smarter text search in tag features search - at least trailing spaces should not remove matches

[matkoniecz]

Use case
Make easier to find features when replacing gone shops

Note: it may belong rather in https://github.com/westnordost/osmfeatures

To reproduce, with English as language:

find name/opening hours/etc quest
select "can't say" -> "it does not exist"
place typing cursor in "A(n)"
type "boutique" - works as expected, sows relevant matches
press space - does not work as expected, matches are lost

As bonus: "boutique foobar" should also match terms produced by "boutique". Writing also shop name is not expected but some users will do it anyway: https://www.openstreetmap.org/note/2521421 ("Wpisałem chyba butik i nazwę" - "I probably wrote boutique and its name").

[westnordost]

.trim()

[matkoniecz]

I though about splitting on space and searching also each word separately, to support case of someone writing multiple words, with one matching.

[westnordost]

Nah. Because there can well be presets that consist of several words.