[mpeg-OTspec] post table recommendations: a question and a proposal

[John H. Jenkins]

Well, except that I'd substitute "should" for "must" in #2.  We don't want people to start flagging fonts as invalid if they have "invalid" names, because too many fonts do that.  (In particular, Apple fonts tend to use ".null" for the name of GID 1.)

If I'm reading the first note correctly, it means, "Don't use formats 1 or 2.5," but I could be wrong.

On 2013年7月2日, at 下午5:02, Bob Hallissy <bobh528 at yahoo.com> wrote:

> 
> 
> So....
> No one else knows what the first NOTE means, and
> Everyone likes my proposed wording for the second NOTE.
> ??
> Bob
> 
> On 2013-06-28 at 19:16 Bob Hallissy wrote:
>> In Section 7 Recommendations for OFF fonts there are these notes regarding the 'post' table:
>> 
>>> NOTE          Names for all glyphs must be supplied as it cannot be assumed that all Windows platforms will support the default names supplied on the Macintosh.
>>> 
>>> NOTE          The PostScript glyph name must only include uppercase or lowercase English letters, European digits, the period or the underscore, i.e. from the set [A-Za-z0-9_.] and should start with a letter, except the special glyph name ".notdef" which starts with a period.
>>> 
>> 
>> I am not sure what the first NOTE means. Two questions:
>> Does it apply only to OFF fonts containing TrueType outlines (since we've already been told CFF flavored fonts use Version 3 post table)?
>> Does it mean simply that the Version 3 post table should not be used (except for CFF fonts), or does it mean that the post table must be version 2 AND that name indices between 0 and 257, referring to Macintosh names, should not be used? 
>> I'd like to propose we make the text clear, but as I don't understand it myself I'm not sure what text to suggest.
>> 
>> Regarding the second NOTE, it would be good to include the fact that names should be no longer than 31 characters (as mentioned in the AGL specification along with the character set limitation). To that end I propose this change:
>> 
>>> The PostScript glyph name must be no longer than 31 characters, only include onlyuppercase or lowercase English letters, European digits, the period or the underscore, i.e. from the set [A-Za-z0-9_.] and should start with a letter, except the special glyph name ".notdef" which starts with a period.
>> 
>> Bob
>> 
> 
> 
> 
> 

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