[ic] Bug in "EITHER" coretag

Stefan Hornburg (Racke) racke at linuxia.de
Fri Mar 9 18:17:07 EST 2007

Peter wrote:
> On 03/09/2007 11:26 AM, Stefan Hornburg wrote:
>> Carl Bailey wrote:
>>> We found what we believe to be a fault in the [either] coretag.
>>> We used the following code on a page:
>>>    [either][cgi idxnum][or]0[/either]
>>> When the cgi value is absent this tag returns nothing -- a null
>>> string, rather than the desired '0' character.
>>> The reason for this is that the either coretag splits its body on
>>> "[or]" and interpolates each chunk in turn, removes leading and
>>> trailing spaces from the result and returns the first "true" result. 
>>> However in determining what to return, it uses the statement "return
>>> $result if $result;"  Obviously when $result = '0', this fails to
>>> return anything.  
>> Therefore the last statement in the tag should be:
>> return $result if $result =~ /\S/;
> So what if the first result is "0"?  it would still return it.

I said the last statement in the tag, not the return within the loop.

> And I don't think this addresses the problem that was originally stated
> either.
> return $result if $result is the right way to do it, but there needs to
> be a way to return the last result in the loop if all tests fail.

See above.


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