Bug when create a new admin route with hyphen

[diegocpires]

Preconditions (*)

1. Magento version 2.3-develop

Steps to reproduce (*)

1. Create a new route, with hyphen in frontName. E.g.:

<route id="adminmodule" frontName="-">

    <module name="Contribution_AdminModule" />

</route>

2. Create a new menu for Admin. E.g.:

    <add
        id="Contribution_AdminModule::new_page"
        title="Treinamento Menu"
        translate="title"
        module="Contribution_AdminModule"
        sortOrder="10"
        parent="Contribution_AdminModule::admin_module"
        action="-/index"
        resource="Contribution_AdminModule::new_page"
       />

Expected result (*)

1. A new and functional rote, with hyphen in url

Actual result (*)

1. Got an exception

1 exception(s):
Exception #0 (InvalidArgumentException): Param action doesn't pass validation: '-/index' does not match against pattern '/^[A-Za-z0-9/_]+$/'

[m2-assistant]

Hi @diegocpires. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
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Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@diegocpires do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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[m2-assistant]

Hi @rodrigowebjump. Thank you for working on this issue.
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[VladimirZaets]

Hi @diegocpires. Thank you for your report.
The issue has been fixed in #25612 by @diegocpires in 2.3-develop branch
Related commit(s):

• 9898d5cc6e7dcec9eb3428d2e17a9fba014c6440
• 93dcd502a9b04c56fa46b5cc446915b4de5bf0c8
• 8327db6cb299ca3932b6e053dfb9c3da7f694170
• 4fd4e60670df5bfe960ee7ad6f9ac96ac11fdcba

The fix will be available with the upcoming 2.3.5 release.