Control: retitle -1 libxml2: XHTML 1.0 validation is broken with w3c-dtd-xhtml's xhtml-special.ent file Control: tags -1 - unreproducible
This should be reproducible with w3c-dtd-xhtml's xhtml-special.ent file. The summary of the actual issue is below. On 2021-09-20 03:18:46 +0200, Vincent Lefevre wrote: [...] > So the issue seems to occur when reading xhtml-special.ent. > > Hmm... there seems to be a subtle difference in xhtml-special.ent: > > With the file from w3c-dtd-xhtml: > > <!ENTITY quot """ ><!-- quotation mark = APL quote, U+0022 ISOnum --> > <!ENTITY amp "&" ><!-- ampersand, U+0026 ISOnum --> > <!ENTITY lt "<" ><!-- less-than sign, U+003C ISOnum --> > <!ENTITY gt ">" ><!-- greater-than sign, U+003E ISOnum --> > > But with the file from w3c-sgml-lib: > > <!ENTITY lt "&#60;" ><!-- less-than sign, U+003C ISOnum --> > <!ENTITY gt ">" ><!-- greater-than sign, U+003E ISOnum --> > <!ENTITY amp "&#38;" ><!-- ampersand, U+0026 ISOnum --> > <!ENTITY apos "'" ><!-- The Apostrophe (Apostrophe Quote, APL Quote), > U+0027 ISOnum --> > <!ENTITY quot """ ><!-- quotation mark (Quote Double), U+0022 ISOnum > --> > > The errors correspond to amp and lt. > > Now, I don't know whether the new libxml2 version is too picky, > or there was a real issue with the old entity files (ignored > by all parsers until now?). In the latter case, I think that > there should be a Breaks against w3c-dtd-xhtml. > > One more thing: I've just checked on my Debian/stable machine, > which just has w3c-sgml-lib installed: > "xmllint --loaddtd --nonet --noout" works without any error. > Thus there should be no issue by switching w3c-dtd-xhtml to > w3c-sgml-lib. FYI, the change of xhtml-special.ent upstream seems to be in https://github.com/w3c/markup-validator/commit/fa78ea2526fe20a89c90c4734f704fb0126186fd (the diff output by git seems incorrect: one needs to browse the files from the parent d1431fc to see the old version). -- Vincent Lefèvre <vinc...@vinc17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
