term_resize

The term_resize event is fired when the main terminal is resized. For instance:

When this event fires, some parts of the terminal may have been moved or deleted. Simple terminal programs (those not using term.setCursorPos) can ignore this event, but more complex GUI programs should redraw the entire screen.

Example

Prints :

while true do
  os.pullEvent("term_resize")
  local w, h = term.getSize()
  print("The term was resized to (" .. w .. ", " .. h .. ")")
end