using line protocol measurement names cannot contain commas

[beckettsean]

I tried to make a measurement called foo,bar. If I don't escape the comma it throws a valid parser error for a missing tag value. If I do escape the comma it silently drops the ,bar and keeps the \, turning bar into a tag with no value.

> create database mydb5
> use mydb5
Using database mydb5
> insert foo,bar value=1
ERR: unable to parse ' foo,bar value=1': missing value

> insert foo\,bar value=1
> show series
name: foo\
----------
_key        bar
foo\,bar