[gtksourceview] Stop matching bracket search when going out of context class

[Jesse van den Kieboom <jessevdk src gnome org>]

commit c6f24e396e863a3aa14988ca5395e7c0788fd0ec
Author: Jesse van den Kieboom <jesse vandenkieboom epfl ch>
Date:   Sun Jan 3 13:43:55 2010 +0100

    Stop matching bracket search when going out of context class
    
    This stops the matching bracket search if the set of context
    classes that apply to the matching end iter is _smaller_ then the
    set of classes that apply to the start matching iter.
    
    In effect this means that you stop search if you go outside of the
    scope (in terms of context classes) that apply to the starting
    bracket, and thus will only match brackets in the same string
    or comment (this does not affect outside-of string/comment
    brackets).
    
    Note: This works well with the current classes and how they are
    defined but might need some refinement if we are adding
    more classes.

 gtksourceview/gtksourcebuffer.c |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcebuffer.c b/gtksourceview/gtksourcebuffer.c
index 02e1e80..82c03a8 100644
--- a/gtksourceview/gtksourcebuffer.c
+++ b/gtksourceview/gtksourcebuffer.c
@@ -931,12 +931,24 @@ gtk_source_buffer_find_bracket_match_real (GtkSourceBuffer *buffer,
 	char_cont = 0;
 
 	do {
+		gint current_mask;
+
 		gtk_text_iter_forward_chars (&iter, addition);
 		cur_char = gtk_text_iter_get_char (&iter);
 		++char_cont;
 
+		current_mask = get_context_class_mask (buffer, &iter);
+
+		/* Check if we lost a class, which means we don't look any
+		   further */
+		if (current_mask < cclass_mask)
+		{
+			found = FALSE;
+			break;
+		}
+
 		if ((cur_char == search_char || cur_char == base_char) &&
-		    cclass_mask == get_context_class_mask (buffer, &iter))
+		    cclass_mask == current_mask)
 		{
 			if ((cur_char == search_char) && counter == 0) {
 				found = TRUE;