SublimeTask.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import re
import sublime_plugin


class TaskCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        for region in self.view.sel():
            line_region = self.view.line(region)
            line = self.view.substr(line_region)
            lines = line.split('\n')
            processed_line = '\n'.join([self.process(each_line) for each_line in lines])
            if processed_line != line:
                self.view.replace(edit, line_region, processed_line)

    def process(self, line):
        p = re.compile('^(\s*)([-~✓])(.*)', re.UNICODE)
        m = p.match(line)
        if m:
            symbol = '-' 
            if m.group(2) == '-': 
               symbol = '~' 
            elif m.group(2) == '~': 
               symbol = '✓'

            result = '%(leading_whitespace)s%(symbol)s%(content)s' % {'leading_whitespace': m.group(1), 'symbol': symbol, 'content': m.group(3)}
            return result
        else:
            return line


    def current_encoding(self):
        if self.view.encoding() == 'Undefined':
            return self.view.settings().get('default_encoding', 'UTF-8')
        else:
            return self.view.encoding()