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===================================================================
RCS file: /ftp/cvs/cvsroot/src/lib/libc/gen/ispunct.3,v
retrieving revision 1.5
retrieving revision 1.5.12.4
diff -u -p -r1.5 -r1.5.12.4
--- src/lib/libc/gen/ispunct.3	1998/02/05 18:47:21	1.5
+++ src/lib/libc/gen/ispunct.3	2002/08/01 03:28:10	1.5.12.4
@@ -1,4 +1,4 @@
-.\"	$NetBSD: ispunct.3,v 1.5 1998/02/05 18:47:21 perry Exp $
+.\"	$NetBSD: ispunct.3,v 1.5.12.4 2002/08/01 03:28:10 nathanw Exp $
 .\"
 .\" Copyright (c) 1991 The Regents of the University of California.
 .\" All rights reserved.
@@ -46,7 +46,7 @@
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
-.Fd #include <ctype.h>
+.Fd #include \*[Lt]ctype.h\*[Gt]
 .Ft int
 .Fn ispunct "int c"
 .Sh DESCRIPTION
@@ -74,13 +74,21 @@ returns non-zero if the character tests 
 .Xr isspace 3 ,
 .Xr isupper 3 ,
 .Xr isxdigit 3 ,
+.Xr stdio 3 ,
 .Xr toascii 3 ,
 .Xr tolower 3 ,
 .Xr toupper 3 ,
-.Xr stdio 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
 .Fn ispunct
 function conforms to
 .St -ansiC .
+.Sh CAVEATS
+The argument to
+.Fn ispunct
+must be
+.Dv EOF
+or representable as an
+.Li unsigned char ;
+otherwise, the result is undefined.