Marcel Taeumel uploaded a new version of TrueType to project The Trunk:
http://source.squeak.org/trunk/TrueType-mt.63.mcz

==================== Summary ====================

Name: TrueType-mt.63
Author: mt
Time: 5 February 2022, 7:51:30.426366 pm
UUID: 30e76ca2-1832-f442-9463-e9168ba20851
Ancestors: TrueType-mt.62

Let TrueType fonts report accurately on #minCodePoint and #maxCodePoint. We might want to make both a quick-return. Hmm...

=============== Diff against TrueType-mt.62 ===============

Item was changed:
  AbstractFont subclass: #TTCFont
+ 	instanceVariableNames: 'ttcDescription pointSize foregroundColor cache derivatives fallbackFont height ascent descent colorToCacheMap lineGap lineGapSlice minCodePoint maxCodePoint'
- 	instanceVariableNames: 'ttcDescription pointSize foregroundColor cache derivatives fallbackFont height ascent descent maxAscii colorToCacheMap lineGap lineGapSlice'
  	classVariableNames: 'GlyphCacheData GlyphCacheIndex GlyphCacheReady GlyphCacheSize NamesToIndexes Registry Scale ShutdownList'
  	poolDictionaries: ''
  	category: 'TrueType-Fonts'!
  
  !TTCFont commentStamp: 'nk 4/2/2004 11:32' prior: 0!
  I represent a font that uses TrueType derived glyph.  Upon a request for glyph for a character through a call to #formOf: (or #widthOf:), I first search corresponding glyph in the cache.  If there is not, it creates a 32bit depth form with the glyph.
  
    The cache is weakly held.  The entries are zapped at full GC.
  
  Structure:
   ttcDescription	TTFontDescription -- The Squeak data structure for a TrueType font data file.
   pointSize		Number -- Nominal Em size in points. Conversion to pixel sizes depends on the definition of TextStyle class>>pixelsPerInch.
   foregroundColor	Color -- So far, this font need to know the glyph color in cache.
   cache			WeakArray of <Color -> <Array(256) of glyph>>
   derivatives		Array -- stores the fonts in the same family but different emphasis.
  !

Item was added:
+ ----- Method: TTCFont>>isSymbolFont (in category 'testing') -----
+ isSymbolFont
+ 
+ 	^ (self hasGlyphOf: $a) not!

Item was changed:
  ----- Method: TTCFont>>maxCodePoint (in category 'accessing') -----
  maxCodePoint
  
+ 	^ maxCodePoint ifNil: [maxCodePoint := ((ttcDescription size - 1 to: 0 by: -1)
+ 		detect: [:ea | (ttcDescription at: ea) isFallback not] ifNone: [0])]!
- 	^maxAscii ifNil: [ttcDescription size - 1]!

Item was added:
+ ----- Method: TTCFont>>minCodePoint (in category 'accessing') -----
+ minCodePoint
+ 
+ 	^ minCodePoint ifNil: [minCodePoint := (0 to: ttcDescription size - 1)
+ 		detect: [:ea | (ttcDescription at: ea) isFallback not] ifNone: [1]]!