If this variable is non-
scan-sexpstreats all non-ASCII characters as symbol constituents regardless of what the syntax table says about them. (However,
syntax-tabletext properties can still override the syntax.)
The behavior of
parse-partial-sexp is also affected by
parse-sexp-lookup-properties (see Syntax Properties).
If this buffer local variable is non-
nil, a single character which usually terminates a comment doesn't do so when that character is escaped. This is used in C and C++ Modes, where line comments starting with ‘//’ can be continued onto the next line by escaping the newline with ‘\’.
You can use
forward-comment to move forward or backward over
one comment or several comments.