Using it as a viewer is the easy part. Extending all the other PDFE functionality, that is tightly connected to the PDF format, to other file types is the hard one.
So, maybe you would consider an option to enable viewing of *.djvu & *.epub file types within ScanGrid list? It could be
read-only mode with no metadata support where the only information available would be the file entry itself with its FilePath, FileName, FileSize, FileDate etc., where all the XMP metadata fields would be disbaled. You could place this option under Edit>Preferences>General as "Enable listing for (
no metadata support)": DJVU, EPUB; and include "Set Grid double click application" tabs for: DJVU, EPUB. Sumatra can open EPUBs, while sLister (WLX) can open DJV(U)s.
Even without the support for PDF (XMP) format this
optional feature would enable us to include the rest of our personal library files, motivate to further experiment with custom scripts, and stimulate for new PDFe feature ideas/suggestions. And it could also motive others (for example, perhaps, me) to participate in development of proper extension to all the PDFe functionalities
.
This could be the Bomb