Fix use of diff(1) triggered by set -e.
Search harder for a decent diff/patch to use.
Change asciidoc backend to more recent name.
The latest asciidoc doesn't have an 'html' backend. 'html' was last valid
with version 6 ( 2005-1-28). Current options are xhtml11, or
html4, with xhtml11 by default.
[
issue21] cannot debug extension
The following patch should work.