Fixed flaw in :key_value rule

[88Alex]

I edited the rule(:key_value) so spaces are not required before and after the =.
This way, key=3 would pass.

[bootstraponline]

👍 toml-lang/toml#180

[samsonjs]

I ran this code and it doesn't seem to work. I added a test case at https://github.com/samsonjs/toml/commit/865f07f839f857fd0a59a817a532623e0a4e3147.

You'll have to at least make keys not parse =, as right now key=what? = "foo" is valid and parses a key named key=what?. I'm not sure what else might be involved in making this work.

[samsonjs]

Not parsing = as part of the key works, but it's unclear whether this behaves according to the spec or not. Here's a branch that fixes & tests any number of spaces around keys & values: https://github.com/samsonjs/toml/tree/key-values

[88Alex]

With my modifications to the rule, key=what? = "foo" generates a parse error.

[dirk]

Quoting TOML v0.2.0 spec:

Keys start with the first non-whitespace character and end with the last non-whitespace character before the equals sign.

Therefore key=3 should be invalid (and ugly).