Graphite: Query editor/parser failed when metric expressions starts with curly brace segment

[time-less-ness]

I am defining a query. I need a "complex" server list:

aliasByNode(scaleToSeconds(nonNegativeDerivative({busintel_,statlog_}.mysql.Bytes.received,0),1),0)

That is, I need all servers starting with busintel or statlog in my list. When I define this, the graph does update with all those servers as I requested, but I get an error in the Grafana UI:
"Expecting closing paranthesis[sic], got {"

Two things, first, fix the spelling:
http://en.wiktionary.org/wiki/parenthesis#English

Second, I suspect the UI shouldn't flag this as an error, especially given Graphite returns a legitimate graph for the query.

[time-less-ness]

Just saw Issue #518. This looks like it's the same root cause, but there isn't a simple workaround this time, I don't think?