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From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: Emacs developers <emacs-devel@gnu.org>
Subject: Are floating point numbers ok in version-regexp-alist?
Date: Wed, 15 Mar 2017 18:43:21 -0400	[thread overview]
Message-ID: <51d6ba6a-f16b-30a3-c735-3c2165155ba4@gmail.com> (raw)

Hi emacs-devel,

I need to compare debian-like version numbers, in which 1.0 < 1.0dev < 1.1:

$ dpkg --compare-versions 1.0 lt 1.0dev; echo $?
0
$ dpkg --compare-versions 1.0dev lt 1.1; echo $?
0

My instinct would be to write this:

(let ((version-regexp-alist `(("dev" . 0.5) ,@version-regexp-alist)))
  (and (version< "1.0" "1.0dev")
       (version< "1.0dev" "1.0.1")))

Is it ok to use floating point numbers in version-regexp-alist?  Otherwise, do we have a facility to parse Debian version numbers in Emacs?

Thanks!
Clément.



                 reply	other threads:[~2017-03-15 22:43 UTC|newest]

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