How to change input type from "text" to "search"

The patch worked fine but some functionality like autosubmit doesn't work as expected. I think need more work with the patch.

While @hudri is correct that there isn't really any semantic or styling benefit to using a <input type="search">, there is one notable UX improvement: every mobile keyboard (to my knowledge) will show a search key instead of enter, and may do other things when it knows it's a search field. It's a minor change, but does add to the overall experience:

1. <input type="search"> on MDN
2. HTML5 Input Types: Where Are They Now? — Smashing Magazine
3. Invoking Search Button in Keyboard While Typing in EditText in Android - GeeksforGeeks - contains a screenshot showing the difference

Created issue fork and made the same change the patch makes but updated to the latest as the patch no longer applies correctly. If you need the updated patch, download the plain diff from GitLab.

I have created a new patch. In conjunction with the patch: 3228546-4-search_type_form_element.patch → from this thread: Allow "search" form element for Views search fields, too → , everything works correctly, i.e. Input has type = 'search', autocomplete works as expected.