$NetBSD: patch-ae,v 1.10 2018/11/30 17:30:24 nia Exp $

- Use pseudo-terminal multiplexor on NetBSD.
- Use ctype.h functions correctly.

--- src/command.c.orig	2006-06-26 18:01:20.000000000 +0000
+++ src/command.c
@@ -556,7 +556,7 @@ get_pty(void)
     ptydev = ttydev = _getpty(&fd, O_RDWR | O_NDELAY, 0622, 0);
     if (ptydev == NULL)
 	goto Failed;
-#elif defined (__svr4__) || defined(__CYGWIN32__) || defined(__lnx21__)
+#elif defined (__svr4__) || defined(__CYGWIN32__) || defined(__lnx21__) || defined(__NetBSD__)
     {
 	extern char    *ptsname();
 
@@ -1251,9 +1251,9 @@ init_command(char *argv[])
     meta_char = (Options & Opt_meta8 ? 0x80 : 033);
     if (rs_modifier
 	&& strlen(rs_modifier) == 4
-	&& toupper(*rs_modifier) == 'M'
-	&& toupper(rs_modifier[1]) == 'O'
-	&& toupper(rs_modifier[2]) == 'D')
+	&& toupper((unsigned char)*rs_modifier) == 'M'
+	&& toupper((unsigned char)rs_modifier[1]) == 'O'
+	&& toupper((unsigned char)rs_modifier[2]) == 'D')
 	switch (rs_modifier[3]) {
 	case '2':
 	    ModXMask = Mod2Mask;
@@ -1329,13 +1329,13 @@ init_xlocale(void)
 	for (s = tmp; *s; s++) {
 	    char           *end, *next_s;
 
-	    for (; *s && isspace(*s); s++)
+	    for (; *s && isspace((unsigned char)*s); s++)
 		/* */ ;
 	    if (!*s)
 		break;
 	    for (end = s; (*end && (*end != ',')); end++)
 		/* */ ;
-	    for (next_s = end--; ((end >= s) && isspace(*end)); end--)
+	    for (next_s = end--; ((end >= s) && isspace((unsigned char)*end)); end--)
 		/* */ ;
 	    *++end = '\0';
 	    if (*s) {
@@ -1367,13 +1367,13 @@ init_xlocale(void)
 	unsigned short  i;
 	char           *end, *next_s;
 
-	for (; *s && isspace(*s); s++)
+	for (; *s && isspace((unsigned char)*s); s++)
 	    /* */ ;
 	if (!*s)
 	    break;
 	for (end = s; (*end && (*end != ',')); end++)
 	    /* */ ;
-	for (next_s = end--; ((end >= s) && isspace(*end));)
+	for (next_s = end--; ((end >= s) && isspace((unsigned char)*end));)
 	    *end-- = 0;
 
 	if (!strcmp(s, "OverTheSpot"))