From 4413bbd3d1689a23f441cbdca898b99d802bb6d6 Mon Sep 17 00:00:00 2001
From: Eric Blake <ebb9@byu.net>
Date: Thu, 27 Aug 2009 10:56:53 -0600
Subject: [PATCH] scan-gram: avoid portability trap with ctype usage.

* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
Avoid compiler warning.

Signed-off-by: Eric Blake <ebb9@byu.net>
(cherry picked from commit bbbbe221d7c2ff2fff88f7a0c8dbfee73f2e8a58)
---
 ChangeLog       | 6 ++++++
 src/scan-gram.l | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index aaeb4440..fc9a2745 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-08-27  Eric Blake  <ebb9@byu.net>
+
+	scan-gram: avoid portability trap with ctype usage.
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+	Avoid compiler warning.
+
 2009-08-27  Joel E. Denny  <jdenny@clemson.edu>
 
 	tests: use perl for printing special sequences to files.
diff --git a/src/scan-gram.l b/src/scan-gram.l
index 93e0d103..bcb7209b 100644
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -618,7 +618,7 @@ splice	 (\\[ \f\t\v]*\n)*
   \\(.|\n)	{
     char const *p = yytext + 1;
     /* Quote only if escaping won't make the character visible.  */
-    if (isspace (*p) && isprint (*p))
+    if (isspace ((unsigned char) *p) && isprint ((unsigned char) *p))
       p = quote (p);
     else
       p = quotearg_style_mem (escape_quoting_style, p, 1);
-- 
2.47.2