RE: [EXTERNAL] Re: Problem with flagging font as 'tricky'

[Justyna Wawrzynska]

Hi Werner,

Thank you for quick response. To be more precise, my case is PDLCJH+OCR-A font. 
This is incremental font build of OCR-A font. Free type flags it as tricky. 

BR,

Justyna

-----Original Message-----
From: suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> 
Sent: Friday, February 12, 2021 2:06 AM
To: Werner LEMBERG <wl@gnu.org>; Justyna Wawrzynska 
<justyna.wawrzynska@bluecrestinc.com>; Roy Tam <roytam@gmail.com>
Cc: freetype-devel@nongnu.org
Subject: [EXTERNAL] Re: Problem with flagging font as 'tricky'

Dear Werner, Justyna and Roy,

"DLC" was introduced by the request from Mr. Roy Tam,

https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fgitlab.freedesktop.org%2Ffreetype%2Ffreetype%2F-%2Fcommit%2F0ed9fef032641c30d0398d98a01b69eca1c15224__%3B!!GXa4NB5MBjHR!GhS45UM8ehm31_wdZY6W6qbgdu5gKwZRk5MJ738vZwccn05k2yyj_H-xn3c1sjyGMskkFKv2UNMC%24&amp;data=04%7C01%7Cjustyna.wawrzynska%40bluecrestinc.com%7C7cda724ec08348f84e2b08d8cef26873%7C8310f036fe8d4702a1e0177e9320227c%7C0%7C0%7C637486887837571500%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=gnyl5InB9EGayRRkEtGJHTH3h1GFVohpDlEuqXtULQ8%3D&amp;reserved=0
 

The assumed font file*s* were dlctt-m7.ttf and dftt-f5.ttf. Revisiting the 
changeset, using "DLC" prefix in the deny list is slightly too greedy idea to 
catch all Dynalab fonts, I feel. Also it could be slightly odd to understand 
the situation as "2 different fonts produced by same company have same family 
name", because it means that the customer cannot use these 2 fonts at the same 
time. Mr. Roy, do you have more detailed info to identify the fonts precisely?

Regards,
mpsuzuki

On 2021/02/12 1:44, Werner LEMBERG wrote:
> 
> Hello Justyna,
> 
> 
>> Before flagging the font as 'tricky' you are checking its name and 
>> comparing it with the trick_names table defined in ttobjs.c file.
>> This causes that some fonts which aren't tricky are also flagged and 
>> as a result we can't use autohinting on it.
> 
> What names are you talking about?
> 
>> The main problem cause the fonts having prefixes in its names (like 
>> incremental fonts) and "DLC" in the trick_names table.  Is there any 
>> chance to change this method or even change the "DLC" to "DLCMing"
>> and "DLCFong"?
> 
> Certainly.  The more details you give on the font names you are going 
> to use (or which are already used by you), the finer we can adjust the 
> filter.
> 
> 
>      Werner
> 

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