lame feature request: option to disable multiline C++ comments

[John Belmonte]

Why would this be useful?  Say if double-byte encoded characters are being used for code
comments, and the 2nd byte of the last character in a '//' comment happens to be a \.
Specifically this happens often for Japanese comments encoded in Shift-JIS or EUC.  The usual
workaround is to add a non-offending character at the end of the line when the error comes up.

I'm aware of other workarounds and also "-Wcomment"... just wondering if there is any demand out
there for such an option.