Full-search. No result on some words or characters

[ScharfViktor]

Start ocis with tika use https://github.com/owncloud/web/blob/master/docker-compose.yml

tika cuts and stores only the words. all characters, numbers, prepositions, and punctuation marks are cut off.
you can't find something using non-words or words with character and it won't show up in the search results

Example:

1. content with a number user1 shares the file to Marie

• Search doesn't get result by user1.
• if we search for user -> <mark>user</mark> user shares file marie -> no numbers, no article the and preposition to

2. content with a link https://localhost/remote.php/dav/files/admin/Photos/San%20Francisco.jpg.

• Upload ownCloud manual.pdf. here can download it: https://cloud.owncloud.com/s/5stDcdTW7K7XJio -
• search for localhost.
• result -> <oc:highlights>...xml &#39;http <mark>localhost</mark> remote php dav files admin photos san francisco jpg&#39;return…</oc:highlights>

3. content with a find can should will .... words

• no search results for words

[ScharfViktor]

when we use keywords like where, this, what to search the file via full-search then it does not search

[saw-jan]

TODO (when fixed):

• add test coverage

[fschade]

confirmed, everything expect 3. is a bug, 3 is intended since those words are part of the stop word list.
Anyway, it makes sense to have a option if stop word cleaning should take place or not, i take care.

[ScharfViktor]

TODO (when fixed):

• add test coverage

#7574