python << EOF
import os, re
import vim

# tags_file_name is the name of the tags file so
# tags_file_name="project.tags" will load
#   ./project.tags
#   ../project.tags
#   ../../project.tags
#   etc..
# static_tags gets passed a string of comma ',' separated
# static tags locations eg:
#   static_tags='/usr/local/tags,/usr/local/foo/tags'
def setTags(tags_file_name="tags", static_tags=""):

    found_tags = ""

    tags = os.path.dirname(vim.current.buffer.name)
    while tags != "/tags":
        tags += "/" + tags_file_name
        if os.path.exists(tags):
            found_tags += tags + ','
        tags = re.split( r"/[^/]*/[^/]*$", tags )[0]

    vim.command("set tags=%s%s" %(found_tags, static_tags))


EOF

python setTags()