fish shell: CTRL_T not starting fzf from specified file path

Checklist

[X] I have read through the manual page (man fzf)
[X] I have searched through the existing issues
[X] For bug reports, I have checked if the bug is reproducible in the latest version of fzf

Output of `fzf --version`

0.48.1 (brew)

OS

[ ] Linux
[X] macOS
[ ] Windows
[ ] Etc.

Shell

[ ] bash
[ ] zsh
[X] fish

Problem / Steps to reproduce

When I use the CTRL_T command on fish to complete a command such as ls ~/Documents, fzf does not start searching within the Documents folder as expected, but instead searches with the current working directory.

It seems like the following change to line 42 of keybindings.fish (within the function fzf-file-widget) fixes it?

<       eval (__fzfcmd)' -m --query "'$fzf_query'"' | while read -l r; set result $result $r; end
---
>       eval (__fzfcmd)' -m --walker-root='$dir' --query "'$fzf_query'"'  | while read -l r; set result $result $r; end

Alternatively, the fix could also be in line 159 (within __fzf_parse_commandline) - the comment suggests that this line is meant to strip the trailing backslash, but the line as currently written instead removes any occurrences of $dir (with or without trailing backslash) from the commandline string.

<        set fzf_query (string replace -r "^$dir/?" -- '' "$commandline")
---
>        set fzf_query (string replace -r "^$dir/?" -- "$dir" "$commandline")

Let me know if I've misunderstood something here.

junegunn / fzf