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Re: wrong lineno inside trap?


From: Chet Ramey
Subject: Re: wrong lineno inside trap?
Date: Mon, 12 Jan 2009 10:22:52 -0500
User-agent: Thunderbird 2.0.0.19 (Macintosh/20081209)

peter360 wrote:
> I wrote a test program test.sh:
> ----------------------------------------------------
> trap '
> 
> echo this is line 3, but LINENO=$LINENO
> 
> ' 0
> 
> echo this is line 7, and LINENO=$LINENO
> ---------------------------
> when I ran it I got
> $ sh /tmp/test.sh
> this is line 7, and LINENO=7
> this is line 3, but LINENO=11
> 
> My bash version is
> $ sh --version
> GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)
> Copyright (C) 2005 Free Software Foundation, Inc.
> 
> Is this a known problem?   Thanks.

Bash-4.0 should behave better in this area, but quoted strings will
always cause unpredictable values for $LINENO.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer

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




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