Re: 'eval' exit behaviour in posix mode

From	Chet Ramey <chet.ramey@case.edu>
Newsgroups	gnu.bash.bug
Subject	Re: 'eval' exit behaviour in posix mode
Date	2018-12-26 11:26 -0500
Organization	ITS, Case Western Reserve University
Message-ID	<mailman.6315.1545841575.1284.bug-bash@gnu.org> (permalink)
References	<dbf54249-2563-0258-3e91-2e7b314c8fb7@inlv.org> <229b496f-7fce-a270-b4e3-85dc10b662af@case.edu> <b644b364-3c3f-81df-28f3-d1e4caa25b47@inlv.org>

Show all headers | View raw

On 12/23/18 7:42 PM, Martijn Dekker wrote:
> Op 14-12-18 om 14:29 schreef Chet Ramey:
>> On 12/14/18 6:46 AM, Martijn Dekker wrote:
>>> In current git, 'bash -o posix' no longer exits the shell on a syntax error
>>> in the argument to the special builtin 'eval'. Bash 4.2-4.4 exit as POSIX
>>> specifies.
>>
>> Well, not quite. It's the specific case of an unexpected end of file. ksh93
>> doesn't exit, either, but it's probably the right thing to do, and the
>> right thing for backwards compatibility.
> 
> But now it exits on an unexpected EOF (or other syntax error) in 'command
> eval' as well, which it shouldn't.

Yes, that's true in posix mode. Interestingly, no other shell I tested
(quickly) honors the special status of the command builtin here.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

Back to gnu.bash.bug | Previous | Next | Find similar | Unroll thread

Thread

Re: 'eval' exit behaviour in posix mode Chet Ramey <chet.ramey@case.edu> - 2018-12-26 11:26 -0500

csiph-web