[subset] For option "--unicodes", add support for "*" to retain all code points

test/subset/data/tests/basics.tests

@@ -15,3 +15,4 @@ b
 c
 ac
 a
+*

test/subset/subset_test_suite.py

@@ -12,6 +12,9 @@ class Test:
 		self.subset = subset
 
 	def unicodes(self):
+		if self.subset == '*':
+			return self.subset[0]
+		else:
 			return ",".join("%X" % ord(c) for (i, c) in enumerate(self.subset))
 
 	def get_profile_flags(self):
@@ -23,6 +26,11 @@ class Test:
 		font_base_name_parts = os.path.splitext(font_base_name)
 		profile_name = os.path.splitext(os.path.basename(self.profile_path))[0]
 
+		if self.unicodes() == "*":
+			return "%s.%s.retain-all-codepoint%s" % (font_base_name_parts[0],
+				       profile_name,
+				       font_base_name_parts[1])
+		else:
 			return "%s.%s.%s%s" % (font_base_name_parts[0],
 				       profile_name,
 				       self.unicodes(),
@@ -39,9 +47,9 @@ class SubsetTestSuite:
 
 	def __init__(self, test_path, definition):
 		self.test_path = test_path
-		self.fonts = set()
+		self.fonts = []
-		self.profiles = set()
+		self.profiles = []
-		self.subsets = set()
+		self.subsets = []
 		self._parse(definition)
 
 	def get_output_directory(self):
@@ -87,6 +95,6 @@ class SubsetTestSuite:
 			if line in destinations:
 				current_destination = destinations[line]
 			elif current_destination is not None:
-				current_destination.add(line)
+				current_destination.append(line)
 			else:
 				raise Exception("Failed to parse test suite file.")

util/hb-subset.cc

@@ -53,6 +53,13 @@ struct subset_consumer_t
   {
     // TODO(Q1) does this only get called with at least 1 codepoint?
     hb_set_t *codepoints = hb_subset_input_unicode_set (input);
+    if (0 == strcmp (text, "*"))
+    {
+      hb_face_t *face = hb_font_get_face (font);
+      hb_face_collect_unicodes (face, codepoints);
+      return;
+    }
+
     gchar *c = (gchar *)text;
     do {
       gunichar cp = g_utf8_get_char(c);

util/options.cc

@@ -349,6 +349,13 @@ parse_unicodes (const char *name G_GNUC_UNUSED,
   }
 
   GString *gs = g_string_new (nullptr);
+  if (0 == strcmp (arg, "*")) 
+  {
+    g_string_append_c (gs, '*');
+  }
+  else
+  {
+
     char *s = (char *) arg;
     char *p;
   
@@ -372,6 +379,7 @@ parse_unicodes (const char *name G_GNUC_UNUSED,
   
       s = p;
     }
+  }
 
   text_opts->text_len = gs->len;
   text_opts->text = g_string_free (gs, FALSE);