Escape quotes bug

[7iomka]

Example from docs with same quote interpolation

div(placeholder="{{ 'I\'m best of the best' | translate }}")

get me error

Trace: SyntaxError: Unexpected token, when trying to parse `{{ 'I'm best of the best' | translate }}`

I would like to know why I am getting errorsfor this case.
Thanks

PS: I think solution, but problem from above is a bug.

My solution:

1. Excape self-made

placeholder="{{ "I'm best of the best" | translate }}"

2. Auto escape by pug

placeholder=`{{ "I\'m best of the best" | translate }}`

BUT
My solution not working as needed if we have 2 types of quotes

placeholder=`{{ "I\'m best of the \"best\"" | translate }}`

That extract

msgid "I'm best of the "best""

instead of

msgid "I'm best of the \"best\""

How to fix this issues?
Thanks!

[7iomka]

My tests for translate attributes in pug

• default (with escape enabled (=)) Works FINE

div(content= `{{ "${meta.description}" | t }}`)

• default (with escape disabled (!=)) THIS CAUSE ALWAYS WRONG output

div(content!= `{{ "${meta.description}" | t }}`)

If variable contains interpolated SINGLE quotes '
Code below will throw

  SyntaxError: Unexpected token, when trying to parse `{{ 'te434343x'st' | t }}`

div(content=`{{ '${meta.description}' | t }}`)
div(content!=`{{ '${meta.description}' | t }}`)

If we use for code above DOUBLE quotes, error will disappear, but extraction output will be WRONG with unescaped output(!=).

div(content!=`{{ "${meta.description}" | t }}`)

Recap: If string has interpolated single quotes('), SyntaxError will occur for both (unescaped & escaped) assignments, if that wrapped also in a SINGLE quote!
USE double quote with escaped mode (=);

div(content= `{{ "${meta.description}" | t }}`)