+=item "\c{" is deprecated and is more clearly written as ";"
+
+(D deprecated, syntax) The C<\cI<X>> construct is intended to be a way
+to specify non-printable characters. You used it with a "{" which
+evaluates to ";", which is printable. It is planned to remove the
+ability to specify a semi-colon this way in Perl 5.16. Just use a
+semi-colon or a backslash-semi-colon without the "\c".
+
+=item "\c%c" is more clearly written simply as "%s"
+
+(W syntax) The C<\cI<X>> construct is intended to be a way to specify
+non-printable characters. You used it for a printable one, which is better
+written as simply itself, perhaps preceded by a backslash for non-word
+characters.
+