Date: Tue, 15 Sep 1998 10:31:44 -0700 From: Joe Moss <jmoss@ichips.intel.com> To: Martin Cracauer <cracauer@cons.org> Cc: chet@po.cwru.edu, crossd@cs.rpi.edu, freebsd-current@FreeBSD.ORG Subject: Re: 'bug' in /bin/sh's builtin 'echo' Message-ID: <199809151731.KAA18379@pdxss086> In-Reply-To: Your message of "Tue, 15 Sep 1998 17:57:55 %2B0200." <19980915175755.A6907@cons.org>
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> In <980915154036.AA11163.SM@nike.ins.cwru.edu>, Chet Ramey wrote: > > > Also, what happens if \c isn't at the end of the string? The -n > > > construct seems superiour to me. > > > > Everything after the \c should be ignored. > > > > > Anyway, please file a PR about this. I'll take care of it when my > > > Posix documents arrive, which should be in time for the 3.0 release. > > > > POSIX.2 says very little about `echo'; it recommends using printf(1) > > instead. It defines nothing, and allows everything. Specifically, > > arguments which contain a backslash, or a first argument of `-n', > > are `implementation defined'. > > I was afraid that would be the case. So much for wasting money on > standard documents :-) You just have to pick the right standards :-) "The Single UNIX Specification, Version 2" does talk about echo and '\c' vs. '-n'. See http://www.opengroup.org/onlinepubs/7908799/xcu/echo.html > > We obviously should unify /bin/sh's echo and /bin/echo. I vote to > unify on displaying \c verbatim when -e isn't set, for the reasons I > stated in my previous mail. > > Since bash doesn't recognize \c as special without -e either, I think > compatiblity to other platforms is equivalent (bad) for both > solutions. If anything, I would rate Linux compatiblity to be > slightly more important since we run Linux binaries as well. > > Martin > -- > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% > Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer > Tel.: (private) +4940 5221829 Fax.: (private) +4940 5228536 > Paper: (private) Waldstrasse 200, 22846 Norderstedt, Germany > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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