Date: Wed, 14 Mar 2001 14:10:06 +0000 From: David Malone <dwmalone@maths.tcd.ie> To: "Andrey A. Chernov" <ache@nagual.pp.ru> Cc: Christos Zoulas <christos@zoulas.com>, tcsh-bugs@mx.gw.com, current@FreeBSD.ORG Subject: Re: tcsh 6.10.00 echo;echo;echo; bug with fix Message-ID: <200103141410.aa44559@salmon.maths.tcd.ie> In-Reply-To: Your message of "Wed, 14 Mar 2001 15:59:08 %2B0300." <20010314155908.A72442@nagual.pp.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
> Since internal 'echo' does nothing, it _not_ used in any old csh scripts, > while 'echo ""' does the same thing in both old and new variants, so old > scripts will works in the same way. Will it change what happens if you do: set null="" echo $null (this produces nothing in "traditional" tcsh and csh)? > Since old csh is not maintained anymore, we don't need to preserve exact > void compatibility with unsupported and not maintained other platforms > software with no practical reason. I guess we should leave it up to the tcsh folks. There are other internal csh commands which behave differently to external commands (nice and time come to mind). I think it is known that 'echo ""' is a relatively portable way of printing a blank line. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi? <200103141410.aa44559>