gtksourceview.SourceBuffer.set_highlight</title>
    <programlisting><methodsynopsis language="python">
	    <methodname>set_highlight</methodname>
	    <methodparam><parameter role="keyword">highlight</parameter></methodparam>
	    </methodsynopsis></programlisting>
      
      <variablelist>
	      <varlistentry>
	      <term><parameter role="keyword">highlight</parameter>&nbsp;:</term>
	      <listitem><simpara>if <literal>TRUE</literal> turns on the source highlighting.</simpara></listitem>
	      </varlistentry>
      </variablelist>

      <para>
        The <methodname>set_highlight</methodname>() method controls whether text is highlighted in the buffer. If 
        <parameter role="keyword">highlight</parameter> is <literal>TRUE</literal> , the text will be highlighted 
        according to the patterns installed in the buffer (either set with 
        <methodname><link linkend="method-gtksourcebuffer--set-language">set_language</link></methodname> or 
        by adding individual <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> 
        tags to the buffer's tag table). Otherwise, any current highlighted text will be restored to the default buffer style.
      </para>
      <para>
        Tags not of <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> 
        type will not be removed by this option, and normal GtkTextTag priority settings apply when highlighting is enabled.
      </para>
      <para>
        If not using a <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
        for setting the highlighting patterns in the buffer, it is recommended for performance reasons that you add all the 
        <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> 
        tags with highlighting disabled and enable it when finished.
      </para>
  </refsect2>
   
  <refsect2 id="method-gtksourcebuffer--get-highlight">
    <title>gtksourceview.SourceBuffer.get_highlight</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>get_highlight</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara><literal>TRUE</literal> if the source highlighting is active, 
	      <literal>FALSE</literal> otherwise.</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The <methodname>get_highlight</methodname>() method returns the
      value of the "highlight" property which determines if the text highlighting is active.
    </para>
  </refsect2>      
      
  <refsect2 id="method-gtksourcebuffer--set-max-undo-levels">
    <title>gtksourceview.SourceBuffer.set_max_undo_levels</title>
    <programlisting><methodsynopsis language="python">
	    <methodname>set_max_undo_levels</methodname>
	    <methodparam><parameter role="keyword">max_undo_levels</parameter></methodparam>
	    </methodsynopsis></programlisting>
      
      <variablelist>
	      <varlistentry>
	      <term><parameter role="keyword">max_undo_levels</parameter>&nbsp;:</term>
	      <listitem><simpara>	 the desired maximum number of undo levels.</simpara></listitem>
	      </varlistentry>
      </variablelist>

      <para>
        The <methodname>set_max_undo_levels</methodname>() method Sets the number of undo levels for user actions
        the buffer will track. If the number of user actions exceeds the limit set by this function, older actions will be discarded.
      </para>
      <para>
        A new action is started whenever the function 
        <methodname><link linkend="method-gtktextbuffer--begin-user-action">begin_user_action</link></methodname>
        is called. In general, this happens whenever the user presses any key which modifies the buffer, but the undo manager 
        will try to merge similar consecutive actions, such as multiple character insertions into one action. 
        But, inserting a newline does start a new action.
      </para>
  </refsect2> 
   
  <refsect2 id="method-gtksourcebuffer--get-max-undo-levels">
    <title>gtksourceview.SourceBuffer.get_max_undo_levels</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>get_max_undo_levels</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara>the maximum number of possible undo levels.</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The <methodname>get_max_undo_levels</methodname>() method returns the
      value of the "max-undo-levels" property which determines the number of undo levels the buffer will track for buffer edits.
    </para>
  </refsect2>      
  
  <refsect2 id="method-gtksourcebuffer--set-language">
      <title>gtksourceview.SourceBuffer.set_language</title>
      <programlisting><methodsynopsis language="python">
	  <methodname>set_language</methodname>
	  <methodparam><parameter role="keyword">language</parameter></methodparam>
	  </methodsynopsis></programlisting>
      
