1 files changed, 46 insertions, 3 deletions
diff --git a/readline/chardefs.h b/readline/chardefs.h
index 9749ae4..43d8539 100644
--- a/readline/chardefs.h
+++ b/readline/chardefs.h
@@ -1,8 +1,21 @@
 /* chardefs.h -- Character definitions for readline. */
 #ifndef _CHARDEFS_
+#define _CHARDEFS_
+
+#include <ctype.h>
+
+#if defined (HAVE_STRING_H)
+#  include <string.h>
+#else
+#  include <strings.h>
+#endif /* HAVE_STRING_H */
 
 #ifndef savestring
-#define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
+extern char *xmalloc ();
+#  ifndef strcpy
+extern char *strcpy ();
+#  endif
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
 #endif
 
 #ifndef whitespace
@@ -14,11 +27,13 @@
 #endif
 
 /* Some character stuff. */
-#define control_character_threshold 0x020   /* smaller than this is control */
-#define meta_character_threshold 0x07f	    /* larger than this is Meta. */
+#define control_character_threshold 0x020   /* Smaller than this is control. */
+#define meta_character_threshold 0x07f	    /* Larger than this is Meta. */
 #define control_character_bit 0x40	    /* 0x000000, must be off. */
 #define meta_character_bit 0x080	    /* x0000000, must be on. */
+#define largest_char 255		    /* Largest character value. */
 
+#define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
 #define CTRL(c) ((c) & (~control_character_bit))
 #define META(c) ((c) | meta_character_bit)
 
@@ -38,13 +53,41 @@
 #define CTRL_P(c) ((c) < control_character_threshold)
 #define META_P(c) ((c) > meta_character_threshold)
 
+#ifndef NEWLINE
 #define NEWLINE '\n'
+#endif
+
+#ifndef RETURN
 #define RETURN CTRL('M')
+#endif
+
+#ifndef RUBOUT
 #define RUBOUT 0x07f
+#endif
+
+#ifndef TAB
 #define TAB '\t'
+#endif
+
+#ifdef ABORT_CHAR
+#undef ABORT_CHAR
+#endif
 #define ABORT_CHAR CTRL('G')
+
+#ifdef PAGE
+#undef PAGE
+#endif
 #define PAGE CTRL('L')
+
+#ifdef SPACE
+#undef SPACE
+#endif
 #define SPACE 0x020
+
+#ifdef ESC
+#undef ESC
+#endif
+
 #define ESC CTRL('[')
 
 #endif  /* _CHARDEFS_ */