Merge from origin/emacs-27

35661ef943 (origin/emacs-27) Fix typo in "(elisp) Type Keywords"
1af0e95fec Gnus nnir-summary-line-format has no effect
dd366b5d3b Improve documentation of 'window-text-pixel-size'
fbd49f969e * src/xdisp.c (Fwindow_text_pixel_size): Doc fix.  (Bug#41...
d8593fd19f Minor improvements to EDE and EIEIO manuals
3916e63f9e Have Fido mode also imitate Ido mode in ignore-case options
cc35b197c7 Update package-menu-quick-help
bf09106256 Improve documentation of 'sort-subr'
73749efa13 Update Ukrainian transliteration
30a7ee505a Fix Arabic shaping when eww/shr fill the text to be rendered
7d323f07c0 Silence some byte-compiler warnings in tests
cf473e742f * test/lisp/battery-tests.el: New file.
b07e3b1d97 Improve format-spec documentation (bug#41571)

# Conflicts:
#	test/lisp/emacs-lisp/package-tests.el

1 files changed, 6 insertions, 1 deletions

diff --git a/src/hbfont.c b/src/hbfont.c
index 576c5fe7f60..4b3f64ef504 100644
--- a/src/hbfont.c
+++ b/src/hbfont.c
@@ -26,6 +26,7 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include "composite.h"
 #include "font.h"
 #include "dispextern.h"
+#include "buffer.h"
 
 #ifdef HAVE_NTGUI
 
@@ -438,7 +439,11 @@ hbfont_shape (Lisp_Object lgstring, Lisp_Object direction)
 
   /* If the caller didn't provide a meaningful DIRECTION, let HarfBuzz
      guess it. */
-  if (!NILP (direction))
+  if (!NILP (direction)
+      /* If they bind bidi-display-reordering to nil, the DIRECTION
+         they provide is meaningless, and we should let HarfBuzz guess
+         the real direction.  */
+      && !NILP (BVAR (current_buffer, bidi_display_reordering)))
     {
       hb_direction_t dir = HB_DIRECTION_LTR;
       if (EQ (direction, QL2R))