      <variablelist>
	  <varlistentry>
	  <term><parameter role="keyword">language</parameter>&nbsp;:</term>
	  <listitem><simpara>A <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
    or <literal>None</literal>.</simpara></listitem>
	  </varlistentry>
      </variablelist>

      <para>
      The <methodname>set_check_brackets</methodname>() method Sets the 
      <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
      the source buffer will use, adding 
      <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> 
      tags with the language's patterns and setting the escape character with 
      <methodname><link linkend="method-gtksourcebuffer--set-escape-char">set_escape_char</link></methodname>.
      Note that this will remove any 
      <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> 
      tags currently in the buffer's tag table. The buffer holds a reference to the <parameter role="keyword">language</parameter> set.
	  </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-language">
    <title>gtksourceview.SourceBuffer.get_language</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_language</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> the 
        <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
        set by <methodname><link linkend="method-gtksourcebuffer--set-language">set_language</link></methodname>.
        </simpara></listitem>
	    </varlistentry>
    </variablelist>
    <para>
      The <methodname>get_check_brackets</methodname>() method determines the 
        <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link> 
        used by the buffer. The returned object should not be unreferenced by the user.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--set-escape-char">
      <title>gtksourceview.SourceBuffer.set_escape_char</title>
      <programlisting><methodsynopsis language="python">
	  <methodname>set_escape_char</methodname>
	  <methodparam><parameter role="keyword">escape_char</parameter></methodparam>
	  </methodsynopsis></programlisting>
      <variablelist>
	  <varlistentry>
	  <term><parameter role="keyword">escape_char</parameter>&nbsp;:</term>
	  <listitem><simpara> the escape character the buffer should use.</simpara></listitem>
	  </varlistentry>
      </variablelist>
    <para>
      The <methodname>set_check_brackets</methodname>() method sets the escape character to be used by the highlighting engine.
	  </para>
    <para>
    When performing the initial analysis, the engine will discard a matching syntax pattern if it's prefixed with an odd number 
    of escape characters. This allows for example to correctly highlight strings with escaped quotes embedded.
    </para>
    <para>
    This setting affects only syntax patterns (i.e. those defined in 
    <link linkend="class-gtksourcetag"><classname>gtksourceview.SourceTag</classname></link> tags).
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-escape-char">
    <title>gtksourceview.SourceBuffer.get_escape_char</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_escape_char</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> the UTF-8 character for the escape character the buffer is using.</simpara></listitem>
	    </varlistentry>
    </variablelist>
    <para>
      The <methodname>get_escape_char</methodname>() method determines the escaping character used by the source buffer highlighting engine.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--can-undo">
    <title>gtksourceview.SourceBuffer.can_undo</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>can_undo</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> <literal>TRUE</literal> if it's possible to undo the last action.</simpara></listitem>
	    </varlistentry>
    </variablelist>
    <para>
      The <methodname>can_undo</methodname>() method determines whether a source buffer can undo the last action.
    </para>
  </refsect2>
  
  <refsect2 id="method-gtksourcebuffer--can-redo">
    <title>gtksourceview.SourceBuffer.can_redo</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>can_redo</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> <literal>TRUE</literal> if a redo is possible.</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The <methodname>can_redo</methodname>() method Determines whether a source buffer can redo the last action 
      (i.e. if the last operation was an undo).
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--undo">
    <title>gtksourceview.SourceBuffer.undo</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>undo</methodname><methodparam></methodparam></methodsynopsis></programlisting>
    <para>
      The <methodname>undo</methodname>() Undoes the last user action which modified the buffer. Use 
      <methodname><link linkend="method-gtksourcebuffer--can-undo">can_undo</link></methodname> 
      to check whether a call to this function will have any effect.
    </para>
    <para>
      Actions are defined as groups of operations between a call to 
      <methodname><link linkend="method-gtktextbuffer--begin-user-action">begin_user_action</link></methodname>() and 
      <methodname><link linkend="method-gtktextbuffer--end-user-action">end_user_action</link></methodname>(), 
      or sequences of similar edits (inserts or deletes) on the same line.
    </para>
  </refsect2>
  
