>From a7a072a14945dfbe5fdd207926846b2c286b4b83 Mon Sep 17 00:00:00 2001
From: Paul Eggert <address@hidden>
Date: Wed, 23 Sep 2015 12:02:35 -0700
Subject: [PATCH] c-ctype: improve c_isascii testing

* tests/test-c-ctype.c (test_all): Port c_isascii test to EBCDIC.
Add a test to count the number of ASCII characters.
---
 ChangeLog            | 6 ++++++
 tests/test-c-ctype.c | 8 +++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 7f7910b..493c915 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2015-09-23  Paul Eggert  <address@hidden>
+
+	c-ctype: improve c_isascii testing
+	* tests/test-c-ctype.c (test_all): Port c_isascii test to EBCDIC.
+	Add a test to count the number of ASCII characters.
+
 2015-09-22  Paul Eggert  <address@hidden>
 
 	savewd: remove SAVEWD_CHDIR_READABLE
diff --git a/tests/test-c-ctype.c b/tests/test-c-ctype.c
index 63d0af9..80eb69d 100644
--- a/tests/test-c-ctype.c
+++ b/tests/test-c-ctype.c
@@ -37,6 +37,7 @@ static void
 test_all (void)
 {
   int c;
+  int n_isascii = 0;
 
   for (c = -0x80; c < 0x100; c++)
     {
@@ -59,7 +60,10 @@ test_all (void)
           ASSERT (to_char (c_toupper (c)) == to_char (c_toupper (c + 0x100)));
         }
 
-      ASSERT (c_isascii (c) == (c >= 0 && c < 0x80));
+      if (0 <= c)
+        n_isascii += c_isascii (c);
+
+      ASSERT (c_isascii (c) == (c_isprint (c) || c_iscntrl (c)));
 
       ASSERT (c_isalnum (c) == (c_isalpha (c) || c_isdigit (c)));
 
@@ -383,6 +387,8 @@ test_all (void)
           break;
         }
     }
+
+  ASSERT (n_isascii == 128);
 }
 
 int
-- 
2.1.0