On Thu, 13 Apr 2023 10:53:31 -0500 "Karl O. Pinc" <k...@karlpinc.com> wrote:
> On Thu, 13 Apr 2023 16:01:35 +0200 > Brar Piening <b...@gmx.de> wrote: > > > On 13.04.2023 at 10:31, Peter Eisentraut wrote: > > > Side project: I noticed that these new hover links don't appear in > > > the single-page HTML output (make postgres.html), even though the > > > generated HTML source code looks correct. Maybe someone has an > > > idea there. > > I feel responsible for the feature to work for all use cases where > > it makes sense. I'll investigate this and post back. > > Looks to me like the ">" in the CSS was transformed into the > > HTML entity when the stylesheet was included into the single-file > HTML. The XSLT 1.0 spec says that characters in <style> elements should not be escaped when outputting HTML. [4] But (I think) the generate.css.header parameter method [1][2] of inserting the CSS into the HTML expands the CSS content in an XML context, not a HTML context. I've played around with it, going so far as to make stylesheet.css look like: --------------<snip>-------- <!DOCTYPE xsl:stylesheet [ <!ENTITY css SYSTEM "stylesheet.css"> ]> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";> &css; </xsl:stylesheet> --------------<snip>-------- and even substituted the actual text of stylesheet.css in place of the &css; entity reference. In these cases the "<" character is still entity expanded, resulting in broken CSS. My conclusion is that this method is broken. (The other possibility, I suppose, is that xsltproc is broken.) I think the thing to try is the sagehill.net approach [4]. This overrides the user.head.content template. My hope is that because the &css; entity is seen in a <style> element in the template, that xsltproc then recognizances style element content in a HTML output context. (I don't know how xsltproc is supposed to know that it is in a HTML output context. I suppose exploring this would be another avenue should the above fail.) 1 https://docbook.sourceforge.net/release/xsl/current/doc/html/custom.css.source.html 2 https://docbook.sourceforge.net/release/xsl/current/doc/html/generate.css.header.html 3 http://sagehill.net/docbookxsl/HtmlHead.html#EmbedCSS 4 https://www.w3.org/TR/xslt-10/#section-HTML-Output-Method Regards, Karl <k...@karlpinc.com> Free Software: "You don't pay back, you pay forward." -- Robert A. Heinlein
