zsh-platform-detect

if [[ `uname` == 'Linux' ]]
then
    export LINUX=1
    export GNU_USERLAND=1
else
    export LINUX=
fi

if [[ `uname` == 'Darwin' ]]
then
        export OSX=1
else
        export OSX=
fi

# Detect homebrew GNU userland installation
if [[ "$OSX" == "1" ]]
then
    if [[ -e $(brew --prefix coreutils)/libexec/gnubin ]]
    then
        export GNU_USERLAND=1
    fi

    source ${ZSH_CUSTOM}/jp-osx.zsh
fi

if [[ "$LINUX" == "1" ]]
then
    export EDITOR=/usr/local/bin/emc
else
    export EDITOR="subl -w"
fi