How to extract plaintext transcript from ConPTY

[wfjsw]

I am looking for a way to dump a plain text log from a ConPTY session. Previously I would hook on the STDOUT of the attached process and do a tee-style redirection, but doing the same on a ConPTY output pipe would yield many duplicated lines when the output exceeds the vertical terminal size.

[j4james]

Right click on the window tab and select Export Text. You can also add your own key binding for the Export Text operation if it's something you use a lot.

But if you were hoping to have the session log everything automatically as it's output, that's not supported yet. There's an open issue for that though: #14018 (also #9700).

[wfjsw]

Eh... I'm not using Windows Terminal here. Instead I am programming my own terminal window with the WPF Terminal Control and ConPTY API.
Anyway I'll look into how Windows Terminal does this. Thank you for the information.

[wfjsw]

So it called

terminal/src/cascadia/TerminalControl/TermControl.h

Line 144 in 63c3573

hstring ReadEntireBuffer() const;

and dump it all at once. This indeed suggests a way though.