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Re: nested exec<<HERE ambiguity

From: Chet Ramey
Subject: Re: nested exec<<HERE ambiguity
Date: Wed, 29 Nov 2000 13:57:44 -0500

> Bash Version: 2.02
> Patch Level: 0
> Release Status: release
> Description:
>       When bash sources (`.') the file whose contents is given after the
>       "Repeat-By:" line, it doesn't echo a `1' like the bourne and korn
>       shells do. I'm not sure which output is correct. If the file is
>       used as a shell script, there's no visible difference.
> Repeat-By:
> exec<<a
> exec<<b
> echo 2
> b
> echo 1
> a
> echo 0

My current development version of bash and ksh93 both echo


and exit.  Bash will echo some extra stuff because readline really
wants to echo the input it reads.  I'm surprised that `1' would be
echoed at all, since the second here document essentially overwrites
the first.

``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet)

Chet Ramey, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/

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