tmp = re.sub(esc_seq + "^m]+m", "", mystr);
return len(tmp)
_legal_terms_re = re.compile(r'^(xterm|xterm-color|Eterm|aterm|rxvt|screen|kterm|rxvt-unicode|gnome|interix)')
_legal_terms_re = re.compile(r'^(xterm|xterm-color|Eterm|aterm|rxvt|screen|kterm|rxvt-unicode|gnome|interix|tmux)')
_disable_xtermTitle = None
_max_xtermTitle_len = 253