[Search Directory] fix using wrong fd on Debian OSes

Follow up to a bug and missing readme update in #282. #282 (comment)

README.md

@@ -86,7 +86,7 @@ First, install a proper version of these CLI dependencies:
 | [fd][]   | 8.5.0                    | faster, colorized alternative to `find` |
 | [bat][]  | 0.16.0                   | smarter `cat` with syntax highlighting  |
 
-[fd][] and [bat][] only need to be installed if you will use [Search Directory][]. If your package manager [doesn't install them as `fd` and `bat`](https://github.com/PatrickF1/fzf.fish/wiki/Troubleshooting#search-directory-does-not-work) respectively, then you can symlink them to those names.
+[fd][] and [bat][] only need to be installed if you will use [Search Directory][].
 
 Next, because `fzf.fish` is incompatible with other fzf plugins, [check for and remove these two common alternatives](https://github.com/PatrickF1/fzf.fish/wiki/Uninstalling-other-fzf-plugins).
 

functions/_fzf_search_directory.fish

@@ -1,7 +1,8 @@
 function _fzf_search_directory --description "Search the current directory. Replace the current token with the selected file paths."
     # Directly use fd binary to avoid output buffering delay caused by a fd alias, if any.
-    # Debian-based distros install fd as fdfind so also check for that. Fall back to "fd" for a clear error message.
-    set fd_cmd (command -v fd || command -v fdfind || echo "fd")
+    # Debian-based distros install fd as fdfind and the fd package is something else, so
+    # check for fdfind first. Fall back to "fd" for a clear error message.
+    set fd_cmd (command -v fdfind || command -v fd  || echo "fd")
     set --append fd_cmd --color=always $fzf_fd_opts
 
     # $fzf_dir_opts is the deprecated version of $fzf_directory_opts