[Indic] Implement dotted-circle insertion for broken clusters
No panic, we reeally insert dotted circle when it's absolutely broken.
Fixes most of the dotted-circle cases against Uniscribe. (for Devanagari
fixes 80% of them, for Khmer 70%; the rest look like Uniscribe being
really bogus...)
I had to make a decision. Apparently Uniscribe adds one dotted circle
to each broken character. I tried that, but that goes wrong easily with
split matras. So I made it add only one dotted circle to an entire
broken syllable tail. As in: "if there was a dotted circle here, this
would have formed a correct cluster." That works better for split
stuff, and I like it more.
diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index 3f039d0..f25a8bc 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -268,6 +268,16 @@
}
void
+hb_buffer_t::output_info (hb_glyph_info_t &glyph_info)
+{
+ if (unlikely (!make_room_for (0, 1))) return;
+
+ out_info[out_len] = glyph_info;
+
+ out_len++;
+}
+
+void
hb_buffer_t::copy_glyph (void)
{
if (unlikely (!make_room_for (0, 1))) return;
