According to Patrick Jennings:
> Hi Gilles,
>
> Thanks, and <smile> I realise the unusual nature of this kludge. Hopefully,
> the exclusivity of htdg-description will render it benign on all other
> systems. I'll perhaps code a more robust solution if I can get this one
> working first.
>
> I spent a good portion of yesterday going through the code and had arrived
> at pretty much the answer you provide: skip the call to encodeSGML()
>
> However, after making the change, recompiling and executing rundig, htsearch
> doesn't produce the results either of us expected. EG: Here's a sample
> htdig-description META from my site
> (http://www.greymattermedia.com/algtr001.htm)
>
> <META NAME="htdig-description"
> CONTENT='<IMG align=left width=192 height=192
> SRC="http://www.greymattermedia.com/images/algtrs01.jpg" align=TEXTTOP
> HSPACE=5 VSPACE=0 BORDER=0 ALT="Alligator Creek National Park">Water and
> time collaborate to create a fanciful waterway. :: Alligator Creek National
> Park, Queensland, Australia; The Natural Order Katrin'>
>
> And here's the search result template for the page generated by htsearch
> (http://www.greymattermedia.com/cgi-bin/htsearch?config=htdig&restrict=&excl
> ude=&words=alligator)
>
> <dl><dt><strong><a
> href="http://www.greymattermedia.com/algtr001.htm">Suitable for Framing :: -
> Respite at Alligator Creek -</a></strong><img src="/htdig/star.gif"
> alt="*"><img src="/htdig/star.gif" alt="*"><img src="/htdig/star.gif"
> alt="*"><img src="/htdig/star.gif" alt="*">
> </dt><dd><IMG align=left width=192 height=192
> SRC="http://www.greymattermedia.com/images/algtrs01.jpg"
> align=TEXTTOP HSPACE=5 VSPACE=0 BORDER=0
> ALT="<strong>Alligator</strong> Creek National Park"><br>
> <i><a
> href="http://www.greymattermedia.com/algtr001.htm">http://www.greymattermedi
> a.com/algtr001.htm</a></i>
> <font size="-1">02/19/01, 15400 bytes</font>
> </dd></dl>
>
> This behaviour is odd on two levels:
>
> 1) It not only replaces the <, > and " characters with entities
Well, the only explanation I can see is that it's still doing the SGML
encoding on your meta description. Are you sure you are using the
patched htsearch, and not an older one? If you added the if() statement
as I suggested, did you perhaps forget the "!"?
> 2) It also truncates the text following the IMG tag in the original
> htdig-description
>
> What's really odd is that even if, for some reason, I messed up and somehow
> encodeSGML() is still getting called, that routine wouldn't be truncating
> the text. Something else is going on.
>
> I suspect there's a call made during the course of rundig that is altering
> the description string, or I've missed something in HTML.cc that's doing it.
> Not that I've been able to find it.
When HTML.cc finds the start of a tag (the "<" character), it searches
for the next ">" which it takes as the ending. That next ">" is inside
the content of your meta tag. It's a violation of the HTML standard
to embed a ">" (or a "<" for that matter) inside an HTML tag, so your
<META NAME="htdig-description" ... > tag above is invalid. You'd need to
SGML-encode the embedded "<" and ">" as < and > to get that to work.
You'll also need to set translate_lt_gt to true in your htdig.conf,
for them to get translated.
> ----- Original Message -----
> From: Gilles Detillieux <[EMAIL PROTECTED]>
> To: Patrick Jennings <[EMAIL PROTECTED]>
> Cc: <[EMAIL PROTECTED]>
> Sent: Monday, February 19, 2001 9:17 AM
> Subject: Re: [htdig] Putting HTML in the META description
>
>
> > According to Patrick Jennings:
> > > I'd like the META description** field to contain an <IMG > tag so that
> the
> > > search results page will show a left-aligned image beside the
> description.
> > >
> > > htdig's current behaviour is to replace '<' with '<' and '>' with
> '>'
> > > which, of course, results in printing out the HTML code as the
> description,
> > > rather than generating an inline image, as desired.
> > >
> > > The question is: what do I change in the code to stop this conversion?
> >
> > Well, first of all be aware that this is extremely non-standard behaviour.
> > You normally can't embed HTML tags within HTML tags in this manner.
> > However, if you want this as a site-specific kludge, you can do this by
> > changing the following line in htsearch/Display.cc's Display::excerpt()
> > method (at line 1118 in unpatched 3.1.5 code):
> >
> > encodeSGML(head_string);
> >
> > to
> >
> > if (!use_meta_description) encodeSGML(head_string);
> >
> > > **Actually, I'd already added a new META called "htdig-description" so I
> can
> > > have a different description for htdig search results than will be
> displayed
> > > by web search engines, directories, etc. However, this addition only
> > > involves 'or'ing "htdig-description" with the test for "description" in
> > > HTML.cc, so essentially the code remains as originally written.
> >
> > OK, so there were no corresponding changes to htsearch, as it used the
> same
> > database field. I assumed that in the kludge above.
> >
> > --
> > Gilles R. Detillieux E-mail: <[EMAIL PROTECTED]>
> > Spinal Cord Research Centre WWW:
> http://www.scrc.umanitoba.ca/~grdetil
> > Dept. Physiology, U. of Manitoba Phone: (204)789-3766
> > Winnipeg, MB R3E 3J7 (Canada) Fax: (204)789-3930
> >
>
--
Gilles R. Detillieux E-mail: <[EMAIL PROTECTED]>
Spinal Cord Research Centre WWW: http://www.scrc.umanitoba.ca/~grdetil
Dept. Physiology, U. of Manitoba Phone: (204)789-3766
Winnipeg, MB R3E 3J7 (Canada) Fax: (204)789-3930
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