rfc2047-quote-special-characters-in-quoted-strings

rfc2047-quote-special-characters-in-quoted-strings is a compiled Lisp function in `rfc2047.el'.

(rfc2047-quote-special-characters-in-quoted-strings &optional ENCODABLE-REGEXP)

Quote special characters with `\'s in quoted strings.
Quoting will not be done in a quoted string if it contains characters
matching ENCODABLE-REGEXP or it is within parentheses.