The libxml-parse-html-region and libxml-parse-xml-region functions both
appear to ignore their discard-comments parameters.
When I enter the following text in a buffer and mark it:
<p>This <!-- and --> that</p>
Then the result of evaluating the _expression_
(libxml-parse-html-region (mark) (point) nil t)
is
(html nil (body nil (p nil "This " (comment nil " and ") " that")))
and the result of evaluating the _expression_
(libxml-parse-xml-region (mark) (point) nil t)
is
(p nil "This " (comment nil " and ") " that")
In both cases, I would expect that passing t as the fourth argument
would cause the comments to be dropped, but they are not.
Incidentally, I notice that the documentation for
libxml-parse-xml-region includes the following sentence:
If DISCARD-COMMENTS is non-nil, all HTML comments are discarded.
I imagine this ought to refer to "XML comments" rather than "HTML
comments."
In GNU Emacs 26.0.50 (build 1, x86_64-apple-darwin13.4.0, NS appkit-1265.21 Version 10.9.5 (Build 13F1911))
of 2017-05-15 built on builder10-9.local
Windowing system distributor 'Apple', version 10.3.1504
Recent messages:
(html nil (body nil (p nil "this " (comment nil " and ") " that"))) [2 times]
Auto-saving...
funcall-interactively: Beginning of buffer
(html nil (body nil (p nil "this " (comment nil " and ") " that"))) [2 times]
Quit [4 times]
Mark activated
(p nil "this " (comment nil " and ") " that")
uncompressing dom.el.gz...done
Note: standard-indent adjusted to 2
Quit [3 times]
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