--make Filetype filter not working as expected.

[kevinkirkup]

When trying to filter search results using --make option, it doesn't show any results. When searching everything, it shows it in the Makefile.

Searching everything:

❯ ag "clean"
Makefile
26:.PHONY: check clean compile deps db-up db-down drop
39:clean:
40:     mix clean

README.md
43:* `clean`, `compile` - Cleans and compiles application source respectively

Searching with filter

❯ ag --make "clean"
❯ ag --markdown "clean"
README.md
43:* `clean`, `compile` - Cleans and compiles application source respectively