bug#62800: [PATCH] eww: Use completion in URL/keyword prompt.

[Juri Linkov]

> It would be nice if there was a single keymap along the lines of
> "minibuffer-local-text-completion-map" that can be used for all those
> existing cases, and for completion in commands like "M-x rgrep".  But
> that is a bigger change and beyond the scope of this patch.

If you want to complete history in all non-completion minibuffers
like 'rgrep', this is easy to achieve with just:

(keymap-set minibuffer-local-map "TAB" 'minibuffer-complete-history)