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Add a warning about our poor CID support #3955

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merged 1 commit into from Oct 2, 2019

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ctrlcctrlv
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@ctrlcctrlv ctrlcctrlv commented Sep 26, 2019

The memory warning really is not applicable in 2019, the numerous crashes are much more serious.

Happily, flattening CID fonts never seems to fail—I ran it on hundreds of CID fonts and have not gotten any crashes. So just recommend that instead. Fixing the actual problem would take a long time and I doubt it would have any benefit over just flattening the CID fonts—that's my opinion after experimenting with this for a week or so.

(Note: This is a documentation-only change.)

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ctrlcctrlv commented Jun 9, 2020

This is as good a place as any to note this I think.
この事実を書き留めるここでいいと思う。

Today I had a chat with @mandel59 (Ryuusei), mostly in Japanese, about this subject.
今日、この話題についてmandel59(竜星)さんと、(主に日本語で)話をした。

We came to the conclusion that CID fonts are a legacy format. "Sfnt-wrapped" CID fonts also.
CIDフォントは、レガシーフォーマットであることは同意。SFNT形CIDフォントも。

halt, valt, hwid, etc. are to be used instead for new fonts.
新しいフォントには、「halt」、「valt」、「hwid」などが使用することおすすめです。

My advice to flatten them if using them as a base for a new font is sound.
既存のCIDフォントから新しいフォントを作る、「flatten」の勧告は健全です。

Please take note @jtanx, @skef, and anyone else who is interested.
@jtanx@skefなど読んでください。

Thank you once again for your time @mandel59 👍
mandel59さんありがとうございました(^人^)感謝

I was very concerned about this for a while. I was waiting for someone who actually makes CJK fonts to weigh in.
しばらく心配してました。 CJKフォントを作っている人の意見を待っていました。

Other sources:
https://blogs.adobe.com/CCJKType/files/2018/12/cjkv2e-pp387-393.pdf (esp. p. 392)
https://blogs.adobe.com/CCJKType/2018/12/farewell-cidfonts.html

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Added above as #D6, mostly so I had an excuse to write a script to add section links and a table of contents...

As a wise man once said, "Never spend 6 minutes doing something by hand when you can spend 6 hours failing to automate it." (Not that 30 minutes is 6 hours.)

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