Re: obsoleting two time zone abbreviation variables

>>>>> On Mon, 31 Aug 2026, Paul Eggert wrote:

> --- a/doc/lispref/os.texi
> +++ b/doc/lispref/os.texi
> @@ -1547,6 +1547,8 @@ Time Zone Rules
>  second element, @var{abbr}, is a string giving a possibly-ambiguous
>  abbreviation for the time zone, e.g., @samp{"IST"} for India Standard
>  Time, Irish Standard Time, or Israel Standard Time.
> +POSIX-compatible time zone abbreviations are three to six characters
> +that are each an ASCII alphanumeric, @samp{+}, or @samp{-}.
>  Both elements can change when daylight
>  saving time begins or ends; if the user has specified a time zone that
>  does not use a seasonal time adjustment, then the value is constant

Only loosely related: This section of the manual also contains some
awkward wording like "number of seconds east of Universal Time" and
"number of seconds east of Greenwich". UTC isn't a geographic location,
so I find "east of UTC" somewhat strange.

Also, are these seconds of time or of arc? (Of course it's the former,
but usage together with "east of" introduces some ambiguity.)