Help:Page name

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Contents 1 Coding of characters 2 Canonical form 3 Alphabetical order 4 Conversion of spaces to underscores and of special characters to escape codes 4.1 Variables PAGENAME and PAGENAMEE 5 See also

Coding of characters

A page name can not contain e.g. %41, because that is automatically converted to the character A, for which %41 is the code. [[%41]] is rendered as A. Similarly %C3%80 is automatically converted to the character À. [[%C3%80]] is rendered as À. The URL of the page is http://meta.wikipedia.org/wiki/%C3%80. One can argue what is the real name of the page, %C3%80 or À (a user will say the latter), but anyway there can not be distinct pages with these names.

Canonical form

The inclusion tag for a non-existing page shows a link with the canonical form of the page name: {{qwsazx}}, {{:qwsazx}} {{project:qws azx}} give Template:Qwsazx, Qwsazx, GRWiktionaryHelp:Qws azx; compare with ordinary links Template:qwsazx, qwsazx, project:qws azx; these work like piped links, e.g. [[Qwsazx|qwsazx]]; in this case the conversion shows up on the referring page only when pointing at it: in the pop-up and in the status bar (if applicable for the browser); whether the target is a redirect, and what the final target is, is not shown at all.

An attempt to include a page from another project results in just displaying the wikitext, e.g. {{en:qwsazx}}; ordinary interwiki links do not show existence and do not show a canonical form in the hover box or status bar:. The same applies if interwiki link style is used for a link to a page in the same project: m:project:qwsazx.

A saved redirect page shows the canonical form of the target, even though the preview renders the link in the usual way, compare [1] with the preview of [2].

Alphabetical order

This section appears in Help:Page name, Help:Category, and Help:Special page.

The system applies alphabetical order only in page names, namely in the following features:

• Special:Allpages
• categories

They are in Unicode order: the range 32-127 corresponds to ASCII, for more characters see w:en:Table of Unicode characters, 128 to 999, etc.

Thus we have the following partial list showing the order:

!"#$%&'()*+,-./0123456789:;<=>?@
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_'
abcdefghijklmnopqrstuvwxyz{|}~
¡¢£¤¥¦§¨©ª«­®¯°±²³´µ•¸¹º»¼½¾¿
ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ
ĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķĸĹĺĻļĽľĿŀŁłŃńŅņŇňʼnŊŋ
ŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽžſ
ǺǻǼǽǾǿ΄΅Ά·ΈΉΊΌΎΏΐ
ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩΪΫάέήίΰ
αβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ

Note in particular that "a" comes after "Z", and e.g. "é" after "z". The blank space within a page name is treated as an underscore, and therefore comes after the capitals, and before the lower case letters. However, a "blank space" after the name comes before any character. Sometimes a special character looks like a regular letter, but has a special code anyway.

Thus we have the order PC, PCX, PC Bruno, PCjr, Κύρια Σελίδα.

Conversion of spaces to underscores and of special characters to escape codes

There is no feature for just conversion of spaces to underscores and of special characters to escape codes, but there are two features for doing this in combination with something else: localurl (see Help:Variable) and PAGENAMEE.

Most needs for conversion are covered by these, but e.g. in a template one cannot link to a page with a given name {{{1}}} on a project with a different $wgScript.

Variables PAGENAME and PAGENAMEE

Variable {{PAGENAME}} gives for this page Page name, Variable {{PAGENAMEE}} gives Page_name.

Thus in the first case a space is used, in the second case an underscore, like in URLs. Similarly À becomes the escape code %C3%80 (see above), etc.

{{NAMESPACE}}:{{PAGENAME}} and {{NAMESPACE}}:{{PAGENAMEE}} give for this page Help:Page name and Help:Page_name, respectively. For a page in the main namespace the page name is prefixed with a colon.

Example:

http://meta.wikimedia.org/w/wiki.phtml?title=Special:Whatlinkshere&target={{NAMESPACE}}:{{PAGENAMEE}}

gives

http://meta.wikimedia.org/w/wiki.phtml?title=Special:Whatlinkshere&target=Help:Page_name

Within localurl, {{PAGENAME}} should be used in the first part (because it is converted by localurl), or {{PAGENAMEE}} in the second part:

• {{SERVER}}{{localurl:Special:Allpages|namespace=12&from={{PAGENAMEE}}}} gives here:

http://pgrdictionary.org/help/index.php?title=Special:Allpages&namespace=12&from=Page_name

• {{SERVER}}{{localurl:Special:Allpages/{{PAGENAME}}|namespace=12}} gives here:

http://pgrdictionary.org/help/index.php?title=Special:Allpages/Page_name&namespace=12

Wrong:

• {{SERVER}}{{localurl:Special:Allpages|namespace=12&from={{PAGENAME}}}} gives here:

http://pgrdictionary.org/help/index.php?title=Special:Allpages&namespace=12&from=Page name (wrong link)

• {{SERVER}}{{localurl:Special:Allpages/{{PAGENAMEE}}|namespace=12}} gives here:

http://pgrdictionary.org/help/index.php?title=Special:Allpages/Page_name&namespace=12 (works here, the underscore, converted from a space, is not affected by the second conversion, but it does not work with special characters).

With a Google search there is the problem that for Google the space and the underscore are different, see w:Template talk:Google.

See also

• Help:Links gives examples of conversions in the page name from wikitext to HTML, and from HTML to actual target page.
• mw:Proposed_Wikipedia_policy_on_foreign_characters#Article Titles (old)
• w:Wikipedia:Naming conventions
• w:en:Wikipedia:Naming conventions (technical restrictions)
• w:Template:Wrongtitle
• w:Wikipedia:List of pages whose correct title is not allowed by MediaWiki
• mw:Case insensitivity - about a proposal for case-insensitivity of all characters in the page name.
• http://cvs.sourceforge.net/viewcvs.py/wikipedia/phase3/docs/title.doc?rev=1.1.1.1&view=markup - not quite accurate: [[:de:name]] does not give a page with the name de:name.