man.base.url.for.relative.links — Specifies a base URL for relative links
<xsl:param name="man.base.url.for.relative.links">[set $man.base.url.for.relative.links]/</xsl:param>
For any “notesource” listed in the auto-generated
“NOTES” section of output man pages (which is generated when
the value of the
man.endnotes.list.enabled parameter
is non-zero), if the notesource is a link source with a
relative URI, the URI is displayed in output with the value
of the
man.base.url.for.relative.links
parameter prepended to the value of the link URI.
A link source is an notesource that references an external resource:
a ulink element with a url attribute
any element with an xlink:href attribute
an imagedata, audiodata, or
videodata element
If you use relative URIs in link sources in your DocBook
refentry source, and you leave
man.base.url.for.relative.links
unset, the relative links will appear “as is” in the “Notes”
section of any man-page output generated from your source.
That’s probably not what you want, because such relative
links are only usable in the context of HTML output. So, to
make the links meaningful and usable in the context of
man-page output, set a value for
man.base.url.for.relative.links that
points to the online version of HTML output generated from
your DocBook refentry source. For
example:
<xsl:param name="man.base.url.for.relative.links"
>http://www.kernel.org/pub/software/scm/git/docs/</xsl:param>