[xml/sgml-pkgs] Bug#994795: w3-dtd-mathml: invalid redeclaration of predefined entities amp and lt yields failures with libxml2 2.9.12

[Adrian Bunk]

On Tue, Sep 21, 2021 at 03:31:17AM +0200, Vincent Lefevre wrote:
> Alternatively, I wonder whether w3c-sgml-lib (which appears to be
> correct) could replace w3-dtd-mathml,
>...

--- /usr/share/xml/schema/w3c/mathml/dtd/mathml2.dtd    2001-06-20 17:45:45.000000000 +0000
+++ /usr/share/xml/w3c-sgml-lib/schema/dtd/XX-MathML2-20031104/mathml2.dtd      2011-03-14 19:54:46.000000000 +0000
...
-        Revision:   $Id: mathml2.dtd,v 1.20 2000/12/06 19:03:13 davidc Exp $
+        Revision:   $Id: mathml2.dtd,v 1.12 2003/11/04 13:14:35 davidc Exp $
...


IOW, it seems to be fixed in the 2003 version of MathML2 but 
w3-dtd-mathml ships the older 2000 version.

BTW: python3-biopython also ships a copy of the 2000 version.

cu
Adrian