@AlanHK: If you only work with epub3 files, you could temporarily patch
plugin.py as follows:
change line
326:
Code:
xml += '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">\n'
to:
Code:
xml += '<!DOCTYPE html>\n'
change line
354:
Code:
self.bk1.addfile(uid, basename, xml, mime)
to:
Code:
self.bk1.addfile(uid, basename, xml, mime, 'svg')
Make sure not to modify the tab characters before each line!