Arseny Kapoulkine wrote:
> gui_mch_update_tabline in Windows gvim is quadratic in the number of
> tabs. This happens because the entire control is redrawn after every
> InsertItem/SetItem/DeleteItem message. The delay starts to get
> *really* noticeable at 60 open tabs or so (Windows 7).
>
> Note that disabling redraws during the update is not enough - the code
> used GetTabItemRect to check if the item is present; however, this
> forces the tab control to recompute the layout after every change,
> which still results in quadratic behavior.
>
> The attached patch fixes the issue.
Thanks, I'll add it to the todo list.
I do wonder how you can work with 60 open tabs...
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