digit at the start of the title of a single episode misinterpreted as a range of episodes

[jcfp]

hi,

a recent bug (sabnzbd/sabnzbd#2654) filed against sabnzbd showed guessit wrongly identify a digit at the start of an episode title as a range of episodes:

Python 3.10.12 (main, Jun 11 2023, 05:26:28) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import guessit
>>> guessit.__version__
'3.7.1'
>>> guessit.api.guessit('Show.Name.1969.S01E02.2.Kings.1080p.DDP5.1.H.264')
MatchesDict([('title', 'Show Name'), ('year', 1969), ('season', 1), ('episode', 2), ('episode_title', '2 Kings'), ('screen_size', '1080p'), ('audio_codec', 'Dolby Digital Plus'), ('audio_channels', '5.1'), ('video_codec', 'H.264'), ('type', 'episode')])
>>> guessit.api.guessit('Show.Name.1969.S01E02.3.Kings.1080p.DDP5.1.H.264')
MatchesDict([('title', 'Show Name'), ('year', 1969), ('season', 1), ('episode', [2, 3]), ('episode_title', 'Kings'), ('screen_size', '1080p'), ('audio_codec', 'Dolby Digital Plus'), ('audio_channels', '5.1'), ('video_codec', 'H.264'), ('type', 'episode')])
>>> guessit.api.guessit('Show.Name.1969.S01E02.4.Kings.1080p.DDP5.1.H.264')
MatchesDict([('title', 'Show Name'), ('year', 1969), ('season', 1), ('episode', [2, 4]), ('episode_title', 'Kings'), ('screen_size', '1080p'), ('audio_codec', 'Dolby Digital Plus'), ('audio_channels', '5.1'), ('video_codec', 'H.264'), ('type', 'episode')])
>>> guessit.api.guessit('Show.Name.1969.S01E02.5.Kings.1080p.DDP5.1.H.264')
MatchesDict([('title', 'Show Name'), ('year', 1969), ('season', 1), ('episode', 2), ('episode_title', '5 Kings'), ('screen_size', '1080p'), ('audio_codec', 'Dolby Digital Plus'), ('audio_channels', '5.1'), ('video_codec', 'H.264'), ('type', 'episode')])

This handling seems to be deliberate, as it only triggers if the far end of the episode range is a maximum of 2 positions away from the initial (actual) episode number.

The very presence of an episode title doesn't make sense in case of multiple episodes (as these would generally each have their own title) and therefore could be used as a counter-indication for interpreting the number at the start of the episode title as a 'range of episodes'. That is, guessit should not apply this range style handling in the presence of an episode title, and thus correctly identify titles such as Show.Name.1969.S01E02.4.Kings.1080p.DDP5.1.H.264 as a single episode titled '4 Kings'.