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This! I recently discovered this as well and it makes gdb feel like a modern-day debugger like windbg.

`C-x a` to toggle it on

`C-l` to re-draw screen when stdout gets spit out and messes up TUI

`C-p/n` for scrolling gdb history

`up/down` for scrolling code

Why not just open a proper IDE like QtCreator ? You can just use it as a gdb UI ("Debugging > Debug external application" or something like that) if you want and you get all that + editable text, a tree view for variables...

Also `C-x o` switches focus between the code and command windows, which changes function of up/down arrows (scrolling/command history).

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