warn about parentheses in function names after .Fn and .Fo;

particularly useful when converting from other languages to mdoc(7);
feature suggested by bentley@

1 files changed, 1 insertions, 0 deletions

diff --git a/read.c b/read.c
index 346bee13..2b984371 100644
--- a/read.c
+++ b/read.c
@@ -159,6 +159,7 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"skipping -width argument",
 	"unknown AT&T UNIX version",
 	"comma in function argument",
+	"parenthesis in function name",
 	"invalid content in Rs block",
 	"invalid Boolean argument",
 	"unknown font, skipping request",