powertag reference_id is not splitting on "$" character for blend operations

[jywarren]

Please describe your problem in detail, including:

What happened before you saw the error

I was trying to blend spectrum https://spectralworkbench.org/spectrums/83393 (A1) with https://spectralworkbench.org/spectrums/5199 (A2) with the following expression:

A1/A2

But this generates the path .../latest_snapshot/12345$A1/A2. The character / messes up the Rails routing system.

The real issue here is that we should ensure that the URL is being generated by splitting on the $ character just as it ought to on the # character.

Writing a test and fix for this now.