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	<id>https://wiki.tachyony.co.uk/w/index.php?action=history&amp;feed=atom&amp;title=Template%3A%28Dis%29establishments_in_decade_category_header</id>
	<title>Template:(Dis)establishments in decade category header - Revision history</title>
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	<updated>2026-05-15T22:42:46Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.35.5</generator>
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		<id>https://wiki.tachyony.co.uk/w/index.php?title=Template:(Dis)establishments_in_decade_category_header&amp;diff=12740&amp;oldid=prev</id>
		<title>Tachyony: ←Created page with &#039;&lt;includeonly&gt;&lt;!--   # The first step is to check whether this is a category page   --&gt;{{Category other&lt;!--       --&gt;|&lt;!-- ############### It is a category ######...&#039;</title>
		<link rel="alternate" type="text/html" href="https://wiki.tachyony.co.uk/w/index.php?title=Template:(Dis)establishments_in_decade_category_header&amp;diff=12740&amp;oldid=prev"/>
		<updated>2022-04-04T14:41:16Z</updated>

		<summary type="html">&lt;p&gt;&lt;a href=&quot;/wiki/WP:AES&quot; class=&quot;mw-redirect&quot; title=&quot;WP:AES&quot;&gt;←&lt;/a&gt;Created page with &amp;#039;&amp;lt;includeonly&amp;gt;&amp;lt;!--   # The first step is to check whether this is a category page   --&amp;gt;{{Category other&amp;lt;!--       --&amp;gt;|&amp;lt;!-- ############### It is a category ######...&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;lt;includeonly&amp;gt;&amp;lt;!--&lt;br /&gt;
  # The first step is to check whether this is a category page&lt;br /&gt;
  --&amp;gt;{{Category other&amp;lt;!--&lt;br /&gt;
      --&amp;gt;|&amp;lt;!-- ############### It is a category ###############################&lt;br /&gt;
               # So check that it matches the required format:  &amp;quot;YYY0s establishments&amp;quot; or &amp;quot;YYY0s disestablishments&amp;quot;&lt;br /&gt;
               # No regexes, so check separately for &amp;quot;establishments&amp;quot; and &amp;quot;disestablishments&amp;quot;&lt;br /&gt;
               # In each case, the find function returns 0 for a nomatch, and 1 for a match,&lt;br /&gt;
               # so we add the two together and take a total of 0 as an error&lt;br /&gt;
             --&amp;gt;{{#ifeq: {{#expr: {{#invoke:String|find|{{PAGENAME}}|^%d?%d?%d?0s establishments$|plain=false}} + &amp;lt;!--&lt;br /&gt;
                   --&amp;gt;{{#invoke:String|find|{{PAGENAME}}|^%d?%d?%d?0s disestablishments$|plain=false}} }}&amp;lt;!--&lt;br /&gt;
                --&amp;gt;|0&amp;lt;!--&lt;br /&gt;
                --&amp;gt;|&amp;lt;!-- # Doesn&amp;#039;t match&lt;br /&gt;
                      --&amp;gt;{{Error|Invalid page name.&amp;lt;br /&amp;gt;[[Template:(Dis)establishments in decade category header]] is for use only on category pages whose title is of the form {{nowrap|&amp;quot;YYY0s&amp;amp;nbsp;establishments&amp;quot;}} or {{nowrap|&amp;quot;YYY0s&amp;amp;nbsp;disestablishments&amp;quot;}}, where YYY0s is an AD decade (e.g. &amp;quot;0s&amp;quot;, &amp;quot;90s&amp;quot;, &amp;quot;760s&amp;quot; or &amp;quot;1840s&amp;quot;}}&amp;lt;!--&lt;br /&gt;
                      --&amp;gt;[[Category:Errors reported by other category header templates]]&amp;lt;!--&lt;br /&gt;
                --&amp;gt;|&amp;lt;!--&lt;br /&gt;
                    --&amp;gt;{{(Dis)establishments in decade category header/core&amp;lt;!--&lt;br /&gt;
                        --&amp;gt;|decade={{#invoke:String|replace|{{PAGENAME}}|pattern=^(%d?%d?%d?0)s (d?i?s?establishments)$|%1|1|false}}&amp;lt;!--&lt;br /&gt;
                        --&amp;gt;|type={{#invoke:String|replace|{{PAGENAME}}|pattern=^(%d?%d?%d?0)s (d?i?s?establishments)$|%2|1|false}}&amp;lt;!--&lt;br /&gt;
                    --&amp;gt;}}&amp;lt;!--&lt;br /&gt;
            --&amp;gt;}}&amp;lt;!--&lt;br /&gt;
      --&amp;gt;|&amp;lt;!-- ############### Not a category ###############################&lt;br /&gt;
          --&amp;gt;{{Error|This page is not in the [[Wikipedia:Namespace|category namespace]].&amp;lt;br /&amp;gt;[[Template:(Dis)establishments in decade category header]] is for use only on category pages whose title is of the form {{nowrap|&amp;quot;YYY0s&amp;amp;nbsp;establishments&amp;quot;}} or {{nowrap|&amp;quot;YYY0s&amp;amp;nbsp;disestablishments&amp;quot;}}, where YYY0s is an AD decade (e.g. &amp;quot;0s&amp;quot;, &amp;quot;90s&amp;quot;, &amp;quot;760s&amp;quot; or &amp;quot;1840s&amp;quot;}}&amp;lt;!--&lt;br /&gt;
&lt;br /&gt;
          --&amp;gt;[[Category:Errors reported by other category header templates]]&amp;lt;!--&lt;br /&gt;
  --&amp;gt;}}&amp;lt;/includeonly&amp;gt;&amp;lt;!--&lt;br /&gt;
 # Note {{CatAutoTOC}} needs to be available whether or not this template page has been transcluded&lt;br /&gt;
--&amp;gt;{{CatAutoTOC}}&amp;lt;!--&lt;br /&gt;
--&amp;gt;&amp;lt;noinclude&amp;gt;&amp;lt;!--&lt;br /&gt;
--&amp;gt;{{Documentation|content=&amp;lt;!--&lt;br /&gt;
--&amp;gt;To make a category of the form &amp;quot;YYY0s establishments&amp;quot; or &amp;quot;YYY0s disestablishments&amp;quot;, where YYY0s is a decade&lt;br /&gt;
&lt;br /&gt;
e.g.&lt;br /&gt;
* [[:Category:0s establishments]]&lt;br /&gt;
* [[:Category:90s establishments]]&lt;br /&gt;
* [[:Category:760s establishments]]&lt;br /&gt;
* [[:Category:1840s establishments]]&lt;br /&gt;
* [[:Category:0s disestablishments]]&lt;br /&gt;
* [[:Category:40s disestablishments]]&lt;br /&gt;
* [[:Category:910s disestablishments]]&lt;br /&gt;
* [[:Category:2010s disestablishments]]&lt;br /&gt;
&lt;br /&gt;
==Usage==&lt;br /&gt;
&amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{(Dis)establishments in decade category header}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;&lt;br /&gt;
&lt;br /&gt;
No parameters needed&lt;br /&gt;
&lt;br /&gt;
== Redirects ==&lt;br /&gt;
* {{tl|Disestablishments in decade}}&lt;br /&gt;
* {{tl|Establishments in decade}}&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
* [[Template:(Dis)establishments in year category header]]&lt;br /&gt;
}}&lt;br /&gt;
[[Category:Establishments-and-disestablishments-by-decade dual-purpose templates| ]]&lt;br /&gt;
&amp;lt;/noinclude&amp;gt;&lt;/div&gt;</summary>
		<author><name>Tachyony</name></author>
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