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-rw-r--r--thirdparty/harfbuzz/src/hb-aat-layout-morx-table.hh15
1 files changed, 12 insertions, 3 deletions
diff --git a/thirdparty/harfbuzz/src/hb-aat-layout-morx-table.hh b/thirdparty/harfbuzz/src/hb-aat-layout-morx-table.hh
index 2f99510925..aa4ad4cf3c 100644
--- a/thirdparty/harfbuzz/src/hb-aat-layout-morx-table.hh
+++ b/thirdparty/harfbuzz/src/hb-aat-layout-morx-table.hh
@@ -123,7 +123,7 @@ struct RearrangementSubtable
bool reverse_l = 3 == (m >> 4);
bool reverse_r = 3 == (m & 0x0F);
- if (end - start >= l + r)
+ if (end - start >= l + r && end-start <= HB_MAX_CONTEXT_LENGTH)
{
buffer->merge_clusters (start, hb_min (buffer->idx + 1, buffer->len));
buffer->merge_clusters (start, end);
@@ -980,6 +980,15 @@ struct Chain
setting = HB_AAT_LAYOUT_FEATURE_SELECTOR_LOWER_CASE_SMALL_CAPS;
goto retry;
}
+#ifndef HB_NO_AAT
+ else if (type == HB_AAT_LAYOUT_FEATURE_TYPE_LANGUAGE_TAG_TYPE && setting &&
+ /* TODO: Rudimentary language matching. */
+ hb_language_matches (map->face->table.ltag->get_language (setting - 1), map->props.language))
+ {
+ flags &= feature.disableFlags;
+ flags |= feature.enableFlags;
+ }
+#endif
}
}
return flags;
@@ -1038,12 +1047,12 @@ struct Chain
goto skip;
if (reverse)
- _hb_ot_layout_reverse_graphemes (c->buffer);
+ c->buffer->reverse ();
subtable->apply (c);
if (reverse)
- _hb_ot_layout_reverse_graphemes (c->buffer);
+ c->buffer->reverse ();
(void) c->buffer->message (c->font, "end chainsubtable %d", c->lookup_index);