[tex-live] TL expl3 update broke a mwe for me

[Joseph Wright]

On 03/01/2016 16:53, Scott Kostyshak wrote:
> On Sun, Jan 03, 2016 at 08:10:24AM +0000, Joseph Wright wrote:
>> On 03/01/2016 08:02, Ingo Krabbe wrote:
>>>
>>> There it is: When luatex reads CaseFolding it fails to read over a UTF-8 Sequence in a comment!
>>>
>>> There are two errors. 1st, the luatex parser should not try to read "control sequences" in comments, should it? 2nd, a file that contains ASCII representations of unicode characters should onl have comments in the 7bit ascii range.
>>>
>>> Replace line 20 of CaseFolding.txt with 
>>>
>>> 	# full case foldings are superior: for example, they allow "MASSE" and "Ma(sharp s)e" to match.
>>>
>>> for example and the luatex error is gone.
>>>
>>> regards,
>>>
>>> ingo
>>
>> I'll take a look at this. I guess I'll have to add a defensive test in
>> case users have picked an encoding other than UTF-8. (For the present,
>> loading luainputenc after tcolorbox, or rather expl3, will solve the
>> problem.)
>>
>> (Ideally, I'd not use encodings other than UTF-8 with LuaTeX: the docs
>> must be new so there's no real reason to use others. However, this I
>> guess must be supported.)
> 
> I don't understand (I have little knowledge in this area). Are you
> suggesting a make a change to my system? From what I see, I do have
> UTF-8 set:

I'm suggesting its odd to use LuaTeX with a latin9 file, which is what
you've told luainputenc you are using. However, as I say this is an
issue that is fixable in expl3 and will be available over the next day
or so.

Joseph