On 23/01/2024 08:52, phoebus phoebus wrote:
"Xterm 216" is unclear for me.
> PuTTY documentation in 4.4.3 Changing the action of the function keys
and keypad explain it by "In Xterm 216 mode, the unshifted function keys
behave the same as Xterm R6 mode. But pressing a function key together
with Shift or Alt or Ctrl generates a different sequence containing an
extra numeric parameter of the form (1 for Shift) + (2 for Alt) + (4 for
Ctrl) + 1. For F1-F4, the basic sequences like ESC OP become ESC
[1;bitmapP and similar; for F5 and above, ESC[index~ becomes
ESC[index;bitmap~.
Thanks. It seems it is supported by most terminal applications in Linux.
However usually enough such keystrokes are grabbed for window manager
and desktop environment hotkeys. In the case of POS it may be a kind of
single-application kiosk with no WM and DE.
The small program described in the previous proposal could indeed be the
intermediate filter.
So you can offer developers alternatives: to extend a combined
terminal+SSH application like putty or to create a filter working with
any terminal application.
