less command with markdown highlighting

.lessfilter

#!/bin/sh

# SETUP
# 
# create executable file ~/.lessfilter with the content of this file
# chmod u+x ~/.lessfilter
#
# setup less by adding lines below to ~/.zshrc
# ```
# export LESSOPEN="| ~/.lessfilter %s"
# export LESS='-F -R -S -X'
# ```
#
# DEPENDENCY
# brew install glow
#

case "$1" in
    *.md)
        CLICOLOR_FORCE=1 glow --style dark "$1"
        ;;
    *)
        # We don't handle this format.
        exit 1
esac

exit 0