Core: Fix classes being duplicated on mergeAttributes function #4320
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Please describe your changes
Before this change, the class attribute on
HTMLAttributes
would be duplicated inside themergeAttributes
function, because there was no check if a class already exists on theHTMLAttributes
string (coming from defaultOptions and inputOptions).This PR fixes this.
How did you accomplish your changes
Added a check if the className is already included inside the class attribute.
How have you tested your changes
Tested locally in the link demo with normal class and BEM class style
How can we verify your changes
See above
Checklist
Related issues
fixes #4282