Re: Can no longer assign to LINENO in bash3

[Chet Ramey]

bronson@rinspin.com 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