Re: "mtxrun --script fonts --reload" hangs when loading "LXGWNeoXiHei.ttf"

On 3/25/2026 1:17 PM, Max Chernoff wrote:
> Hi Hans,
> 
> On Wed, 2026-03-25 at 10:18 +0100, Hans Hagen via ntg-context wrote:
>> On 3/25/2026 5:40 AM, Max Chernoff via ntg-context wrote:
>>
>>   >      otf reader      | bad 'vmtx' table in file 'LXGWNeoXiHei.ttf'
>>>
>>> Even if it's the font itself that's buggy/broken, I'd argue that ConTeXt
>>> shouldn't enter an infinite loop when trying to load it.
>>
>> It took me a while to see that you actually don't use the tex live font
>> but a broken one from ctan
> 
> It is in TL, but it was updated only a few hours ago, so unless you've
> updated very recently and your local mirror is up-to-date, you might not
> have the broken version yet.

well, i installed tl 2026 yesterday afternoon (took quite a while so i 
didn't check all the messages flying by)

> Yes, but only with XeLaTeX:
> 
>      https://github.com/myhsia/LXGW-CTAN/actions/runs/23419659711/job/68121899170

kind of useless, no info, here i get with xetex

[1
xdvipdfmx:fatal: Expecting zero

No output PDF file written.

Wondering: did someone actually look at the result file? Or is this all 
automatic.

> On Wed, 2026-03-25 at 12:17 +0100, Hans Hagen via ntg-context wrote:
>> one gets what one asks for: a font with 40K scripts
> 
> There's "only" 27k characters in the font, which is indeed rather large,
> but mostly unavoidable when 23k of them are Chinese glyphs (since
> removing letters from the alphabet probably isn't a realistic ask).

the number of glyphs is not the issue ... it's the bad feature table 
(here there should ne only a few entries in gsub; gpos is empty) ... 
there are 40K random language tags with each plenty random script tags 
totaling to 750 million combinations

>> so wiping the font from ones disk is the best one can do
> 
> In general, that's not really an option here (we can't delete random
> files from TL), but in this particular case, the file appears to be
> corrupted:
> 
>      https://github.com/myhsia/LXGW-CTAN/issues/5#issuecomment-4126020910
> 
> so I'll go ahead and revert the change in TL directly.

Good as there is no way that we can check every entry/byte/number etc 
in the otf for validity. Hopefully users are a bit conservative wrt 
updating texlive.

Hans

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