[unsafe-to-break] Copy flag to all glyphs in a cluster
Makes consumption easier.
diff --git a/src/hb-ot-shape.cc b/src/hb-ot-shape.cc
index 5cd6992..bc53669 100644
--- a/src/hb-ot-shape.cc
+++ b/src/hb-ot-shape.cc
@@ -783,6 +783,31 @@
_hb_buffer_deallocate_gsubgpos_vars (c->buffer);
}
+static inline void
+hb_propagate_flags (hb_buffer_t *buffer)
+{
+ /* Propagate cluster-level glyph flags to be the same on all cluster glyphs.
+ * Simplifies using them. */
+
+ if (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_UNSAFE_TO_BREAK))
+ return;
+
+ hb_glyph_info_t *info = buffer->info;
+
+ foreach_cluster (buffer, start, end)
+ {
+ unsigned int mask = 0;
+ for (unsigned int i = start; i < end; i++)
+ if (info[i].mask & HB_GLYPH_FLAG_UNSAFE_TO_BREAK)
+ {
+ mask = HB_GLYPH_FLAG_UNSAFE_TO_BREAK;
+ break;
+ }
+ if (mask)
+ for (unsigned int i = start; i < end; i++)
+ info[i].mask |= mask;
+ }
+}
/* Pull it all together! */
@@ -826,6 +851,8 @@
if (c->plan->shaper->postprocess_glyphs)
c->plan->shaper->postprocess_glyphs (c->plan, c->buffer, c->font);
+ hb_propagate_flags (c->buffer);
+
_hb_buffer_deallocate_unicode_vars (c->buffer);
c->buffer->props.direction = c->target_direction;
