Help:Interwiki linking

Some known interwiki links are not supported in the OEIS Wiki. Instead of, say [[purlnet:xyzzy/eis]], use an ordinary external link [http://purl.net/xyzzy/eis xyzzy/eis]. The default [[wikipedia:OEIS]] or [[wikipedia:OEIS|OEIS on wikipedia]] interwiki links are rendered as wikipedia:OEIS or OEIS on wikipedia, respectively.

Examples

1. • Use [[OEIS:webcam|webcam]] to get webcam
   • Use [[OEIS:webcam|]] to get webcam (note added "|" character for this shorthand)
   • Alternatively, use {{oeis|webcam}} to get webcam
   • Use [[OEIS:webcam|WebCam]] to get WebCam as on the OEIS pages
   • Alternatively, use {{oeis|webcam|WebCam}} to get WebCam as on the OEIS pages
2. • Use [[commons:Project:Welcome]] to get commons:Project:Welcome (general namespace Project)
   • Alternatively, use {{Commons|Project:Welcome| }} to get Project:Welcome
   • Use [[commons:Commons:Welcome]] to get commons:Commons:Welcome (ditto, specific namespace Commons)
   • Alternatively, use {{Commons|Commons:Welcome| }} to get Commons:Welcome
   • Use [[commons:COM:Welcome]] to get commons:COM:Welcome (ditto, specific namespace alias)
   • Use [[commons:COM:Welcome|]] to get COM:Welcome (note added "|" character for this shorthand)
   • Alternatively, use {{Commons|COM:Welcome| }} to get COM:Welcome
3. • Use [[google:OEIS]] to get a google:OEIS search (compare with the googlesearch form system message)
4. • Use [[mediawikiwiki:Project:About|]] to get Project:About (MediaWiki Wiki about page)
   • Alternatively, use {{MediaWiki|Project:About| }} to get Project:About
   • In imported pages try to replace [[mw:whatever]] by [[mediawikiwiki:whatever]]
5. • Use [[metawikipedia:Project:About|]] to get Project:About (Wikimedia Meta-Wiki about page)
   • Use [[metawikipedia:Meta:About_Meta|]] to get Meta:About_Meta (ditto, specific namespace Meta)
   • Alternatively, use {{Meta-Wiki|Project:About| }} to get Project:About
   • Alternatively, use {{Meta|Project:About| }} to get Project:About
   • In imported pages try to replace [[m:whatever]] by [[metawikipedia:whatever]]
6. • Use [[wikipedia:Project:About|]] to get Project:About (Wikipedia about page)
   • Alternatively, use {{Wikipedia|Project:About| }} to get Project:About
   • In imported pages try to replace [[w:whatever]] by [[wikipedia:whatever]]
   • In imported pages try to replace [[en:whatever]] by [[wikipedia:whatever]]
   • In imported pages try to replace [[fr:whatever]] by [[wikipedia:fr:whatever]]
7. • Use [[wikt:Project:About|]] to get Project:About (Wiktionary about page)
   • Alternatively, use {{Wiktionary|Project:About| }} to get Project:About
   • Alternatively, use {{Wikt|Project:About| }} to get Project:About

For Wikipedias in other languages there is a working fr:Wikipedia example at the end of the next section.

Caveats

MediaWiki terminology: [[Talk:Main Page]], [[Project:Project]], or [[OeisWiki:About]] are not interwiki links, but pages in different namespaces of this Wiki. As you might guess, project pages in namespace 4 can be addressed by the general Project: or the specific OeisWiki: prefix.

Imports from a Wikipedia, e.g. templates, might contain links such as [[Wikipedia:Template messages]] rendered as Wikipedia:Template messages.  This broken link is not shown as red link, because it is interpreted as interwiki link to an article Template messages on en:Wikipedia, which doesn't exist — similar examples for existing articles could be worse.  If you import templates from en:Wikipedia make sure to replace all [[Wikipedia:whatever]] by [[wikipedia:Wikipedia:whatever|]]. For the Template messages example this yields Wikipedia:Template messages; compare this with the incorrect link shown above. In imports from Meta the en: or w: interwiki links to Wikipedia:Template messages or Wikipedia:Template messages would be obviously wrong, and generally templates imported from other sources tend to be far simpler than convoluted en:Wikipedia solutions.

In imports from other Wikipedias, say fr:Wikipedia, try to replace their Wikipedia: namespace in wiki links by an interwiki link wikipedia:fr:Wikipedia:, e.g., [[wikipedia:fr:Wikipedia:About]] rendered as wikipedia:fr:Wikipedia:About — this could be improved to get the proper wikipedia:fr:Wikipédia:À_propos or a portable wikipedia:fr:Project:About.

A-numbers

Since September, 2011 sequences given by their A-number in plain text on OEISwiki pages are rendered as links, e.g., A012345 is automatically rendered as A012345. Of course the older styles of links to A-numbers still work. You could use templates such as {{A|012345}} or {{oeis|A012345|title}} to create Interwiki links for [[OEIS:A012345|]] or [[OEIS:A012345|title]], respectively.

Caveat: Any #REDIRECT A012345, e.g., on a page [[A012345]] trying to fix a A012345 "red link", fails miserably. The MediaWiki software does not anymore support Interwiki redirects, because that resulted in maintenance issues. The target page could not detect these links with What links here, the spammers found ways to abuse this feature, and it also was not efficient. You could create a "soft redirect"—this is an ordinary local landing page, e.g., [[A012345]], with a polite invitation to click on an ordinary Interwiki link, e.g., [[OEIS:A012345|]].

For fans of graph theory: A #REDIRECT A012345 on a page [[A012345]] would result in a double redirect, because the page redirects to itself when the erroneous OEIS: moniker is ignored.

External links

• Extension:Interwiki—MediaWiki.org.
• Manual:Interwiki—MediaWiki.org.
• Manual:Interwiki table—MediaWiki.org.
• Manual:Wiki family—MediaWiki.org. (e.g. wiki-project in different languages)