[buffer-deserialize-text] Accept initial comma

src/hb-buffer-deserialize-json.hh

@@ -548,21 +548,19 @@ _hb_buffer_deserialize_json (hb_buffer_t *buffer,
   while (p < pe && ISSPACE (*p))
     p++;
   if (p < pe && *p == (buffer->len ? ',' : '['))
-  {
     *end_ptr = ++p;
-  }
 
   const char *tok = nullptr;
   int cs;
   hb_glyph_info_t info = {0};
   hb_glyph_position_t pos = {0};
   
-#line 554 "hb-buffer-deserialize-json.hh"
+#line 552 "hb-buffer-deserialize-json.hh"
 	{
 	cs = deserialize_json_start;
 	}
 
-#line 557 "hb-buffer-deserialize-json.hh"
+#line 555 "hb-buffer-deserialize-json.hh"
 	{
 	int _slen;
 	int _trans;
@@ -774,7 +772,7 @@ _resume:
 	*end_ptr = p;
 }
 	break;
-#line 735 "hb-buffer-deserialize-json.hh"
+#line 733 "hb-buffer-deserialize-json.hh"
 	}
 
 _again:
@@ -786,7 +784,7 @@ _again:
 	_out: {}
 	}
 
-#line 139 "hb-buffer-deserialize-json.rl"
+#line 137 "hb-buffer-deserialize-json.rl"
 
 
   *end_ptr = p;

src/hb-buffer-deserialize-json.rl

@@ -125,9 +125,7 @@ _hb_buffer_deserialize_json (hb_buffer_t *buffer,
   while (p < pe && ISSPACE (*p))
     p++;
   if (p < pe && *p == (buffer->len ? ',' : '['))
-  {
     *end_ptr = ++p;
-  }
 
   const char *tok = nullptr;
   int cs;

src/hb-buffer-deserialize-text-glyphs.rl

@@ -93,7 +93,7 @@ glyph_item	=
 
 glyphs = glyph_item (space* '|' space* glyph_item)* space* ('|'|']');
 
-main := space* '[' glyphs;
+main := space* glyphs;
 
 }%%
 
@@ -111,6 +111,8 @@ _hb_buffer_deserialize_text_glyphs (hb_buffer_t *buffer,
 
   while (p < pe && ISSPACE (*p))
     p++;
+  if (p < pe && *p == (buffer->len ? ',' : '['))
+    *end_ptr = ++p;
 
   const char *tok = nullptr;
   int cs;

src/hb-buffer-deserialize-text-unicodes.rl

@@ -75,7 +75,7 @@ unicode_item	=
 
 unicodes = unicode_item (space* '|' space* unicode_item)* space* ('|'|'>');
 
-main := space* '<' unicodes;
+main := space* unicodes;
 
 }%%
 
@@ -90,6 +90,8 @@ _hb_buffer_deserialize_text_unicodes (hb_buffer_t *buffer,
 
   while (p < pe && ISSPACE (*p))
     p++;
+  if (p < pe && *p == (buffer->len ? ',' : '<'))
+    *end_ptr = ++p;
 
   const char *tok = nullptr;
   int cs;