bug#48404: 28.0.50; "Invalid version syntax" errors with read-extended-command

[Eli Zaretskii]

> From: Tassilo Horn <tsdh@gnu.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, 48404@debbugs.gnu.org, stefan@marxist.se
> Date: Wed, 19 May 2021 13:54:22 +0200
> 
> In auctex, all our obsoletion versions are just version numbers "11.97"
> like and represent the auctex version and our bug reports show that old
> versions are still used much more often as one would expect.  So as long
> as those "normal" versions don't cause the package version be compared
> to the emacs version and just recently deprecated commands vanish from
> completion, I'm neutral.

AFAIU, they do get compared with Emacs version numbers.