Multiple comma-separated function arguments

[ocervell]

Found another small issue with the following query:

histogram_quantile(0.9999,sum(irate(metric_histogram{a=~'(1|2|3)',b=~'(1|2|3)',c=~'(1|2|3)',d=~'(1|2|3)'}[1m])) by(a,b,c))

seems that multiple labels from by aggregator are not parsed properly.

[pabluk]

Hey @ocervell! thanks for the full query, I'm testing it now and I'll try to find what is happening with those labels.

[pabluk]

I figured out the issue here and I merged this fix #8.
Now, the output for that expression is formatted properly using:

pygmentize -f png -O "line_numbers=False,style=monokai" -o example.png example.promql

[pabluk]

The new release 0.0.7 is now available on PyPI https://pypi.org/project/pygments-promql/

Thanks again @ocervell for helping to improve this lexer and please don't hesitate to share any future issue.