On 5/2/17 12:41 AM, Eduardo Bustamante wrote:
> On Mon, Apr 24, 2017 at 3:48 PM, Chet Ramey <chet.ra...@case.edu> wrote:
> [...]
>> That works on Linux, but not on the BSDs, since Posix says it doesn't
>> have to.
>
> I see that a test for this has been added to comsub.tests:
>
> dualbus@debian:~/src/gnu/bash$ git log -1 -p -- tests/comsub.tests
> commit 2a39157723ffb7dfc597dfa46b5b6fbd93cc9ea2
> Author: Chet Ramey <chet.ra...@case.edu>
> Date: Mon May 1 15:46:46 2017 -0400
>
> commit bash-20170428 snapshot
>
> diff --git a/tests/comsub.tests b/tests/comsub.tests
> index e8fab711..fceea00f 100644
> --- a/tests/comsub.tests
> +++ b/tests/comsub.tests
> @@ -44,6 +44,12 @@ bar')
> # long-standing parse error in all versions up through bash-4.3
> echo ${foo:-$(echo a{b,c})} >/dev/null
>
> +# parsing problem based on recursively calling bison parser through bash-4.4
> +for (( INDEX=0; INDEX<$((10-$(expr length $V_NAME))); INDEX++ ))
> +do
> + :
> +done
> +
> ${THIS_SH} ./comsub1.sub
> ${THIS_SH} ./comsub2.sub
> ${THIS_SH} ./comsub3.sub
>
>
> But in my system (Debian 9, expr from GNU coreutils 8.26-3):
>
> dualbus@debian:~/src/gnu/bash$ expr length
> expr: syntax error
Changing `expr' to `echo' is enough.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
