# One-time setup, preserve original cd definition
if not functions -q __cd_orig
    functions --copy cd __cd_orig
end

function cd --wraps=cd --description "Change directory. No args goes to git root or $HOME."
    if test (count $argv) -ne 0; or not git rev-parse --is-inside-work-tree &>/dev/null
        __cd_orig $argv
    else
        __cd_orig (git rev-parse --show-toplevel)
    end
end