PatternTemplate.pattern() could accept some modifiers

[danon]

That way, we could build regular expressions with in-pattern flags.

Pattern::template("return @();")->pattern('strlen', 'i');

That would match

return strlen();
return strLen();
return STRLEN();

but not

RETURN strlen();

because return is being matched by the case-sensitive pattern.

[danon]

It should probably only add them if they differ, and it should ignore order.