Less files : Class name separator issue

[Nuranto]

Preconditions

M2.4.4
Coding standard v25

Steps to reproduce

1. Create a module
2. Add file view/css/source/_module.less with content :

/**
 * @DoNotInject
 */
.admin__menu {
    .item-mymodule.level-0 {
        & > a {
            min-height: auto;
            padding: 1rem;
            &:before {
                content: url('Namespace_Module::images/module-logo.png');
                display: block;
                height: 28px;
                margin-bottom: .5rem;
            }
        }
    }
}

3. Launch phpcs

Expected result

No errors

Actual result

4 | WARNING | CSS class names should be separated with "-" (dash)
    |         | instead of "_" (underscore)

Notes

We should either :

• remove that rule since it is not respected by M2 core code.
• Fix class names in core M2 repo, but it will be a breaking change for all existing modules
• add exceptions to that rule

[m2-assistant]

Hi @Nuranto. Thank you for your report.
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Add a comment to assign the issue: @magento I am working on this

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[hostep]

@sivaschenko: what do you think about this suggestion? I'm all for it.

If you don't want to allow underscores, then at least allow .admin__* to be used, because Magento's codebase is full of these classes.

[hostep]

@svera: what's your opinion on this?

[hostep]

@bl4de: maybe you have an opinion?

Coding standards should make code more consistent and more readable, having to add things like these doesn't make code more readable but the opposite, it makes it harder to read:

[bl4de]

Hello @hostep,

Thank you for your contribution! We will discuss this issue internally and create corresponding issue in the dev guild.
I will get back to you when I will have any update regarding your PR.

Regards,
Rafal

[hostep]

Hi @bl4de: have you guys already found some time to discuss this?

[bl4de]

Hi @hostep,

We have discussed this issue internally and decided to take a look at it. Currently we are reviewing possible solutions. I will keep you updated.
Regards,

Rafal

[hostep]

Hi @bl4de: is there already some more news? (sorry to keep bugging you but I feel like it's important to get this figured out soon, so pull requests that keep running into this silly check can soon be resolved then ...)

[hostep]

Hi @bl4de, @sivaschenko, @svera, ...: really sorry to keep bothering you guys, but is there any sort of update around this from you?

[hostep]

Hi @bl4de, @sivaschenko, @svera, ...: really sorry to keep bothering you guys, but is there any sort of update around this from you?