feat(ansi): xterm: modifyotherkeys

ansi/xterm.go

@@ -1,5 +1,22 @@
 package ansi
 
+import "strconv"
+
+// ModifyOtherKeys returns a sequence that sets XTerm modifyOtherKeys mode.
+// The mode argument specifies the mode to set.
+//
+//	0: Disable modifyOtherKeys mode.
+//	1: Enable modifyOtherKeys mode 1.
+//	2: Enable modifyOtherKeys mode 2.
+//
+//	CSI > 4 ; mode m
+//
+// See: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Functions-using-CSI-_-ordered-by-the-final-character_s_
+// See: https://invisible-island.net/xterm/manpage/xterm.html#VT100-Widget-Resources:modifyOtherKeys
+func ModifyOtherKeys(mode int) string {
+	return "\x1b[>4;" + strconv.Itoa(mode) + "m"
+}
+
 // DisableModifyOtherKeys disables the modifyOtherKeys mode.
 //
 //	CSI > 4 ; 0 m