+/* If the user has requested the long scans caching, make sure that
+ BIDI cache is enabled. Otherwise, make sure it's disabled. */
+
+static struct region_cache *
+bidi_paragraph_cache_on_off (void)
+{
+ if (NILP (BVAR (current_buffer, cache_long_scans)))
+ {
+ if (current_buffer->bidi_paragraph_cache)
+ {
+ free_region_cache (current_buffer->bidi_paragraph_cache);
+ current_buffer->bidi_paragraph_cache = 0;
+ }
+ return NULL;
+ }
+ else
+ {
+ if (!current_buffer->bidi_paragraph_cache)
+ current_buffer->bidi_paragraph_cache = new_region_cache ();
+ return current_buffer->bidi_paragraph_cache;
+ }
+}
+