Respond to CR.

// FREEBIE

Scripts/emoji_ranges.py

@@ -10,6 +10,9 @@ def fail(message):
     print message
     sys.exit(1)
 
+# For simplicity and compactness, we pre-define the 
+# emoji code planes to ensure that all of the currently-used
+# emoji ranges within them are combined.
 big_ranges = [
         (0x1F600,0x1F64F, ),
         (0x1F300,0x1F5FF, ),
@@ -22,8 +25,6 @@ big_ranges = [
         (8400, 8447,)
         ]
 
-# def is_in_big_range(range_start, range_end)
-
 if __name__ == '__main__':
     src_filename = "emoji-data.txt"
     src_dir_path = os.path.dirname(__file__)
@@ -80,5 +81,8 @@ if __name__ == '__main__':
         # print '0x%X...0x%X, // %d Emotions' % (range_start, range_end, (1 + range_end - range_start), )
         print 'EmojiRange(rangeStart:0x%X, rangeEnd:0x%X),' % (range_start, range_end, )
     print 'new_ranges:', len(new_ranges)
+    print
+    print 'Copy and paste the code above into DisplayableText.swift'
+    print 
         
         

Signal/src/util/DisplayableText.swift

@@ -22,6 +22,11 @@ extension UnicodeScalar {
     // https://www.unicode.org/Public/emoji/
     // Current Version:
     // https://www.unicode.org/Public/emoji/6.0/emoji-data.txt
+    //
+    // These ranges can be code-generated using:
+    //
+    // * Scripts/emoji-data.txt 
+    // * Scripts/emoji_ranges.py
     static let kEmojiRanges = [
         EmojiRange(rangeStart:0x23, rangeEnd:0x23),
         EmojiRange(rangeStart:0x2A, rangeEnd:0x2A),