There was my proposal to add dash entities to guide.dtd etc. I suggested (erroneously) two options to do that: one was &emdash;, and the other was — That was my mistake. Right (and official) names are at http://www.w3.org/2003/entities/ Later on I found that &emdash or &endash is used rarely, but is confusing instead: all of Xml Docbook/ Dita / XHTML / TEI etc use — and – Xavier said it's irrelevant but it isn't: why introduce more chaos? Anybody using it will have to remember: "Endash here, Ndash there, Mdash there, Ndash here" :-) Hopefully, nobody except myself had time to use that entities in real documents at the moment! PLEASE! Change &emdash to &mdash, and &endash to &ndash ASAP. I'll then take care of forthcoming Russian docs. I'll also found that characher entity declarations differ between DTDs where they shouldn't. It is corrected, too. Patch encosed.
*** This bug has been marked as a duplicate of 100441 ***
OK