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From: Akim Demaille
Subject: Re: AS_EXIT
Date: 31 Oct 2000 11:51:21 +0100
User-agent: Gnus/5.0807 (Gnus v5.8.7) XEmacs/21.1 (Channel Islands)

>>>>> "Lars" == Lars J Aas <address@hidden> writes:

Lars> On Mon, Oct 30, 2000 at 05:23:07PM -0200, Alexandre Oliva wrote:
Lars> : On Oct 30, 2000, "Lars J. Aas" <address@hidden> wrote: : > How
Lars> about `true' and `false'?  : : IIRC, `true' isn't as portable as
Lars> `:'.

Lars> Is `false' more portable than `true' then?

I'm not sure there are really such systems.  And the stds then don't
care about these:

   The @code{configure} script and the Makefile rules for building and
   installation should not use any utilities directly except these:
   @c dd find
   @c gunzip gzip md5sum
   @c mkfifo mknod tee uname 
   cat cmp cp diff echo egrep expr false grep install-info
   ln ls mkdir mv pwd rm rmdir sed sleep sort tar test touch true
   @end example

(Heck, ``tee''.  I wanted to use tee in the test suite :(  )

But it's a wide belief that there are shells where `true' is not a
builtin, hence the preference for `:'.  I have no evidence this is

I believe it's more a matter of tradition.

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