[ShellShock]

I posted about this last year, so apologies for a bit of repetition here. I really like this plug-in, except I find the "Smarten punctuation" a bit of a blunt tool, so I have created my own version of the code in the plug-in:

        def smarten_punctuation_for_page(html):
            preprocessor = HeuristicProcessor(None, self.log)
            start = 'calibre-smartypants-'+str(uuid4())
            stop = 'calibre-smartypants-'+str(uuid4())
            html = html.replace('<!--', start)
            html = html.replace('-->', stop)
            html = preprocessor.fix_nbsp_indents(html)
            # Do not use Calibre smartyPants.
            # html = smartyPants(html)
            html = html.replace(start, '<!--')
            html = html.replace(stop, '-->')
            # convert ellipsis to entities to prevent wrapping
            html = re.sub(r'(?u)(?<=\w)\s?(\.\s?){2}\.', '&hellip;', html)
            # convert double dashes to em-dash
            html = re.sub(r'\s--\s', u'\u2014', html)
            # Convert short em-dash to em-dash.
            html = re.sub(u'\u2013', u'\u2014', html)
            # Convert space, hyphen, space to em-dash.
            html = re.sub(r'\s-\s', u'\u2014', html)
            # Convert punctuation, hyphen to em-dash.
            html = re.sub(r'([\'|"|\u2018|\u201C])-(\w)', r'\1\u2014\2', html)
            # Convert hyphen, punctuation to em-dash.
            html = re.sub(r'(\w)-([\'|"|\u2019|\u201D|?|!|,|\.])', r'\1\u2014\2', html)
            # Convert space, em-dash, space to em-dash.
            html = re.sub(r'\s*\u2014\s*', u'\u2014', html)
            return substitute_entites(html)

You can see I do not use the smartypants within Calibre, and I have added some fixes for em-dash. Perhaps there could be an "Advanced" options in the plug-in UI to give the user finer control over exactly what the smarten punctuation does?