h-entry-cleantags

#!/bin/sh
clean_link_tag() {
    # <link rel="name" href="URL" /> ==> <name>URL</name> 
    sed 's#<link rel="\([^"]*\).*href="\([^"]*\)".*#<\1>\2</\1>#'
}
clean_category_tag() {
    # <category term="name" /> ==> <category>name</category>
    sed 's#<category term="\([^"]*\)".*$#<category>\1</category>#'
}
clean_auhor_tag() {
    sed 's#<name>\(.*\)</name>#\1#'
}
delete_tag_attr() {
    # <tagname attr="...">val</tagname> ==> <tagname>val</tagname>
    sed 's#^<\([^ >]*\)[^>]*>#<\1>#'
}

sed -e 's/^[ ]*//' -e 's/[ ]*$//'   \
    | clean_link_tag                \
    | clean_category_tag            \
    | clean_auhor_tag               \
    | delete_tag_attr