ssconvert: Say which unsupported file format in error message
$ ssconvert xbs.docx xbs.txt
E Unsupported file format.
OK, but better should be to say which one:
E Unsupported file format:TXT, or
E Unsupported file format:DOCX
or both.
$ ssconvert xbs.docx xbs.txt
E Unsupported file format.
OK, but better should be to say which one:
E Unsupported file format:TXT, or
E Unsupported file format:DOCX
or both.