Set terminal type to vt100.

terminal.c

@@ -569,6 +569,7 @@ terminal_run(struct terminal *terminal, const char *path)
 	pid = forkpty(&master, NULL, NULL, NULL);
 	if (pid == 0) {
 		close(master);
+		setenv("TERM", "vt100", 1);
 		if (execl(path, path, NULL)) {
 			printf("exec failed: %m\n");
 			exit(EXIT_FAILURE);