  <refsect2 id="method-gtksourcebuffer--redo">
    <title>gtksourceview.SourceBuffer.redo</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>redo</methodname><methodparam></methodparam></methodsynopsis></programlisting>
    <para>
      The <methodname>redo</methodname>() method redoes the last undo operation. Use 
      <methodname><link linkend="method-gtksourcebuffer--can-redo">can_redo</link></methodname>
      to check whether a call to this function will have any effect.
    </para>
  </refsect2> 

  <refsect2 id="method-gtksourcebuffer--begin-not-undoable-action">
    <title>gtksourceview.SourceBuffer.begin_not_undoable_action</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>begin_not_undoable_action</methodname><methodparam></methodparam></methodsynopsis></programlisting>
    <para>
      The <methodname>begin_not_undoable_action</methodname>() marks the beginning of a not undoable action on the buffer, 
      disabling the undo manager. Typically you would call this function before initially setting the contents of the buffer 
      (e.g. when loading a file in a text editor).
    </para>
    <para>
      You may nest <methodname><link linkend="method-gtksourcebuffer--begin-not-undoable-action">begin_not_undoable_action</link></methodname>() / 
      <methodname><link linkend="method-gtksourcebuffer--end-not-undoable-action">end_not_undoable_action</link></methodname>() blocks.
    </para>
    
  </refsect2>
  
  <refsect2 id="method-gtksourcebuffer--end-not-undoable-action">
    <title>gtksourceview.SourceBuffer.end_not_undoable_action</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>end_not_undoable_action</methodname><methodparam></methodparam></methodsynopsis></programlisting>
    <para>
      The <methodname>end_not_undoable_action</methodname>() method marks the end of a not undoable action on the buffer. 
      When the last not undoable block is closed through the call to this function, the list of undo actions is cleared 
      and the undo manager is re-enabled.
    </para>
  </refsect2> 

  <refsect2 id="method-gtksourcebuffer--create-marker">
    <title>gtksourceview.SourceBuffer.create_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>create_marker</methodname>
	  <methodparam><parameter role="keyword">name</parameter></methodparam>
	  <methodparam><parameter role="keyword">type</parameter></methodparam>
    <methodparam><parameter role="keyword">where</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
	  <varlistentry>
	  <term><parameter role="keyword">name</parameter>&nbsp;:</term>
    <listitem><simpara> the name of the marker, or <literal>None</literal>.</simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">type</parameter>&nbsp;:</term>
    <listitem><simpara> a string defining the marker type, or <literal>None</literal>.</simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">where</parameter>&nbsp;:</term>
    <listitem><simpara> location to place the marker.</simpara></listitem></varlistentry>
	  <varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term>
    <listitem><simpara> a new
    <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>
    </simpara></listitem></varlistentry>
    </variablelist>

    <para>
    The <methodname>set_marker_pixbuf</methodname>() method creates a marker in the 
    <methodname><link linkend="constructor-gtksourcebuffer">gtksourceview.SourceBuffer</link></methodname> of type 
    <parameter>type</parameter>. A marker is semantically very similar to a 
    <classname><link linkend="class-gtktextmark">gtk.TextMark</link></classname>, except it has a type which is used by the 
    <classname><link linkend="class-gtksourceview">gtksourceview.SourceView</link></classname> displaying the buffer to show 
    a pixmap on the left margin, at the line the marker is in. Because of this, a marker is generally associated to a line 
    and not a character position. Markers are also accessible through a position or range in the buffer.
    </para>
    <para>
    Markers are implemented using <classname><link linkend="class-gtktextmark">gtk.TextMark</link></classname>, so all 
    characteristics and restrictions to marks apply to markers too. These includes life cycle issues 
    and "mark-set" and "mark-deleted" signal emissions.
    </para>
    <para>
    Like a <classname><link linkend="class-gtktextmark">gtk.TextMark</link></classname>, a 
    <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>
    can be anonymous if the passed <parameter>name</parameter> is <literal>None</literal>. 
    Also, the buffer owns the markers so you shouldn't unreference it.
    </para>
    <para>
    Markers always have left gravity and are moved to the beginning of the line when the user deletes the line they were in. 
    Also, if the user deletes a region of text which contained lines with markers, those are deleted.
    </para>
    <para>
    Typical uses for a marker are bookmarks, breakpoints, current executing instruction indication in a source file, etc..
    </para>
    </refsect2>

