[BUG] Invalid identifier allowed as record field name #267
Description
Expected behavior
To align with Query Editor's behavior, in [1.=true], "1." should be rejected as an invalid identifier.
Actual behavior
The parser (as tested in VSCode using the Power Query / M Language extension) accepts the above as valid M.
Additional context
https://github.com/MicrosoftDocs/powerquery-docs/issues/30 discusses the grammar for a generalized identifier.