Detlef Steuer <steuer@hsu-hh.de> writes:

> I tried to follow your advice to improve the patch accordingly.
> New version attached.

I have amended your patch fixing some of the spelling issues and
indentation. See the attached. Note that I used "time to live"
consistently instead of "time to life". The former is the right
abbreviation meaning, AFAIU
(https://www.cloudflare.com/learning/cdn/glossary/time-to-live-ttl/)

I also have a more general comment.

The patch only allows to the TTL globally for all the calendars.
However, it would make sense to specify TTL on per-file basis. WDYT?