According to the specification section 2.3:
The first character of an identifier MUST NOT be 0 or 1.
The first identifier character MAY be a letter A-Z or a-z, a decimal digit 2-9, or one of /, $, %, &, _, +, |, or ?. Subsequent identifier characters MAY additionally include the digits 0 and 1. This permissive ASCII-only character set preserves an unambiguous distinction between identifiers and numeric literals, which MUST begin with a 0-prefixed base marker.
However, numeric literals cannot start with 1 since the shift to based INT and FLT in version 0.6.0.
To reflect this, allow 1 at any point in an identifier.
Update the implementation, specification, tests, and stdlib.
According to the specification section 2.3:
However, numeric literals cannot start with
1since the shift to basedINTandFLTin version 0.6.0.To reflect this, allow
1at any point in an identifier.Update the implementation, specification, tests, and stdlib.