1. Preserve the saved current line and the history index while in a series of history commands.
So when switching between different history command, such as from `F8`/`Shift+F8` (`HistorySearchBackward` and `HistorySearchForward`) to `UpArrow`/`DownArrow` (recall history) or from `Ctrl+r`/`Ctrl+s` to `UpArrow`/`DownArrow`, the history command can continue to work as expected.
2. Clear the saved current line when we are out of a series of history commands.
So the saved line will not leak to another unrelated history search.
There are likely issues introduced by this PR,
but I'm merging for a new Beta so this code gets more testing.
* Introduce PSKeyInfo type alias
* Explicit conversions b/w ConsoleKeyInfo and PSKeyInfo
* Change tests to use actual ConsoleKeyInfo data
* Add fr-FR keyboard layout tests
* Add KeyInfo-ru-RU-windows.json (#839)
All impossible without Shift shortcuts labeled as "Investigate: true"
Alt+Spacebar tracked by windows itself
* Add KeyInfo for Polish (Programmers) layout on Windows and Linux (#870)
On Windows *Alt+Spacebar* is hijacked by Windows
On Linux any *Alt+F1-12* combination was not detected
Dongbo Wang