Addendum to Bug #45286: backport macro name form other tree

use same (slightly unwieldy) name in all trees; fix before this version goes "public".
bless ctype to avoid upmerge conflict, le sigh.

cmd-line-utils/readline/bind.c

@@ -701,7 +701,7 @@ rl_function_of_keyseq (keyseq, map, type)
     {
       unsigned char ic = keyseq[i];
 
-      if (META_BYTE (ic) && _rl_convert_meta_chars_to_ascii)
+      if (META_CHAR_FOR_UCHAR (ic) && _rl_convert_meta_chars_to_ascii)
 	{
 	  if (map[ESC].type == ISKMAP)
 	    {

cmd-line-utils/readline/chardefs.h

@@ -59,8 +59,8 @@
 #define largest_char 255		    /* Largest character value. */
 
 #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0))
-#define META_BYTE(c) ((c) > meta_character_threshold)
-#define META_CHAR(c) (META_BYTE(c) && (c) <= largest_char)
+#define META_CHAR_FOR_UCHAR(c) ((c) > meta_character_threshold)
+#define META_CHAR(c) (META_CHAR_FOR_UCHAR(c) && (c) <= largest_char)
 
 #define CTRL(c) ((c) & control_character_mask)
 #define META(c) ((c) | meta_character_bit)

cmd-line-utils/readline/display.c

@@ -1888,7 +1888,7 @@ rl_character_len (c, pos)
 
   uc = (unsigned char)c;
 
-  if (META_BYTE (uc))
+  if (META_CHAR_FOR_UCHAR (uc))
     return ((_rl_output_meta_chars == 0) ? 4 : 1);
 
   if (uc == '\t')

strings/ctype.c

@@ -328,9 +328,8 @@ my_string_repertoire(CHARSET_INFO *cs, const char *str, ulong length)
   {
     my_wc_t wc;
     int chlen;
-    for (; (chlen= cs->cset->mb_wc(cs, &wc, 
-                                   (const unsigned char *) str, 
-                                   (const unsigned char *) strend)) > 0; 
+    for (;
+         (chlen= cs->cset->mb_wc(cs, &wc, (uchar*) str, (uchar*) strend)) > 0;
          str+= chlen)
     {
       if (wc > 0x7F)