bug#34869: Feature-Requests: text field history

[Tobias Zawada]

Hello Emacs maintainers,

I have some feature requests:

1. Most practical request: There is interest in an input history for the search 
text field in the customization buffer: 
https://emacs.stackexchange.com/q/48325/2370. A naive solution is provided on 
the same page. It is quite hacky since it advises the existing customization 
buffer.

2. For the implementation of the feature in item 1 I would very much appreciate 
a text field with history in the widget library.

3. For the implementation of the text field widget history it would be very 
nice if the history part of the minibuffer history in simple.el would be 
transformed into an abstract history library that can be re-used for the 
minibuffer history as well as the widget history. Something like isearch and 
completion would work in general histories as well.

Best regards,
Tobias