GNU bug report logs - #32252
[PATCH] %o and %x now format signed numbers

Previous Next

Full log

View this message in rfc822 format

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Drew Adams <drew.adams <at> oracle.com>, 32252 <at> debbugs.gnu.org
Subject: bug#32252: [PATCH] %o and %x now format signed numbers
Date: Mon, 23 Jul 2018 19:04:48 -0700

Drew Adams wrote:
> Put that motivation in NEWS.  Users deserve to be told why
> things change incompatibly.

OK, here's a revised NEWS entry. It also mentions avoiding read/print 
misbehavior, a more-immediate prompt for this change that I forgot to mention 
previously.

** Numbers formatted via %o or %x are now formatted as signed integers.
Formerly they were formatted using machine-dependent two's complement
representations.  The new behavior is machine-independent, avoids
misbehavior in calls like (read (format "#x%x" -1)), and is more
compatible with bignums, a planned feature.  To get the old behavior,
set the new, experimental variable binary-as-unsigned to t and please
email 32252 <at> debbugs.gnu.org if you need that.  Because %o and %x now
format signed integers, they now support the + and space flags.
(Bug#32252).

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.