ctype: portability, sign extension and cleanup fixes

lib/libedit/chared.c

@@ -575,8 +575,8 @@ c_gets(el, buf)
 	if (el_getc(el, &ch) != 1)
 	    return ed_end_of_file(el, 0);
 	switch (ch) {
-	case 0010:	/* Delete and backspace */
-	case 0177:
+	case '\010':      /* Delete and backspace */
+	case '\177':
 	    if (len > 1) {
 		*el->el_line.cursor-- = '\0';
 		el->el_line.lastchar = el->el_line.cursor;
@@ -592,7 +592,7 @@ c_gets(el, buf)
 	    ch = 0;
 	    break;
 
-	case 0033:	/* ESC */
+	case '\033':      /* ESC */
 	case '\r':	/* Newline */
 	case '\n':
 	    break;

lib/libedit/key.c

@@ -640,7 +640,7 @@ key__decode_char(buf, cnt, ch)
     char *buf;
     int   cnt, ch;
 {
-    ch &= 0xFF;
+    ch = (unsigned char)ch;
 
     if (ch == 0) {
 	buf[cnt++] = '^';
@@ -650,10 +650,10 @@ key__decode_char(buf, cnt, ch)
 
     if (iscntrl(ch)) {
 	buf[cnt++] = '^';
-	if (ch == '\177')
+	if (ch == 0177)
 	    buf[cnt] = '?';
 	else
-	    buf[cnt] = ch | 0100;
+	    buf[cnt] = toascii(ch) | 0100;
     }
     else if (ch == '^') {
 	buf[cnt++] = '\\';
@@ -704,7 +704,7 @@ key__decode_str(str, buf, sep)
 	    if (*p == '\177')
 		*b++ = '?';
 	    else
-		*b++ = *p | 0100;
+		*b++ = toascii(*p) | 0100;
 	}
 	else if (*p == '^' || *p == '\\') {
 	    *b++ = '\\';

lib/libedit/parse.c

@@ -193,14 +193,14 @@ parse__escape(ptr)
 	    break;
 	}
     }
-    else if (*p == '^' && isalpha((unsigned char) p[1])) {
+    else if (*p == '^' && isascii(p[1]) && (p[1] == '?' || isalpha(p[1]))) {
 	p++;
 	c = (*p == '?') ? '\177' : (*p & 0237);
     }
     else
 	c = *p;
     *ptr = ++p;
-    return c;
+    return (unsigned char)c;
 }
 
 /* parse__string():

lib/libedit/refresh.c

@@ -43,7 +43,6 @@ static char sccsid[] = "@(#)refresh.c	8.1 (Berkeley) 6/4/93";
  */
 #include "sys.h"
 #include <stdio.h>
-#include <ctype.h>
 #include <unistd.h>
 #include <string.h>
 
@@ -97,7 +96,7 @@ re_addc(el, c)
     EditLine *el;
     int c;
 {
-    c &= 0xFF;
+    c = (unsigned char)c;
 
     if (isprint(c)) {
 	re_putc(el, c);
@@ -118,11 +117,11 @@ re_addc(el, c)
     }
     else if (iscntrl(c)) {
 	re_putc(el, '^');
-	if (c == '\177')
+	if (c == 0177)
 	    re_putc(el, '?');
 	else
 	    /* uncontrolify it; works only for iso8859-1 like sets */
-	    re_putc(el, (c | 0100));
+	    re_putc(el, (toascii(c) | 0100));
     }
     else {
 	re_putc(el, '\\');
@@ -876,7 +875,7 @@ re_refresh_cursor(el)
 
     /* do input buffer to el->el_line.cursor */
     for (cp = el->el_line.buffer; cp < el->el_line.cursor; cp++) {
-	c = *cp & 0xFF;
+	c = (unsigned char)*cp;
 	h++;			/* all chars at least this long */
 
 	if (c == '\n') {	/* handle newline in data part too */
@@ -949,7 +948,7 @@ re_fastaddc(el)
 {
     int c;
 
-    c = el->el_line.cursor[-1] & 0xFF;
+    c = (unsigned char)el->el_line.cursor[-1];
 
     if (c == '\t' || el->el_line.cursor != el->el_line.lastchar) {
 	re_refresh(el);		/* too hard to handle */
@@ -957,7 +956,7 @@ re_fastaddc(el)
     }				/* else (only do at end of line, no TAB) */
 
     if (iscntrl(c)) {		/* if control char, do caret */
-	char mc = (c == '\177') ? '?' : (c | 0100);
+	char mc = (c == 0177) ? '?' : (toascii(c) | 0100);
 	re_fastputc(el, '^');
 	re_fastputc(el, mc);
     }

lib/libedit/vi.c

@@ -277,7 +277,7 @@ vi_change_case(el, c)
     int c;
 {
     if (el->el_line.cursor < el->el_line.lastchar) {
-	c = *el->el_line.cursor & 0xFF;
+	c = (unsigned char)*el->el_line.cursor;
 	if (isupper(c))
 	    *el->el_line.cursor++ = tolower(c);
 	else if (islower(c))