I added the ability to load an external subtitle file by default.
This solves the problem with MKV files, since they can contain attached subtitles, smplayer usually chooses those with the mkv instead of external.
This can be changed by a simple checkbox, not selected by default:
Options → Preferences → Subtitles → [tab]Subtitles → [checkbox]Prefer subtitles from external file
I would be glad if it would have been attached to the smplayer[the first one]
I do not quite know svn.