Nasty filter bug

[Brian Milby]

Not sure this is really a bug.  The default is to match a wildcardPattern.  If you want to match [ then you must use [[] in the pattern.

Brian Milby
brian at milby7.com

> On Jan 23, 2024, at 9:02 PM, Neville Smythe via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Try this in the msg box:
> 
> put "aaa[bbb" into tStr; put line 1 of tStr into tLine; filter tStr without tLine; put tStr
> I get (using MacOS, LC 9.6.11)
> 
> aaa[bbb
> 
> That is to say, the line is not filtered out.
> 
> And:
> 
> put "aaa[bbb" into tStr; filter tStr with tStr; put tStr
> 
> produces an empty string instead of the original string.
> 
> The bug occurs if the line contains the character “[“ anywhere; any lines containing that character are ignored by both filter with and filter without.
> 
> This is really serious, because I rely on the filter command a lot, as I would think do many other developers!
> 
> Don’t know if it occurs with other characters, but I have never seen it before. I discovered it when filtering lines with regular expressions. Other special regexp characters I have tested do not trigger the bug.
> 
> Neville Smythe
> 
> 
> 
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