Hi Fran,

2016-10-12 10:18 GMT+02:00 Fran Burstall <f.e.burstall@bath.ac.uk>:
> Hi Mosè,
>
> Here is such an example.
>
> I would expect auctex to parse this and write a style file to ./auto but,
> for me, it does not unless I remove the long comment at the start of the
> file.

Thank you.  I can't reproduce your problem.  For me, C-c C-n does
create the auto-generated file.  The variable `TeX-auto-parse-length'
controls the length of the buffer that is parsed.  Default value is
999999, which is much higher than the length of your file ((point-max)
== 2205).  What's the value of `TeX-auto-parse-length' for you?  issue

    C-h v TeX-auto-parse-length RET

after you load AUCTeX (for example after opening a *TeX file) to check it.

Bye,
Mosè