| Date: Wed, 23 Nov 2016 19:17:59 +0100
Fixed 'missing glyph doesn't use fontconfig config substitutions' bug
XftFontMatch does display-specific font configuration (commit 528241a).
Nice. Unfortunately, when we switched from FcFontMatch, we also stopped
storing the post-Fc{Config,Default}Substitute FcPattern for future
lookups. The result is that if a glyph isn't found in the primary font,
secondary font lookups use the original FcPattern, not the configured
one. If you have custom fontconfig rules (like me), this can be
disappointing.
I basically just copied the guts out of XftFontMatch[1] and saved
the intermediate configured FcPattern. Could be related to the bug that
inspired commit 4242027.
[1]: https://cgit.freedesktop.org/xorg/lib/libXft/tree/src/xftfont.c
Diffstat:
st.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)
--- |
| @@ -3373,16 +3373,32 @@ xgeommasktogravity(int mask)
int
xloadfont(Font *f, FcPattern *pattern)
{
+ FcPattern *configured;
FcPattern *match;
FcResult result;
XGlyphInfo extents;
int wantattr, haveattr;
- match = XftFontMatch(xw.dpy, xw.scr, pattern, &result);
- if (!match)
+ /*
+ * Manually configure instead of calling XftMatchFont
+ * so that we can use the configured pattern for
+ * "missing glyph" lookups.
+ */
+ configured = FcPatternDuplicate(pattern);
+ if (!configured)
+ return 1;
+
+ FcConfigSubstitute(NULL, configured, FcMatchPattern);
+ XftDefaultSubstitute(xw.dpy, xw.scr, configured);
+
+ match = FcFontMatch(NULL, configured, &result);
+ if (!match) {
+ FcPatternDestroy(configured);
return 1;
+ }
if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
+ FcPatternDestroy(configured);
FcPatternDestroy(match);
return 1;
}
@@ -3414,7 +3430,7 @@ xloadfont(Font *f, FcPattern *pattern)
strlen(ascii_printable), &extents);
f->set = NULL;
- f->pattern = FcPatternDuplicate(pattern);
+ f->pattern = configured;
f->ascent = f->match->ascent;
f->descent = f->match->descent; |