from markdown_it import MarkdownIt

_markdown = MarkdownIt('js-default', {'html': False, 'breaks': True})


def render_markdown(text):
    """Render markdown text to safe HTML.

    Raw HTML is escaped and dangerous link schemes (javascript:, data:,
    vbscript:) are rejected by markdown-it with html=False.
    """
    if not text:
        return ''
    return _markdown.render(text).rstrip('\n')