"register" is not highlighted as a keyword, and the compiler gives a cryptic error

[adzenith]

"register" is a keyword in C++, so using it as a variable name doesn't work. However, Arduino doesn't give much indication that this is the case: it doesn't highlight the word, and the compiler message is opaque.

Example code:
void foo(int register) {
Serial.write(register);
}

Error:
sketch_dec06b.ino: In function 'void foo(int)':
sketch_dec06b:2: error: expected primary-expression before 'register'

Note that the error doesn't come until the Serial.write line, because the compiler views the "int register" as a nameless argument of type "int register", rather than an attempt at making an int variable named "register". This makes debugging very confusing.

I think an easy fix would be to highlight the word "register"; ultimately, it would be nice if the compiler could spit out a nicer error in this case.

[cmaglie]

Thank you, I've added "register" as a keyword.
I see no reason adding a custom error message, the other keywords doesn't have it!

[adzenith]

Thanks!