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dominion525 / noto

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GSUB (and GPOS?) bloated #105

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
As I reported here:
https://github.com/adobe-fonts/source-han-sans/issues/46

I see multiple copies of the same features. Eg:

  <FeatureRecord index="0"> 
    <FeatureTag value="aalt"/> 
    <Feature> 
      <!-- LookupCount=2 --> 
      <LookupListIndex index="0" value="0"/> 
      <LookupListIndex index="1" value="1"/> 
    </Feature> 
  </FeatureRecord> 
  <FeatureRecord index="1"> 
    <FeatureTag value="aalt"/> 
    <Feature> 
      <!-- LookupCount=2 --> 
      <LookupListIndex index="0" value="0"/> 
      <LookupListIndex index="1" value="1"/> 
    </Feature> 
  </FeatureRecord> 
  <FeatureRecord index="2"> 
    <FeatureTag value="aalt"/> 
    <Feature> 
      <!-- LookupCount=2 --> 
      <LookupListIndex index="0" value="0"/> 
      <LookupListIndex index="1" value="1"/> 
    </Feature> 
  </FeatureRecord> 
  <FeatureRecord index="3"> 
    <FeatureTag value="aalt"/> 
    <Feature> 
      <!-- LookupCount=2 --> 
      <LookupListIndex index="0" value="0"/> 
      <LookupListIndex index="1" value="1"/> 
    </Feature> 
  </FeatureRecord> 
  <FeatureRecord index="4"> 
    <FeatureTag value="aalt"/> 
    <Feature> 
      <!-- LookupCount=2 --> 
      <LookupListIndex index="0" value="0"/> 
      <LookupListIndex index="1" value="1"/> 
    </Feature> 
  </FeatureRecord> 

It makes reading the GSUB tables very hard unnecessarily.
The snippet above is from NotoSansCJK-Regular, but I suppose it's the same with 
Source Han Sans.

Original issue reported on code.google.com by behdad@google.com on 31 Jul 2014 at 8:27

GoogleCodeExporter commented 9 years ago

Original comment by stua...@google.com on 28 Feb 2015 at 12:06