patch 7.4.1691
Problem: When switching to a new buffer and an autocommand applies syntax
highlighting an ml_get error may occur.
Solution: Check "syn_buf" against the buffer in the window. (Alexander von
Buddenbrock, closes #676)
diff --git a/src/syntax.c b/src/syntax.c
index 29b6888..a43f4a6 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -509,7 +509,9 @@
* Also do this when a change was made, the current state may be invalid
* then.
*/
- if (syn_block != wp->w_s || changedtick != syn_buf->b_changedtick)
+ if (syn_block != wp->w_s
+ || syn_buf != wp->w_buffer
+ || changedtick != syn_buf->b_changedtick)
{
invalidate_current_state();
syn_buf = wp->w_buffer;