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[sr #110417] Do not generate a back up file when running autoreconf

From: anonymous
Subject: [sr #110417] Do not generate a back up file when running autoreconf
Date: Tue, 5 Jan 2021 07:35:48 -0500 (EST)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0


                 Summary: Do not generate a back up file when running
                 Project: Autoconf
            Submitted by: None
            Submitted on: Tue 05 Jan 2021 12:35:46 PM UTC
                Category: None
                Priority: 5 - Normal
                Severity: 1 - Wish
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: nuquaquaraqua@gmail.com
             Open/Closed: Open
         Discussion Lock: Any
        Operating System: None



Moving from autoconf v2.69 to v2.70, autoconf started to generate back-up
files of the configure script by appending a tilde ~. Give the opportunity to
the user to disable this behaviour, that is, do never generate a configure~.

The following is the response from Zack Weinberg to this request in the
mailing list on 04/Jan/2021: 

> It is not currently possible to disable this.  (The offending code is
> `sub update_file` in $prefix/share/autoconf/Autom4te/FileUtils.pm; if
> you look at it, you will see that the suffix used for the backup file
> can be changed with the $SIMPLE_BACKUP_SUFFIX environment variable,
> but there isn't any way to tell it not to create the backup at all.)

> Because FileUtils.pm is shared with Automake, changes require
> coordination between the two projects and take even longer than
> normal.  Would you please file an issue for this feature request,
> using https://savannah.gnu.org/support/?func=additem&group=autoconf
> (you may need to create an account) so we don't forget about it?


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