combine filter with exact match switch

[eadmaster]

if i understand correctly, this shouldn't match any string:

$ echo 'first_second_third_convert
first_second_third_query
first.second
first-second' | fzf -e -f "s c"

first_second_third_convert
first.second
first-second
first_second_third_query

Is it possible to have fzf matching whole words only?
(no matches in the above example)

[junegunn]

In that case s and c are treated as two separate search terms.

https://github.com/junegunn/fzf?tab=readme-ov-file#search-syntax

You can either escape the space (i.e. s\ c) or turn off the extended search mode with +x (or --no-extended) which I don't recommend.