Does TYPOlight "duplicate" content?

[iamincognito]

I need the community help.

I've discovered that while searching my TL site user receive duplicated (multiplicated) links leading to the same page. This "artefact" can be seen at the image attached: actual "static" article alias is underlined with magenta, and "variable" part of url is underlined with green.

AFAIK search engines "dislike" sites with multiplicated content, as far as site visitors won't be happy to dig site search results to find "a needle in a haystack".

So I'd like to fix this behaviour (and first of all to understand the cause)... Can somebody help me?

[spirelli]

I think that may not be an actual duplication on your site, but duplicated entries in the search index.

Try clearing your TL search index (Maintenance > Purge data: tl_search_index)

[FloB]

What extensions are installed, do you use a custom one? Looks like your Linking is somehow flawed. Certainly doesn't look like native TYPOlight URLs.

[iamincognito]

spirelli,
thnks for advise, but I've already tested this version

FloB,
Approx. 40 extensions are installed, and none of them are custom. To be more precise, I use slightly "tuned" Catalog extension, but it can't produce such kind of bugs IMHO.

I've been suspected "zedseries_langugemenu" extension of this "crime". Just deleted it from the site, but nothing changed

Full list of extension installed:
autolink
avatar
backend_filterwiz
backend_tabletree
banner
boxes
catalog
catalog_ext
ce-access
ce_flash
changelanguage
coverpicture
cron
csseditor
dompdf
downloadarchive
ext
extended_checkbox
exttypolight
gallery
geshi
googlesitemap
helpdesk
keywords
mailusername
morelinks
moretags
newslanguage
randomarticle
redirect
styleVis
subcolumns
tabcontrol
tags
tags_articles
tags_news
taxonomy
xtmembers
yw_youtube

[FloB]

Could be catalog or autolink. Dunno how they work, though …

[iamincognito]

It seems my problem is caused by improper .htaccess rules:
===

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(ua|ru|en|cn)/$ /index.php?alias_lang=$1&alias_struct=home&%{QUERY_STRING} [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^([^/]+)/([^/]+)/([01-9][01-9][01-9][01-9])-?([01-9][01-9])?-?([01-9][01-9])?/ /index.php?alias_lang=$1&alias_struct=$2&dy=$3&dm=$4&dd=$5&%{QUERY_STRING} [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^([^/]+)/([^/]+)/([^/]+)/ /index.php?alias_lang=$1&alias_struct=$2&key=$3&%{QUERY_STRING} [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^([^/]+)/?([^/]+)/? /index.php?alias_lang=$1&alias_struct=$2&%{QUERY_STRING} [L]

===
Those strange "alial_lang" and "alias_struct" inside all the wrong urls aren't present in the original TL installation .htaccess... Now I have to discover which of the extensions adds those rules to .htaccess, and my quest will be finished