This patch series improves parsing of csi sequences to be more compliant with current practice. ECMA-64 defines the format of CSI sequences which allow more characters than what the vt parser currently accepts. More importantly many of these characters are used in sequences that more capable terminal terminal implementations use. Adjust the parsing of CSI sequences to match xterm* by ignoring all unknown sequences of the form (ESC [)|CSI [\x20-\x3f]*[\x40-\x7e] This avoids printing unwanted characters when application send valid sequences not supported by linux either while querying the terminal for it's identity or when applications print sequences without knowing what terminal implementation they are connected to (e.g. when connected over serial lines, android's adb, simple tcp connects, etc) * and other common terminals
