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https://issues.apache.org/jira/browse/MNG-7052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17280659#comment-17280659
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Tibor Digana commented on MNG-7052:
-----------------------------------
[~mthmulders]
I guess we are intelligent people and we do not imply restrictions where not
neessary!
Why such regex? We are talking about the plus at the position zero:
{{else if ( token.charAt( 0 ) == '+' )}}
There is no reason to be restrictive at every position...
We are able to imply restrictions at the first character other than elsewhere.
> Do not allow symbols as first character of identifiers in the POM
> -----------------------------------------------------------------
>
> Key: MNG-7052
> URL: https://issues.apache.org/jira/browse/MNG-7052
> Project: Maven
> Issue Type: Improvement
> Components: core
> Reporter: Martin Kanters
> Priority: Major
> Labels: up-for-grabs
> Fix For: 4.0.x-candidate
>
>
> In the {{DefaultModelValidator}} we currently validate identifiers against
> {{a-zA-Z0-9-_.}}
> Since Maven also allows operators to be used against an identifier, this can
> result in bugs or at least unexpected behavior for the user.
> The minus operator can be used to deactivate a certain profile, so an example
> would be:
> - A project having a profile with the id {{-id-of-profile}}
> - A Maven invocation of {{mvn <goal> -P-id-of-profile}}.
> The release of Maven 4 is a nice opportunity to restrict the first character
> of an id to be {{a-zA-Z0-9}} . The other characters may still consist of
> those symbols.
> This should apply to all identifiers that we support. The methods that need
> attention are:
> {{DefaultModelValidator#validateId}} and
> {{DefaultModelValidator#validateIdWithWildcards}}.
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