# not all Tumblr blogs support HTTPS
determine_protocol

get_domain

# require subdomain
if [[ $domain == "tumblr.com" ]]
then
	error "Must be on a subdomain, e.g., username.tumblr.com"
	fail
fi

# cut off end of page thing that gets appended sometimes
page=${url%%'#_=_'}

# cut off trailing slash if present (to prevent duplicates)
page=${page%%/}

# strip domain
page=${page##*tumblr.com}
page=${page##/}

# get rss
if [[ -n $page ]]
then
	rss=${protocol}${domain}/${page}/rss
else
	rss=${protocol}${domain}/rss
fi

url_ext=$rss