  <refsect2 id="method-gtksourcebuffer--move-marker">
    <title>gtksourceview.SourceBuffer.move_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>move_marker</methodname>
	  <methodparam><parameter role="keyword">marker</parameter></methodparam>
    <methodparam><parameter role="keyword">where</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
	  <varlistentry>
    <term><parameter role="keyword">marker</parameter>&nbsp;:</term>
    <listitem><simpara> a <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>.</simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">where</parameter>&nbsp;:</term>
    <listitem><simpara> the new location for the marker.</simpara></listitem>
    </varlistentry>
    </variablelist>

    <para>
    Moves <parameter>marker</parameter> to the new location <parameter>where</parameter>.
    </para>
    </refsect2>

  <refsect2 id="method-gtksourcebuffer--delete-marker">
    <title>gtksourceview.SourceBuffer.delete_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>delete_marker</methodname>
	  <methodparam><parameter role="keyword">marker</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
	  <varlistentry>
    <term><parameter role="keyword">marker</parameter>&nbsp;:</term>
    <listitem><simpara> a <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>.</simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">where</parameter>&nbsp;:</term>
    <listitem><simpara> the new location for the marker.</simpara></listitem>
    </varlistentry>
    </variablelist>

    <para>
    Deletes <parameter>marker</parameter> from the source buffer. The same conditions as for 
    <classname><link linkend="class-gtktextmark">gtk.TextMark</link></classname>
    apply here. The marker is no longer accessible from the buffer, but if you held a reference to it, it will not be destroyed.
    </para>
    </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-marker">
    <title>gtksourceview.SourceBuffer.get_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_marker</methodname>
	  <methodparam><parameter role="keyword">name</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
	  <varlistentry>
    <term><parameter role="keyword">name</parameter>&nbsp;:</term>
    <listitem><simpara> name of the <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    to retreive.</simpara></listitem></varlistentry>
    </variablelist>

    <para>
    Looks up the <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    named <parameter role="keyword">name</parameter> in <parameter role="keyword">buffer</parameter>, returning 
    <literal>None</literal> if it doesn't exists.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-markers-in-region">
    <title>gtksourceview.SourceBuffer.get_markers_in_region</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_markers_in_region</methodname>
	  <methodparam><parameter role="keyword">begin</parameter></methodparam>
    <methodparam><parameter role="keyword">end</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
    <varlistentry><term><parameter role="keyword">begin</parameter>&nbsp;:</term>
    <listitem><simpara> beginning of the range.</simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">end</parameter>&nbsp;:</term>
    <listitem><simpara> end of the range.</simpara></listitem></varlistentry>
    <varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term>
    <listitem><simpara> a list of the <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    in the range.</simpara></listitem></varlistentry>
    </variablelist>

    <para>
    Returns an ordered (by position) list of <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    objects inside the region delimited by the <classname><link linkend="class-gtktextiter">gtk.TextIter</link></classname> 
    <parameter>begin</parameter> and <parameter>end</parameter>. The iters may be in any order.
    </para>
  </refsect2>    
    
