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[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #4876 The wron

From: Auto mailings of changes to Lily Issues
Subject: [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #4876 The wrong font name is embedded by using some OTF / OTC fonts
Date: Thu, 23 Jun 2016 11:01:02 +0000

LilyPond 2.19.44 with FreeType 2.6.3 cannot handle non-Japanese (e.g. Chinese or Korean) fonts in NotoSansCJK.ttc ver. 1.004.
LilyPond 2.19.44 with FreeType 2.5.5 can handle them, but it embeds Japanese font name.

If I understand correctly,
for non-Japanese fonts in NotoSansCJK.ttc, font name in 'name' table and 'CFF' table is different.
For Japanese fonts in it, they are consistent.

font-index 12:
'name' table: NotoSansCJKjp-Regular (Japanese)
'CFF ' table: NotoSansCJKjp-Regular (Japanese)
font-index 13:
'name' table: NotoSansCJKkr-Regular (Korean)
'CFF ' table: NotoSansCJKjp-Regular (Japanese)
font-index 14:
'name' table: NotoSansCJKsc-Regular (Simplified Chinese)
'CFF ' table: NotoSansCJKjp-Regular (Japanese)
font-index 15:
'name' table: NotoSansCJKtc-Regular (Traditional Chinese)
'CFF ' table: NotoSansCJKjp-Regular (Japanese)

With FreeType 2.5.5, LilyPond uses Japanese font name that is in 'CFF' table.
And it embeds the 'CFF' table that contains Japanese font name.
So both font names are consistent. It works fine even if they are wrong name.

On the other hand, with FreeType 2.6.3, if you use non-Japanese font, LilyPond uses non-Japanese font name that is in 'name' table.
However, it embeds the 'CFF' table that contains Japanese font name.
So both font names are not consistent. It does not work fine.

I think that there are two solutions for solving this problem.

Use 'CFF' table's name even if it is the wrong name.
This behavior is similar to "with FreeType 2.5.5".
The name may be wrong.

Use 'name' table's name and rewrite 'CFF' table's name for embedding.
This behavior can embed correct font name.

Which would you like?
I think that rewriting 'CFF' table is a little difficult.

[issues:#4876] The wrong font name is embedded by using some OTF / OTC fonts

Status: Accepted
Created: Thu Jun 02, 2016 03:00 PM UTC by Masamichi Hosoda
Last Updated: Mon Jun 06, 2016 01:26 PM UTC
Owner: Masamichi Hosoda

If I understand correctly, this caused by FreeType 2.5.5 or earlier.

For example, if you use a non-Japanese (e.g. Chinese or Korean) font in NotoSansCJK.ttc ver. 1.004, FreeType 2.5.5 gets a Japanese postscript name.

Therefore, LilyPond might embed the fonts with wrong postscript name if you use FreeType 2.5.5 or earlier.
Even if the name is wrong, the glyphs are correct.

FreeType 2.6+ is fixed it.

For LilyPond official site's binaries:
Current GUB uses FreeType 2.4.12.
So I'm making the GUB's patch which update FreeType.

For others:
Bump up required or recommended version of FreeType?

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