------- Additional Comments From pinskia at gcc dot gnu dot org 2005-09-01
23:16 -------
Hmm, the comment in the preprocessor is all of those:
case '(': case '{': case '[': case '%':
/* '\(', etc, can be used at the beginning of a line in a long
string split onto multiple lines with \-newline, to prevent
Emacs or other text editors from getting confused. '\%' can
be used to prevent SCCS from mangling printf format strings. */-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23688
