Max Wash b0cbe42fc4 lang: lex: add support for kebab-case identifiers and negative numbers ...

identifiers can now contain hyphens, with the following restrictions:
 * an identifier cannot start or end with a hyphen.
 * an identifier cannot contain more than one hyphen in a row.

kebab-case identifiers can be used for type and variable names, as well
as message identifiers and labels.

to avoid ambiguity, the lexer now enforces whitespace around most binary
operators (with a few exceptions, such as semicolons). trying to
compile a "compact" arithmetic expression, such as

	y=1+2

will now result in a "missing whitespace" error.

2025-11-07 09:49:29 +00:00

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