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There is still a bug in the Pablo infrastructure (codepoint-properties branch at #541e28fc) that can be illustrated with the following commands:

Generates incorrect output

bin/xch slc cap-sharp-s -U21

Generates correct output

bin/xch slc cap-sharp-s -U21 -DisableIfHierarchy

Note that the file cap-sharp-s is attached to this issue.

If adding the -illustrator-width=100 parameter, the following outputs are realized, showing that the incorrect bit first appears in the u32basis[12-15] data. The ApplyTransform routine is the culprit.

Incorrect:

       ByteStream | ....
   BasisBits[4-7] | EB90
   BasisBits[0-3] | 1AEA
          u8index | ..11
       U21[20-20] | 00
       U21[16-19] | 00
       U21[12-15] | 10
        U21[8-11] | E0
         U21[4-7] | 90
         U21[0-3] | EA
  u32basis[20-20] | 00
  u32basis[16-19] | 00
  u32basis[12-15] | 20
   u32basis[8-11] | 00
    u32basis[4-7] | D0
    u32basis[0-3] | FA
          u8final | ..11
        u8initial | 1..1
      u8mask12_17 | 1..1
       u8mask6_11 | .1.1
     deposit18_20 | 0000
deposit12_17[4-5] | 0000
deposit12_17[0-3] | 2000
 deposit6_11[4-5] | 0000
 deposit6_11[0-3] | 0300
  deposit0_5[4-5] | 0010
  deposit0_5[0-3] | 00FA
 OutputBasis[4-7] | E890
 OutputBasis[0-3] | 23FA

Correct:

       ByteStream | ....
   BasisBits[4-7] | EB90
   BasisBits[0-3] | 1AEA
          u8index | ..11
       U21[20-20] | 00
       U21[16-19] | 00
       U21[12-15] | 10
        U21[8-11] | E0
         U21[4-7] | 90
         U21[0-3] | EA
  u32basis[20-20] | 00
  u32basis[16-19] | 00
  u32basis[12-15] | 00
   u32basis[8-11] | 00
    u32basis[4-7] | D0
    u32basis[0-3] | FA
          u8final | .11
        u8initial | 1.1
      u8mask12_17 | 1.1
       u8mask6_11 | 1.1
     deposit18_20 | 000
deposit12_17[4-5] | 000
deposit12_17[0-3] | 000
 deposit6_11[4-5] | 000
 deposit6_11[0-3] | 300
  deposit0_5[4-5] | 010
  deposit0_5[0-3] | 0FA
 OutputBasis[4-7] | C90
 OutputBasis[0-3] | 3FA

cap-sharp-s