1 files changed, 89 insertions, 0 deletions
diff --git a/gnu/lib/libreadline/readline/chardefs.h b/gnu/lib/libreadline/readline/chardefs.h
new file mode 100644
index 000000000000..aa63da61da5c
--- /dev/null
+++ b/gnu/lib/libreadline/readline/chardefs.h
@@ -0,0 +1,89 @@
+/* chardefs.h -- Character definitions for readline. */
+#ifndef _CHARDEFS_
+#define _CHARDEFS_
+
+#include <ctype.h>
+#include <string.h>
+
+#ifndef savestring
+extern char *xmalloc ();
+#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x))
+#endif
+
+#ifndef whitespace
+#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
+#endif
+
+#ifdef CTRL
+#undef CTRL
+#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_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)
+
+#define UNMETA(c) ((c) & (~meta_character_bit))
+#define UNCTRL(c) to_upper(((c)|control_character_bit))
+
+#define lowercase_p(c) islower(c)
+#define uppercase_p(c) isupper(c)
+
+#define pure_alphabetic(c) isalpha(c)
+
+#ifndef to_upper
+#define to_upper(c) toupper(c)
+#define to_lower(c) tolower(c)
+#endif
+
+#define CTRL_P(c) ((c) < control_character_threshold)
+#define META_P(c) ((c) > meta_character_threshold)
+
+#ifndef digit_value
+#define digit_value(x) ((x) - '0')
+#endif
+
+#ifndef NEWLINE
+#define NEWLINE '\n'
+#endif
+
+#ifndef RETURN
+#define RETURN CTRL('M')
+#endif
+
+#ifndef RUBOUT
+#define RUBOUT 0x7f
+#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 0x20
+
+#ifdef ESC
+#undef ESC
+#endif
+
+#define ESC CTRL('[')
+
+#endif  /* _CHARDEFS_ */