These changes also resolve the issue on macOS because system realpath doesn't support the given options.

I just updated to the latest asdf version 0.13.0 and started to get this error at the beginning of my sessions:

realpath: illegal option -- -
usage: realpath [-q] [path ...]
Welcome to fish, the friendly interactive shell
Type help for instructions on how to use fish
> ~

@MageJohn's patch fixes the problem.

You can use this change by pulling the latest code with asdf update --head

Any idea when will this be released? asdf update --head doesn't work if installed via brew.

@rebebop at least according to github releases, 0.13.1 was release 4 minutes ago, so give it some time :)
https://github.com/asdf-vm/asdf/releases/tag/v0.13.1

@rebebop if you're rushing, you can edit the asdf.fish file manually, it's here: /usr/local/opt/asdf/libexec/asdf.fish (at least on my machine).

Just add builtin on the 2nd line to get this:

if test -z $ASDF_DIR
    set ASDF_DIR (builtin realpath --no-symlinks (dirname (status filename)))
end
# ...

@rebebop at least according to github releases, 0.13.1 was release 4 minutes ago, so give it some time :) v0.13.1 (release)

@kblcuk All good :), when I posted, which was an hour ago, it was obviously not released so was only wondering.
@cr0t Thanks for the snippet