Use ; as path separator

src/cd.c

@@ -109,7 +109,7 @@ cdcmd(int argc, char **argv)
 	}
 	if (!dest)
 		dest = nullstr;
-	if (*dest == '/')
+	if (*dest == '/' || strchr(dest, ':'))
 		goto step6;
 	if (*dest == '.') {
 		c = dest[1];
@@ -210,19 +210,19 @@ updatepwd(const char *dir)
 
 	cdcomppath = sstrdup(dir);
 	STARTSTACKSTR(new);
-	if (*dir != '/') {
+	if (*dir != '/'  && !strchr(dir, ':')) {
 		if (curdir == nullstr)
 			return 0;
 		new = stputs(curdir, new);
 	}
 	new = makestrspace(strlen(dir) + 2, new);
 	lim = stackblock() + 1;
-	if (*dir != '/') {
+	if (*dir != '/' && !strchr(dir, ':')) {
 		if (new[-1] != '/')
 			USTPUTC('/', new);
 		if (new > lim && *lim == '/')
 			lim++;
-	} else {
+	} else if (*dir == '/') {
 		USTPUTC('/', new);
 		cdcomppath++;
 		if (dir[1] == '/' && dir[2] != '/') {

src/exec.c

@@ -193,7 +193,7 @@ padvance(const char **path, const char *name)
 	if (*path == NULL)
 		return NULL;
 	start = *path;
-	for (p = start ; *p && *p != ':' && *p != '%' ; p++);
+	for (p = start ; *p && *p != ';' && *p != '%' ; p++);
 	len = p - start + strlen(name) + 2;	/* "2" is for '/' and '\0' */
 	while (stackblocksize() < len)
 		growstackblock();
@@ -207,9 +207,9 @@ padvance(const char **path, const char *name)
 	pathopt = NULL;
 	if (*p == '%') {
 		pathopt = ++p;
-		while (*p && *p != ':')  p++;
+		while (*p && *p != ';')  p++;
 	}
-	if (*p == ':')
+	if (*p == ';')
 		*path = p + 1;
 	else
 		*path = NULL;
@@ -530,16 +530,16 @@ changepath(const char *newval)
 	for (;;) {
 		if (*old != *new) {
 			firstchange = idx;
-			if ((*old == '\0' && *new == ':')
-			 || (*old == ':' && *new == '\0'))
+			if ((*old == '\0' && *new == ';')
+			 || (*old == ';' && *new == '\0'))
 				firstchange++;
 			old = new;	/* ignore subsequent differences */
 		}
 		if (*new == '\0')
 			break;
 		if (*new == '%' && bltin < 0 && prefix(new + 1, "builtin"))
 			bltin = idx;
-		if (*new == ':') {
+		if (*new == ';') {
 			idx++;
 		}
 		new++, old++;

src/redir.c

@@ -390,15 +390,28 @@ RESET {
  * the original file dscriptor is not open.
  */
 
+int dup10(int fd) {
+	// XXX hack
+	int new_fd = dup(fd);
+	if (new_fd < 0)
+		return -1;
+	if (new_fd > 10)
+		return new_fd;
+	else {
+		int new_fd2 = dup10(new_fd);
+		close(new_fd);
+		return new_fd2;
+	}
+
+}
+
 int
 savefd(int from, int ofd)
 {
-	return from; // FIXME
-/*
 	int newfd;
 	int err;
 
-	newfd = fcntl(from, F_DUPFD, 10);
+	newfd = dup10(from);
 	err = newfd < 0 ? errno : 0;
 	if (err != EBADF) {
 		close(ofd);
@@ -409,7 +422,6 @@ savefd(int from, int ofd)
 	}
 
 	return newfd;
-*/
 }