Re: master d0c77a1: Remove some assumptions about timestamp format

[Michael Albinus <michael.albinus@gmx.de>]

Paul Eggert <eggert@cs.ucla.edu> writes:

> I installed the attached, which should be a win independently of what
> Tramp needs as it adds support for time-equal, infinite and NaN time
> values. I hope it's enough for Tramp too in that it can use a NaN (or
> an infinity) to represent a timestamp that a filesystem can't possibly
> have.

Thanks. Comments:

> +@defun time-equal t1 t2

Shouldn't this be `time-equal-p', as we have already `time-less-p'?

> +This returns @code{t} if @var{t1} and @var{t2} are equal time values.
> +The result is @code{nil} if either argument is a NaN.

No. Tramp (and other functions) must check, whether a given time value
is the "don't know" value. Therefore,

(time-equal time-value 0.0e+NaN)

must return t, if time-value is a NaN. And what if either value is a
float infinity?

Best regards, Michael.