From 761f48d8f09985bee9281e90c62aa34372942ef7 Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Thu, 3 Jan 2019 10:25:37 +0100
Subject: [PATCH] mescc: Mes C Library: Support GNU Awk: Add isgraph.

* lib/ctype/isgraph.c: New file.
* lib/libc+gnu.c: Include it.
* include/ctype.h: Add missing prototypes.
---
 include/ctype.h     | 14 +++++++++++++-
 lib/ctype/isgraph.c | 27 +++++++++++++++++++++++++++
 lib/libc+gnu.c      |  3 +++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 lib/ctype/isgraph.c

diff --git a/include/ctype.h b/include/ctype.h
index 8c209c52..f8acf16a 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -29,11 +29,23 @@
 
 #else // ! WITH_GLIBC
 #include <endian.h>
+
+int isalnum (int c);
 int isalpha (int c);
 int isascii (int c);
+int iscntrl (int c);
 int isdigit (int c);
-int isxdigit (int c);
+int isgraph (int c);
+int islower (int c);
+int isnumber (int c, int base);
+int isprint (int c);
+int ispunct (int c);
 int isspace (int c);
+int isupper (int c);
+int isxdigit (int c);
+int tolower (int c);
+int toupper (int c);
+
 #endif // ! WITH_GLIBC
 
 #endif // __MES_CTYPE_H
diff --git a/lib/ctype/isgraph.c b/lib/ctype/isgraph.c
new file mode 100644
index 00000000..4d8458b7
--- /dev/null
+++ b/lib/ctype/isgraph.c
@@ -0,0 +1,27 @@
+/* -*-comment-start: "//";comment-end:""-*-
+ * GNU Mes --- Maxwell Equations of Software
+ * Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+ *
+ * This file is part of GNU Mes.
+ *
+ * GNU Mes is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * GNU Mes is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+
+int
+isgraph (int c)
+{
+  return c > 32 && c < 127;
+}
diff --git a/lib/libc+gnu.c b/lib/libc+gnu.c
index c1233520..3e8d59f8 100644
--- a/lib/libc+gnu.c
+++ b/lib/libc+gnu.c
@@ -120,5 +120,8 @@
 #include <stub/sigdelset.c>
 #include <stub/ttyname.c>
 
+// gawk
+#include <ctype/isgraph.c>
+
 // tar
 #include <posix/execlp.c>