When highlighting the control block structure within an ERB file, if there is a block defining word used as a method argument keyword inside the block, it will match the end statement with that keyword instead of the control block.

With a class: argument in a method call (with or without parentheses):

Without the class: keyword, it works fine:

Calling class= as an HTML attribute is fine:

Within a normal Ruby .rb file, this does not occur: