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Re: Can no longer assign to LINENO in bash3


From: Chet Ramey
Subject: Re: Can no longer assign to LINENO in bash3
Date: Sat, 01 Jan 2005 21:13:20 -0500
User-agent: Mozilla Thunderbird 0.9 (Windows/20041103)

address@hidden wrote:
Configuration Information [Automatically generated, do not change]:
Machine: i386
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H  -I.  -I../bash -I../bash/include -I../bash/lib   -g -O2
uname output: Linux lea 2.6.9-1-k7 #1 Wed Dec 15 19:12:42 GMT 2004 i686 
GNU/Linux
Machine Type: i386-pc-linux-gnu

Bash Version: 3.0
Patch Level: 16
Release Status: release

Description:

I execute the following script from the prompt, $ . tt.sh

    echo $LINENO
    LINENO=11
    echo $LINENO

When I run it on bash 2.05b I get exactly what I would expect:

    1
    12

But when I trun it on bash 3.0, I get:

    1
    3

Bash version 3 is much more accurate in its line number reporting.  When
in a script, the value of LINENO is set from the line number saved while
parsing the script, rather than simply adding one or two to the last
value.

Chet




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