[mpeg-OTspec] Proposal to modify wording for name table ID 6

[Thomas Phinney]

Note: I remember a reason for 27 instead of 29 or 31. It was so we (Adobe)
could have a filename of the format "PSFontName.afm" and have it still come
out at 31 characters or less, for compatibility with Mac Classic and/or
really old versions of Windows.



On Tue, Jun 10, 2014 at 4:59 PM, Ken Lunde lunde at adobe.com [mpeg-OTspec] <
mpeg-OTspec at yahoogroups.com> wrote:

> Thomas and others,
>
> I looked into this a week or two ago. Page 14 of Adobe Tech Note #5176
> ("The Compact Font Format Specification") states the following:
>
> > For compatibility with client software, such as PostScript interpreters
> and Acrobat®, font names should be no longer than 127 characters and should
> not contain any of the following ASCII characters: [, ], (, ), {, }, <, >,
> /, %, null (NUL), space, tab, carriage return, line feed, form feed. It is
> recommended that font names be restricted to the printable ASCII subset,
> codes 33 through 126. Adobe Type Manager® (ATM®) software imposes a further
> restriction on the font name length of 63 characters.
> >
> > Note 3: For compatibility with earlier PostScript interpreters, see
> Technical Note #5088, "Font Naming Issues."
>
> The following is from page 8 of Adobe Tech Note #5088 ("Font Naming
> Issues"):
>
> > The FontName generally consists of a family name (specifically, the one
> used for FamilyName), followed by a hyphen and style attributes in the same
> order as in the FullName. For compatibility with the earliest versions of
> PostScript interpreters and with the file systems in some operating
> systems, Adobe limits the number of characters in the FontName to 29
> characters.
>
> In other words, there appears to be three length limits for the FontName
> string: 29, 63, and 127.
>
> The quoted Adobe Tech Notes can be obtained here:
>
>   http://www.adobe.com/devnet/font.html
>
> Cheers!
>
> -- Ken
>
> On Jun 10, 2014, at 4:40 PM, Thomas Phinney tphinney at cal.berkeley.edu
> [mpeg-OTspec] <mpeg-OTspec at yahoogroups.com> wrote:
>
> >
> > Yes, the 31 vs 63 thing caught me off guard as well. When did it change?
> >
> >
> > On Tue, Jun 10, 2014 at 2:53 PM, James Cloos
> cloos+mpeg-otspec at jhcloos.com [mpeg-OTspec] <mpeg-OTspec at yahoogroups.com>
> wrote:
> >
> > The simplification is good, but:
> >
> >
> >
> > > translated to ASCII, the name string must be no longer than 63
> characters
> >
> > How long have PostScript interpreters supported names longer than 31?
> >
> > Should it note that ps name used to be limited to 31?
> >
> > -JimC
> > --
> > James Cloos <cloos at jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
> >
> >
> >
> >
> > --
> > On paper books and ebooks: “Paper books are the packaging that books
> come in.”
> > —Cory Doctorow
> >
> >
>
>
>
> ------------------------------------
>
> ------------------------------------
>
> Yahoo Groups Links
>
>
>
>


-- 
On paper books and ebooks: “Paper books are the packaging that books come in
.”
—Cory Doctorow
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