Link/a
From BDPWiki
Demo page for Help:Link intentionally not in a help namespace
{{FULLPAGENAME}} gives Link/a.
{{PAGENAME}} gives Link/a.
{{SUBPAGENAME}} gives a.
{{BASEPAGENAME}} gives Link.
[[../]] gives Link.
[[../a]] gives Link/a.
[[../b]] gives Link/b.
[[/b]] gives /b below this page.
[[/b/]] is equivalent to [[/b|b]]: they give b and b.
{{../}} gives Template:Link, due to {{#if:1|[[{{#if:|template}}:{{#if:|link|template}}:{{#if:|foo|link}}]]}} ( {{#if:1|[[{{#if:|template}}:{{#if:|link|template}} talk:{{#if:|foo|link}}|talk]]}} {{#if:1|[{{fullurl:{{#if:|template}}:{{#if:|link|template}}:{{#if:|foo|link}}|action=edit}} edit]}} {{#if:|[{{fullurl:{{#if:|template}}:{{#if:|link|template}}:{{#if:|foo|link}}|action=watch}} watch]}} {{#if:|{{#ifeq:{{#if:|link|template}}|user|[[{{#if:|template}}:Special:Contributions/{{#titleparts:{{#if:|foo|link}}|1}}|contribs]]}}}} {{#if:1|[{{fullurl:{{#if:|template}}:{{#if:|link|template}}:{{#if:|foo|link}}|action=history}} history]}} {{#if:1|[{{fullurl:{{#if:|template}}:Special:Whatlinkshere/{{#if:|link|template}}:{{#if:|foo|link}}|limit=1000}} links]}} {{#if:|[{{fullurl:{{#if:|template}}:Special:Log|page=%7B%7B%23if%3A%7Clink%7Ctemplate%7D%7D%3A%7B%7B%23if%3A%7Cfoo%7Clink%7D%7D}} logs]}} {{#if:|[[{{#if:|template}}:Special:Prefixindex/{{#if:|link|template}}:{{#if:|foo|link}}|localspace]]}} {{#if:|[{{fullurl:{{#if:|template}}:{{#if:|link|template}}:{{#if:|foo|link}}|action=delete}} delete]}} {{#if:|{{#ifeq:{{#if:|link|template}}|user|[[{{#if:|template}}:Special:Blockip/{{#titleparts:{{#if:|foo|link}}|1}}|block]]}}}} )).
{{../|abc}} gives Template:Link.
{{../abc}} gives Template:Link/abc.
In an attempt to use fullurl in combination with ../, "fullurl:" is ignored:
{{fullurl:{{NAMESPACE}}:{{BASEPAGENAME}}}} gives http://sdnhq.undp.org/wiki/Link.
{{fullurl:../}} gives Template:Fullurl:../.
{{fullurl:../|abc}} gives Template:Fullurl:../.
{{fullurl:../abc}} gives Template:Fullurl:../abc.
