Re: 'case' pattern matching bug with bracket expressions

[Chet Ramey <chet.ramey@xxxxxxxx>]

On 5/14/15 1:43 PM, Peter Stephenson wrote:

> This is hairy because you're relying on whitespace performing word
> splitting in a case where you don't need whitespace according to the
> grammar anyway, i.e. if you have the valid expression
> 
> case abc in (["$empty"]|[!a-z]*) echo yes ;; (*) echo no ;; esac
> 
> it can only be parsed the way zsh parses it --- you'll find bash does
> the same.

The `|' delimits the token; `["$empty"]' is a single WORD.  Both shells
effectively parse this the same way.

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