Request Summary: If no extension is entered for the filename in the Confluence plugin, automatically append ".png".
We use Confluence 5.4 and a user was having issues uploading images via Greenshot when we renamed the file to something more descriptive/concise. It would upload and show in attachments but the preview was broken and it inserted into the page as a link instead of the image.
After some testing I determined that it was because the filename originally had a .png extension (didn't see it at first since the filename was so long) and we didn't specify the extension when renaming the file.
While I know the workaround now, it would be nice have the extension added when the user forgets (and this mimics other Windows applications which will automatically supply a default extension).
I can supply more information/screenshots if necessary.