emacs-28 92e2d19fe7: One more fix of the BPA implementation

[Eli Zaretskii]

branch: emacs-28
commit 92e2d19fe787ce73db15d1549880b54743c0d929
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    One more fix of the BPA implementation
    
    * src/bidi.c (bidi_find_bracket_pairs): Disable BPA optimization
    when there are no strong directional characters inside the
    bracketed pair.  (Bug#54219)
---
 src/bidi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/bidi.c b/src/bidi.c
index 5f47d9e9a7..a548960048 100644
--- a/src/bidi.c
+++ b/src/bidi.c
@@ -2758,6 +2758,7 @@ bidi_find_bracket_pairs (struct bidi_it *bidi_it)
         (which requires the display engine to copy the cache back and
         forth many times).  */
       if (maxlevel == base_level
+         && (l2r_seen || r2l_seen) /* N0d */
          && ((base_level == 0 && !r2l_seen)
              || (base_level == 1 && !l2r_seen)))
        {