I was looking at the german language files and saw a big list of words in an array to be used by getIgnoredSearchWords and several other search related settings.

• getIgnoredSearchWords
• getLowerLimitSearchWord
• getUpperLimitSearchWord
• getSearchDisplayedCharactersNumber

The problem is that as far as I can tell they were only used by com_search and are not used by com_finder

For com_finder I believe the equivalent is

• getIgnoredSearchWords is the list of words in com_finder.commonwords.txt
  and this is not enabled by default in the component options Filter Common Words

I dont see any equivalents for the other three

I noticed this too and asked @Hackwar and he confirm this is not used in com_finder. The commonwords list can be edited in crowdin with a variable count of words.

UPDATE
I am guessing that these 4 settings will still be used by the code in the decoupled com_search which, for me, is a problem in that we have to maintain settings in core that are never used in core. If decoupled com_search needs these settings then they should be part of the component

I would say it's a bit late to change this and would keep then till the EOL of Joomla 4 and remove it in Joomla 5.0 if not used by any other component.

or did I missed anything @Hackwar ?

maybe added a deprecated note and/or a comment where it is used ?

the Problem is that it's defined in the language packs... but sure in the cms when we call the function we should create a note to it's deprecated.