[TYPO3-50-general] Package Key Guidelines

Xavier Perseguers typo3 at perseguers.ch
Mon May 5 12:24:28 CEST 2008


>> ^[A-Z][a-zA-Z0-9_]*$
> Whoops, you are right, I already implemented it like this, but forgot to 
> add the * here :-)
>> But this RegEx matches faulty package keys like
>> "F3_____foo"
> That's true. I am not even sure if we really allow underscores? That's 
> why I asked here.

I do not know why you wish to change the specification from the 4.x 
branch but the spec (http://typo3.org/extensions/extension-keys/) has 
some good points I think:

* Avoid underscores
* All in lowercase

I would add that number should not be allowed alone but only together 
with at least a letter. Thus I would say something like


would be a starting point

 > a good testing facility for RegEx can be found here:
 > http://www.regex-tester.de/regex.html

This tool is easier to use I think: 

Xavier Perseguers


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