Re: master 4a1f69ebca 2/2: Use (TICKS . HZ) for current-time etc.

[Max Nikulin]

On 29/04/2022 05:27, Paul Eggert wrote:
> On 4/27/22 09:55, Stefan Monnier wrote:
> > Instead of rounding the times to whole seconds, wouldn't it make more
> > sense to check that the difference is larger than 1s?
>
> org-file-newer-than-p is intended to work on filesystems like HFS+ that 
> store just the seconds part of the last-modified time.

I have found just 2 calls of `org-file-newer-than-p' in the Org code and 
in both cases the intention is to check whether particular file has been 
updated. I have not checked Org extensions for usage of this function. I 
would rather assume that the code was written without any considerations 
concerning filesystem timestamps precision and its difference from 
`current-time' representation. It was still working in most real-life cases.

From my point of view, it is better to rewrite `org-compile-time' to 
treat the case when there were no file prior to the call as that the 
file has been updated without comparison of timestamps, so 
`current-time' can be dropped to eliminate comparison of timestamp from 
different sources. With such modification it is better to compare file 
timestamps without truncation to whole seconds, however I have not tried 
to create an example where fractional seconds may change behavior.