ftemplate: field-aware structured template plugin

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+[[!template id=plugin name=ftemplate author="[[rubykat]]"]]
+[[!tag type/meta type/format]]
+[[!toc]]
+## NAME
+
+IkiWiki::Plugin::ftemplate - field-aware structured template plugin
+
+## SYNOPSIS
+
+    # activate the plugin
+    add_plugins => [qw{goodstuff ftemplate ....}],
+
+## DESCRIPTION
+
+This plugin provides the **ftemplate** directive.  This is like
+the [[ikiwiki/directive/template]] directive, with the addition that one does not
+have to provide all the values in the call to the template,
+because ftemplate can query structured data ("fields") using
+the [[field]] plugin.
+
+Templates are files that can be filled out and inserted into pages in
+the wiki, by using the ftemplate directive. The directive has an id
+parameter that identifies the template to use.
+
+Additional parameters can be used to fill out the template, in
+addition to the "field" values.  Passed-in values override the
+"field" values.
+
+There are two places where template files can live.  One is, as with the
+[[plugins/template]] plugin, in the /templates directory on the wiki.  These
+templates are wiki pages, and can be edited from the web like other wiki
+pages.
+
+The second place where template files can live is in the global
+templates directory (the same place where the page.tmpl template lives).
+This is a useful place to put template files if you want to prevent
+them being edited from the web, and you don't want to have to make
+them work as wiki pages.
+
+### EXAMPLES
+
+#### Example 1
+
+PageA:
+
+    [[!meta title="I Am Page A"]]
+    [[!meta description="A is for Apple."]]
+    [[!meta author="Fred Nurk"]]
+    [[!ftemplate id="mytemplate"]]
+
+Template "mytemplate":
+
+    # <TMPL_VAR NAME="TITLE">
+    by <TMPL_VAR NAME="AUTHOR">
+
+    **Summary:** <TMPL_VAR NAME="DESCRIPTION">
+
+This will give:
+
+    <h1>I Am Page A</h1>
+    <p>by Fred Nurk</p>
+    <p><strong>Summary:</strong> A is for Apple.
+
+#### Example 2: Overriding values
+
+PageB:
+
+    [[!meta title="I Am Page B"]]
+    [[!meta description="B is for Banana."]]
+    [[!meta author="Fred Nurk"]]
+    [[!ftemplate id="mytemplate" title="Bananananananas"]]
+
+This will give:
+
+    <h1>Bananananananas</h1>
+    <p>by Fred Nurk</p>
+    <p><strong>Summary:</strong> B is for Banana.
+
+### LIMITATIONS
+
+One cannot query the values of fields on pages other than the current
+page.
+
+## PREREQUISITES
+
+    IkiWiki
+    IkiWiki::Plugin::field
+    HTML::Template
+    Encode
+
+## DOWNLOAD
+
+* browse at GitHub: <http://github.com/rubykat/ikiplugins/blob/master/IkiWiki/Plugin/ftemplate.pm>
+* git repo at git://github.com/rubykat/ikiplugins.git