Tracker: Saving a song should always ensure the .yml extension

[bsh-hub]

I am constantly accidentally saving songs without the .yml extension and then they don't show in loading dialog when I try to find them. It would be good if the tracker would ensure that the .yml extension is added when saving the song. This goes probably for instruments also (haven't been saving them a lot).

A small annoyance but I have multiple times ended up with a song file without extension and then wondered where I saved it or if I saved it at all.

[vsariola]

I woke up determined to fix this easy looking issue but after looking at the code, remembered why it is like it is and why it wasn't that easy fix after all.

Namely, back in the day we had our self-written, platform-independent file explorers, but they tended to be buggy and cause issues, so we switched to using platform specific file explorer, from https://pkg.go.dev/gioui.org/x@v0.8.1/explorer. However, due to how all platforms (js included) work a bit differently, they have decided to abstract the API so that there is a single function CreateFile, to which you pass the default file name and it returns a WriteCloser: the file you have selected already opened. Their API does not allow forcing a specific file extension and if the user selected a extensionless file, they take the liberty of opening it already for you for writing.

I'll have to ponder what to do about this. I'm tempted to wrestle another match with the old, self-written file explorers, but perhaps I should look at the old issues what was wrong with them first.

[bsh-hub]

Ok. Yeah. Did not understand the scope of the thing. I think for now the current functionality is ok. There is probably much more better ways to spend time with Sointu than file dialogs. So lets put this to a nice to have, nothing else to do category :)