SourceForge backend: support subfolders in RSS feed

[rathann]

There's a project called XMP that releases xmp and libxmp tarballs with different versioning. (See: https://sourceforge.net/projects/xmp/files/). There's no way in current SourceForge backend to select a subfolder from the RSS feed. I made a work-around using custom backend and https://sourceforge.net/projects/xmp/rss?path=/xmp as URL, but it'd be better if I could just specify the subfolder in the SourceForge backend setting.

[Zlopez]

This are the use cases for custom backend, if something couldn't be done in existing backend the custom one is here to help. But yes this could be added as well.

[chunkSpadunk]

Hi I want to work on the issue if it is still open

[Zlopez]

@skywalkersPadawan Feel free to start working on it :-)

[Zopolis4]

I've used the custom backend as a workaround for https://sourceforge.net/projects/bashdb/rss?path=/bashdb, but it would be nice to have a better way to do this.

[Zlopez]

@Zopolis4 The custom backend is the best choice in this case for now.