Citat:
Function: escape
escape(string)
The top-level function, escape, encodes the string that is contained in the string argument to make it portable. A string is considered portable if it can be transmitted across any network to any computer that supports ASCII characters.
To make a string portable, characters other than the following 69 ASCII characters must be encoded:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
1234567890
@*-_+./
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Znak + se, dakle, ne enkoduje pomocu escape.