  <refsect2 id="method-gtksourcebuffer--get-first-marker">
    <title>gtksourceview.SourceBuffer.get_first_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_first_marker</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> a reference to the first
        <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>, 
        or <literal>None</literal> if there are no markers in the buffer.
        </simpara></listitem>
	    </varlistentry>
    </variablelist>
    <para>
      Returns the first (nearest to the top of the buffer) marker in buffer.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-last-marker">
    <title>gtksourceview.SourceBuffer.get_last_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_last_marker</methodname>
	  <methodparam></methodparam></methodsynopsis></programlisting>
    <variablelist>
	    <varlistentry>
	      <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> a reference to the last
        <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link>, 
        or <literal>None</literal> if there are no markers in the buffer.
        </simpara></listitem>
	    </varlistentry>
    </variablelist>
    <para>
      Returns the last (nearest to the bottom of the buffer) marker in buffer.
    </para>
  </refsect2>    

  <refsect2 id="method-gtksourcebuffer--get-iter-at-marker">
    <title>gtksourceview.SourceBuffer.get_iter_at_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_iter_at_marker</methodname>
	  <methodparam><parameter role="keyword">iter</parameter></methodparam>
    <methodparam><parameter role="keyword">marker</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
    <varlistentry><term><parameter role="keyword">iter</parameter>&nbsp;:</term>
    <listitem><simpara> a <classname><link linkend="class-gtktextiter">gtk.TextIter</link></classname> to initialize.
    </simpara></listitem></varlistentry>
    <varlistentry><term><parameter role="keyword">marker</parameter>&nbsp;:</term>
    <listitem><simpara> a <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> of buffer.
    </simpara></listitem></varlistentry>
    </variablelist>

    <para>
    Initializes <parameter>iter</parameter> at the location of <parameter>marker</parameter>.
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-next-marker">
    <title>gtksourceview.SourceBuffer.get_next_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_next_marker</methodname>
	  <methodparam><parameter role="keyword">iter</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
    <varlistentry><term><parameter role="keyword">iter</parameter>&nbsp;:</term>
    <listitem><simpara> the location to start searching from.</simpara></listitem></varlistentry>
    <varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term>
    <listitem><simpara> the <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    nearest to the right of <parameter>iter</parameter>, or <literal>None</literal> if there are no more markers after 
    <parameter>iter</parameter>.</simpara></listitem></varlistentry>
    </variablelist>

    <para>
    Returns the nearest marker to the right of <parameter>iter</parameter>. If there are multiple markers at the same position, 
    this function will always return the first one (from the internal linked list), even if starting the search exactly at its location. 
    You can get the others using <methodname><link linkend="method-gtksourcemarker--next">next</link></methodname>().
    </para>
  </refsect2>

  <refsect2 id="method-gtksourcebuffer--get-prev-marker">
    <title>gtksourceview.SourceBuffer.get_prev_marker</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>get_prev_marker</methodname>
	  <methodparam><parameter role="keyword">iter</parameter></methodparam>
    </methodsynopsis></programlisting>
    <variablelist>
    <varlistentry><term><parameter role="keyword">iter</parameter>&nbsp;:</term>
    <listitem><simpara> the location to start searching from.</simpara></listitem></varlistentry>
    <varlistentry><term><emphasis>Returns</emphasis>&nbsp;:</term>
    <listitem><simpara> the <link linkend="class-gtksourcemarker"><classname>gtksourceview.SourceMarker</classname></link> 
    nearest to the left of <parameter>iter</parameter>, or <literal>None</literal> if there are no more markers before 
    <parameter>iter</parameter>.</simpara></listitem></varlistentry>
    </variablelist>

    <para>
    Returns the nearest marker to the left of <parameter>iter</parameter>. If there are multiple markers at the same position, 
    this function will always return the first one (from the internal linked list), even if starting the search exactly at its location. 
    You can get the others using <methodname><link linkend="method-gtksourcemarker--prev">prev</link></methodname>().
    </para>
  </refsect2>
</refsect1>  

<!-- ********************************** -->
<!-- BEGIN OF GTKSOURCEBUFFER FUNCTIONS -->
<!-- ********************************** -->

