[patch] Selection stats in statusbar

[Jürgen Spitzmüller]

Am Donnerstag, dem 18.08.2022 um 11:42 +0200 schrieb Jürgen
Spitzmüller:
> The attached seems to work basically. But I haven't check for all
> cases (I am dure there are cases I missed) and didn't push hard for
> performance (currently the timer is commented out; if this is too
> expensive, processes should be managed via QFuture).

Performance is an issue in larger documents (e.g., UserGuide).

This one, using threads, is snappy and seems to update reliably.

However, it crashes on each undo or redo action.

-- 
Jürgen
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