bug#55163: 29.0.50; master 4a1f69ebca (TICKS . HZ) for current-time broke lsp-mode

[Paul Eggert]

On 4/30/22 02:15, Lars Ingebrigtsen wrote:
> > * (clock-realtime) returns the system-wide clock. It acts like
> >    (time-convert nil t), i.e., like (current-time) but returning (TICKS
> >    . HZ) form.
> clock- as a prefix does make a lot of sense, but I think I'd interpret
> that as "realtime" as something having to do with scheduling

Yes, "realtime" is an unfortunate phrase here, even if it's POSIX. 
Perhaps we should use "universal" instead, since it's Universal Time.

Another thought is that instead of a new Lisp function, we could extend 
current-time. E.g., (current-time 'universal) would return the current 
time in seconds since the EPOCH, (current-time 'process-cpu) the 
process's CPU time, (current-time 'monotonic) a monotonic clock, etc. 
Although this wouldn't let us reorganize the time API in a major way, it 
would let us add the needed functionality in a way that follows existing 
practice pretty closely, and there's benefit to that.