<refsect1>
    <title>Functions</title>

  <refsect2 id="function-gtksourcebuffer--new-with-language">
    <title>gtksourceview.SourceBuffer.gtk_source_buffer_new_with_language</title>
    <programlisting><methodsynopsis language="python">
  	  <methodname>gtksourceview.SourceBuffer.gtk_source_buffer_new_with_language</methodname>
      <methodparam><parameter role="keyword">language</parameter></methodparam>
      </methodsynopsis></programlisting>
        
    <variablelist>
	    <varlistentry>
        <term><parameter role="keyword">language</parameter>&nbsp;:</term>
        <listitem><simpara> a <link linkend="class-gtksourcelanguage"><classname>gtksourceview.SourceLanguage</classname></link>.
        </simpara></listitem>
      </varlistentry>
	    <varlistentry>
        <term><emphasis>Returns</emphasis>&nbsp;:</term>
	      <listitem><simpara> a new source buffer which will highlight text according to <parameter>language</parameter>.</simpara></listitem>
      </varlistentry>
    </variablelist>

      <para>
        Creates a new source buffer using the highlighting patterns in <parameter>language</parameter>. 
        This is equivalent to creating a new source buffer with the default tag table and then calling 
        <methodname><link linkend="method-gtksourcebuffer--set-language">set_language</link></methodname>
      </para>

  </refsect2>
</refsect1> 
  
<!-- ******************************** -->
<!-- BEGIN OF GTKSOURCEBUFFER SIGNALS -->
<!-- ******************************** --> 
 
<refsect1>
    <title>Signals</title>

  <refsect2 id="signal-gtksourcebuffer--can-redo">
    <title>The "can-redo" gtksourceview.SourceBuffer Signal</title>
    <programlisting><methodsynopsis language="python">
	  <methodname>callback</methodname>
	  <methodparam><parameter>sourcebuffer</parameter></methodparam>
    <methodparam><parameter>arg1</parameter></methodparam>
	  <methodparam><parameter>user_param1</parameter></methodparam>
	  <methodparam><parameter>...</parameter></methodparam>
	  </methodsynopsis></programlisting>

    <variablelist>
	    <varlistentry>
	      <term><parameter>sourcebuffer</parameter>&nbsp;:</term>
	      <listitem><simpara>the sourcebuffer that received the signal</simpara></listitem>
	    </varlistentry>
      <varlistentry>
	      <term><parameter>arg1</parameter>&nbsp;:</term>
          <listitem><simpara>TRUE if the buffer can now perform a redo.</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>user_param1</parameter>&nbsp;:</term>
          <listitem><simpara>the first user parameter (if any) specified with the 
          <link linkend="method-gobject--connect"><methodname>connect</methodname>()</link> method</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>...</parameter>&nbsp;:</term>
	      <listitem><simpara>additional user parameters (if any)</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The "can-redo" signal is emitted when there is a change in the buffer's ability to redo an operation.
    </para>

  </refsect2>

  <refsect2 id="signal-gtksourcebuffer--can-undo">
    <title>The "can-undo" gtksourceview.SourceBuffer Signal</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>callback</methodname>
	  <methodparam><parameter>sourcebuffer</parameter></methodparam>
	  <methodparam><parameter>arg1</parameter></methodparam>
    <methodparam><parameter>user_param1</parameter></methodparam>
	  <methodparam><parameter>...</parameter></methodparam>
	  </methodsynopsis></programlisting>

    <variablelist>
	    <varlistentry>
	      <term><parameter>sourcebuffer</parameter>&nbsp;:</term>
	      <listitem><simpara>the sourcebuffer that received the signal</simpara></listitem>
	    </varlistentry>
       <varlistentry>
	      <term><parameter>arg1</parameter>&nbsp;:</term>
          <listitem><simpara>TRUE if the buffer can now perform an undo.</simpara></listitem>
	    </varlistentry>     
	    <varlistentry>
	      <term><parameter>user_param1</parameter>&nbsp;:</term>
        <listitem><simpara>the first user parameter (if any) specified with the 
        <link linkend="method-gobject--connect"><methodname>connect</methodname>()</link> method</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>...</parameter>&nbsp;:</term>
	      <listitem><simpara>additional user parameters (if any)</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The "can-undo" signal is emitted when there is a change in the buffer's ability to undo an operation.
    </para>
  </refsect2>

