Emmet does not create BEM grandparent class with 2 hyphens

[aykut-rocks]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.77.2
• OS Version: macOS 13.2.1

Steps to Reproduce:

in this closed issue #37520
you say that

.grandparent>.parent>.--child|bem

creates

<div class="grandparent">
        <div class="parent">
            <div class="grandparent__child"></div>
        </div>
 </div>

but it creates only parent__child

<div class="grandparent">
        <div class="parent">
            <div class="parent__child"></div>
        </div>
    </div>

only if i write the hyphen 3 times

.grandparent>.parent>.---child|bem

then i got the expected

<div class="grandparent">
        <div class="parent">
            <div class="grandparent__child"></div>
        </div>
    </div>

this is my configuration file:
"emmet.syntaxProfiles": {
"html" : {
"filters": "bem"
}
},
"emmet.preferences": {
"bem.elementSeparator": "__",
"bem.modifierSeparator": "--",
"bem.shortElementPrefix": "-"
},
"emmet.triggerExpansionOnTab": true

[rzhao271]

That behaviour seems to be by design with the current version of Emmet.
Here's an example of where - gets the parent but --- gets the grandparent:

https://github.com/emmetio/emmet/blob/691b09056831c3960591429684186460864c7e06/test/markup.ts#L55

Also, shortElementPrefix isn't supported in the current version of Emmet.

@sergeche I'd like to confirm that the current behaviour is by design?

[sergeche]

Yes, this is the expected behaviour. When you write in BEM mode, the class names prefixed with - or _ will be transformed into block-element or block_modifier notation. And the amount of prefixes is used to “climb up” the abbreviation tree to get desired block name, starting from current node. E.g. - takes block name from current node, -- from it’s parent, --- from parent’s parent and so on.

[vscodenpa]

The described behavior is how it is expected to work. If you disagree, please explain what is expected and what is not in more detail. See also our issue reporting guidelines.

Happy Coding!