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Re: Cairo plans

From: Masamichi Hosoda
Subject: Re: Cairo plans
Date: Sat, 04 Sep 2021 20:14:15 +0900 (JST)

> I analyzed more closely in the issue
> Would you know how the mapping of character index => codepoint is
> supposed to work for this font with character 3056 (辻) ?

Most PDF readers have a mapping
from Adobe-Japan1 CID to Unicode code points as follows.

In the case of Acrobat Reader on Windows, it is stored in the following path.
C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\CMap\Adobe-Japan1-UCS2

The number 3056 in the Adobe-Japan1 CID is 0xbf0 in hexadecimal.
The Adobe-Japan1-UCS2 file contains the following line,
which shows that CID 0xbf0 is U+8FBB.

<0bf0> <8fbb>

In the case of poppler, the file format is different,
but the following file has a similar mapping.

There is a Unicode code point at line 3056 + 1 (i.e. line 3057),
which shows U+8FBB.

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