Support demangling symbols with dot-delimited words at the end

[shepmaster]

This accounts for values like LLVM IR branch labels.

Closes #15

[alexcrichton]

Nice! Could some validation also be added that everything after the E. is "symbol like" to avoid eagerly desymbolizing things that shouldn't be?

[shepmaster]

Could some validation also be added that everything after the E. is "symbol like" to avoid eagerly desymbolizing things that shouldn't be?

I've updated to make sure the suffix is ASCII alphanumeric / punctuation and added a test.

[alexcrichton]

👍

Looks like CI may be failing though?

[shepmaster]

Looks like CI may be failing though?

Huh...

error[E0599]: no method named `is_alphanumeric` found for type `char` in the current scope
   --> src/lib.rs:224:11
    |
224 |         c.is_alphanumeric() || is_ascii_punctuation(c)
    |           ^^^^^^^^^^^^^^^

but char::is_alphanumeric is since 1.0:

    #[stable(feature = "rust1", since = "1.0.0")]
    #[inline]
    pub fn is_alphanumeric(self) -> bool {
        self.is_alphabetic() || self.is_numeric()
    }

Am I asleep? Am I missing something really obvious?

[shepmaster]

Oh, no_std. Ok, I'll copy that implementation too.

[alexcrichton]

👍

[shepmaster]

Thank you!