The --accept-nth option was not being respected when using --filter mode.
This caused fzf to output entire lines instead of only the specified fields.
Added buildItemTransformer() helper function to consistently apply field
transformations across filter mode (both streaming and non-streaming) and
select1/exit0 modes.
Fixes#4615
When --nth is used with a custom --delimiter, the last delimiter was
included in the search scope, forcing you to write the delimiter in
a suffix-match query. This commit removes the last delimiter from the
search scope.
# No need to write 'bar,$'
echo foo,bar,baz | fzf --delimiter , --nth 2 --filter 'bar$'
This can be seen as a breaking change, but I'm gonna say it's a bug fix.
Fix#3983
