record key sequence linux cli showkey to \u sequence

gistfile1.txt

showkey -a

example:

ctrl+pgup

^[[5;5~ 	 27 0033 0x1b
 	 91 0133 0x5b
 	 53 0065 0x35
 	 59 0073 0x3b
 	 53 0065 0x35
 	126 0176 0x7e

send ctrl+pgup command sequence to terminal in vscode:

{
    "key": "ctrl+pageup",
    "command": "workbench.action.terminal.sendSequence",
    "args": { "text": "\u001b\u005b\u0035\u003b\u0035\u007e" },
    "when": "terminalFocus && terminalHasBeenCreated && !terminalEditorFocus || terminalFocus && terminalProcessSupported && !terminalEditorFocus"
},