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Fix redisplay of glyphless characters

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* src/conf_post.h (bool_bf): Use 'unsigned int' in the MinGW
builds.  Suggested by Tom Tromey <tom@tromey.com>.  (Bug#33017)
* src/dispnew.c (scrolling_window): Update commentary
regarding xwidget builds.
This commit is contained in:
Eli Zaretskii 2018-10-13 19:47:01 +03:00
parent 8fc892df37
commit e724a8f669
2 changed files with 11 additions and 4 deletions
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8
src/conf_post.h
View File

@ -48,9 +48,11 @@ along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
#endif
/* The type of bool bitfields. Needed to compile Objective-C with
standard GCC. It was also needed to port to pre-C99 compilers,
although we don't care about that any more. */
#if NS_IMPL_GNUSTEP
standard GCC, and to make sure adjacent bool_bf fields are packed
into the same 1-, 2-, or 4-byte allocation unit in the MinGW
builds. It was also needed to port to pre-C99 compilers, although
we don't care about that any more. */
#if NS_IMPL_GNUSTEP || defined(__MINGW32__)
typedef unsigned int bool_bf;
#else
typedef bool bool_bf;

7
src/dispnew.c
View File

@ -4125,7 +4125,12 @@ scrolling_window (struct window *w, bool header_line_p)
}
#ifdef HAVE_XWIDGETS
/* Currently this seems needed to detect xwidget movement reliably. */
/* Currently this seems needed to detect xwidget movement reliably.
This is most probably because an xwidget glyph is represented in
struct glyph's 'union u' by a pointer to a struct, which takes 8
bytes in 64-bit builds, and thus the comparison of u.val values
done by GLYPH_EQUAL_P doesn't work reliably, since it assumes the
size of the union is 4 bytes. FIXME. */
return 0;
#endif