Metric names might be tuples, they have to be escaped in match specs.

[kape1395]

If an entry name has tuples and a custom entry type is used, the tuples are used as part of the match-spec. They must be escaped.

[uwiger]

Good catch (although the comment to exometer_admin:set_default() says the name should be a list of atoms).

I suggest adding a test case. Here is an example you may use:
https://github.com/Feuerlabs/exometer_core/tree/uw-fix_name_tuples-add-test

[kape1395]

Thanks for the test case. I have merged it into the PR.

[uwiger]

Thanks - merged.

[uwiger]

Tagged as 1.7.0 and published to hex