  <refsect2 id="signal-gtksourcebuffer--highlight-updated">
    <title>The "highlight-updated" gtksourceview.SourceBuffer Signal</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>callback</methodname>
	  <methodparam><parameter>sourcebuffer</parameter></methodparam>
	  <methodparam><parameter>start</parameter></methodparam>
    <methodparam><parameter>end</parameter></methodparam>
    <methodparam><parameter>user_param1</parameter></methodparam>
	  <methodparam><parameter>...</parameter></methodparam>
	  </methodsynopsis></programlisting>

    <variablelist>
	    <varlistentry>
	      <term><parameter>sourcebuffer</parameter>&nbsp;:</term>
	      <listitem><simpara>the sourcebuffer that received the signal</simpara></listitem>
	    </varlistentry>
      <varlistentry>
	      <term><parameter>start</parameter>&nbsp;:</term>
          <listitem><simpara>the <classname><link linkend="class-gtktextiter">gtk.TextIter</link></classname>
          at the start of the updated region.</simpara></listitem>
	    </varlistentry>
      <varlistentry>
	      <term><parameter>end</parameter>&nbsp;:</term>
          <listitem><simpara>the <classname><link linkend="class-gtktextiter">gtk.TextIter</link></classname>
          at the end of the updated region.</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>user_param1</parameter>&nbsp;:</term>
        <listitem><simpara>the first user parameter (if any) specified with the 
        <link linkend="method-gobject--connect"><methodname>connect</methodname>()</link> method</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>...</parameter>&nbsp;:</term>
	      <listitem><simpara>additional user parameters (if any)</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The "highlight-updated" signal is emitted whenever the syntax highlighting information has been updated, 
      so that views can request a redraw if the region changed is visible. Usually only view widgets displaying 
      this buffer will be interested in this signal.
    </para>

  </refsect2>

  <refsect2 id="signal-gtksourcebuffer--marker-updated">
    <title>The "marker-updated" gtksourceview.SourceBuffer Signal</title>

    <programlisting><methodsynopsis language="python">
	  <methodname>callback</methodname>
	  <methodparam><parameter>sourcebuffer</parameter></methodparam>
	  <methodparam><parameter>arg1</parameter></methodparam>
    <methodparam><parameter>user_param1</parameter></methodparam>
	  <methodparam><parameter>...</parameter></methodparam>
	  </methodsynopsis></programlisting>

    <variablelist>
	    <varlistentry>
	      <term><parameter>sourcebuffer</parameter>&nbsp;:</term>
	      <listitem><simpara>the sourcebuffer that received the signal</simpara></listitem>
	    </varlistentry>
      <varlistentry>
	      <term><parameter>end</parameter>&nbsp;:</term>
          <listitem><simpara>the <classname><link linkend="class-gtktextiter">gtk.TextIter</link></classname>
          at the location where the change occurred.</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>user_param1</parameter>&nbsp;:</term>
        <listitem><simpara>the first user parameter (if any) specified with the 
        <link linkend="method-gobject--connect"><methodname>connect</methodname>()</link> method</simpara></listitem>
	    </varlistentry>
	    <varlistentry>
	      <term><parameter>...</parameter>&nbsp;:</term>
	      <listitem><simpara>additional user parameters (if any)</simpara></listitem>
	    </varlistentry>
    </variablelist>

    <para>
      The "can-undo" signal is emitted whenever a marker of <parameter>sourcebuffer</parameter> has changed and 
      needs to be redisplayed by the view. A change in a marker's type or location can trigger this signal.
    </para>
  </refsect2>
</refsect1>
</refentry>