Fix bug #9221 with resource allocation under word-wrap.

Add diagnostic facility for monitoring memory allocated for cache shelving.

 src/xdisp.c (display_line): Release buffer allocated for shelved bidi
 cache.  (Bug#9221)
 src/bidi.c (bidi_shelve_cache, bidi_unshelve_cache): Track total
 amount allocated this far in `bidi_cache_total_alloc'.
 (bidi_unshelve_cache): Accept an additional argument JUST_FREE; if
 non-zero, only free the data buffer without restoring the cache
 contents.  All callers changed.
 src/dispextern.h (bidi_unshelve_cache): Update prototype.
 src/xdisp.c (SAVE_IT, pos_visible_p, move_it_in_display_line_to)
 (move_it_in_display_line, move_it_to)
 (move_it_vertically_backward, move_it_by_lines): Replace the call
 to xfree to an equivalent call to bidi_unshelve_cache.
 (move_it_in_display_line_to): Fix logic of returning
 MOVE_POS_MATCH_OR_ZV in the bidi case.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/indent.c b/src/indent.c
index a73284c665..3f7b3efe3b 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -2135,7 +2135,7 @@ whether or not it is currently displayed in some window.  */)
 	}
 
       SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
-      bidi_unshelve_cache (itdata);
+      bidi_unshelve_cache (itdata, 0);
     }
 
   if (BUFFERP (old_buffer))