fixed a lot of stuff

functions/search.fish

@@ -3,10 +3,13 @@ function search
         echo "Usage: search <string> [directory]"
         return 1
     end
+    if not command -q rg
+        echo "search: 'rg' (ripgrep) is not installed. Install it via your package manager."
+        return 1
+    end
 
     set query $argv[1]
     set dir "."
-
     if test (count $argv) -ge 2
         set dir $argv[2]
     end