About Routing Regular Expression Patterns

[s-ohnishi]

I don't understand well, so please someone tell me.

In Route.zep, "/:action" is replaced with "/([\\w0-9\\_\\-]+)" and used as a regular expression pattern.
In Router.zep, "#^/([\\w0-9\\_\\-]+)/([\\w0-9\\.\\_]+)(/.*)*$ #u" is set as default.
And in the manual (maybe it's not v5 official yet) the safe pattern is /([a-zA-Z0-9\_\-]+).
(Note: Most characters within a PHP character class have no meaning, so I don't think you need to escape either the _ or the last character in the character class -.)

Maybe the regex in Zephir is different than in PHP, but isn't \w generally equivalent to a-zA-Z0-9_ ?
Why are 0-9 and _ duplicated?
And why does Router.zep include . and not - in the action part registered as the default pattern?
Why isn't it standardized across Phalcon?

Also, the controller is auto-replaced with PascalCase(="upper"camelCase), but no action is processed.
I think it's causing trouble for it to accept . _ as the default pattern.
(So, the above "standardized " is problematic)