[unsafe-to-break] Add UNSAFE_TO_BREAK flag
Not all shapers code is updated to set this properly.
GSUB and Arabic shaper are updated.
GPOS and other shapers are NOT.
Fixes https://github.com/behdad/harfbuzz/issues/224
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index bf289c1..995191a 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -63,7 +63,7 @@
*/
typedef struct hb_glyph_info_t {
hb_codepoint_t codepoint;
- hb_mask_t mask;
+ hb_mask_t mask; /* Holds hb_glyph_flags_t after hb_shape() */
uint32_t cluster;
/*< private >*/
@@ -71,6 +71,11 @@
hb_var_int_t var2;
} hb_glyph_info_t;
+typedef enum { /*< flags >*/
+ HB_GLYPH_FLAG_UNSAFE_TO_BREAK = 0x00000002,
+ HB_GLYPH_FLAG_DEFINED = 0x00000002 /* OR of all defined flags */
+} hb_glyph_flags_t;
+
/**
* hb_glyph_position_t:
* @x_advance: how much the line advances after drawing this glyph when setting
@@ -403,7 +408,8 @@
HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS = 0x00000001u,
HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS = 0x00000002u,
HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES = 0x00000004u,
- HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS = 0x00000008u
+ HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS = 0x00000008u,
+ HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS = 0x00000010u
} hb_buffer_serialize_flags_t;
/**
