What are allowed characters in cookies?

Question

What are the allowed characters in both cookie name and value? Are they same as URL or some common subset?

Reason I\'m asking is that I\'ve recently hit some strange

Answer 1

I ended up using

cookie_value = encodeURIComponent(my_string);

and

my_string = decodeURIComponent(cookie_value);

That seems to work for all kinds of characters. I had weird issues otherwise, even with characters that weren't semicolons or commas.