Changes (by Roland Haas):

status:

wontfix (was new)

Comment (by Roland Haas):

Expanding variables inside of double quoted strings is allowed by the current docs and already happened in the past. A workaround to add "$" to strings is available.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2333/piraha-expands-variables-inside-of-strings