Initial checkin.

Signed-off-by: Thomas Hochstein <thh@inter.net>

LICENSE

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+Copyright (c) 2014 Thomas Hochstein
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# nanoc extensions
+
+*[nanoc](http://nanoc.ws/)* is a popular *static site generator*.
+
+I'll add some little extensions for *nanoc<* here.
+
+## filters
+
+### abbreviations.rb
+
+Simple *nanoc* filter to add `<abbr>` tags.
+
+After reading a YAML document from `/content/_data/abbreviations.yam`,
+all occurences of each $abbrev are replaced by a
+`<abbr title="$abbrev">$fulltext</abbr>` construct.
+
+The filter currently uses a very naive - and time consuming - regexp approach.
+
+The abbreviations dictionay in `/content/_data/abbreviations.yaml` has to
+look like this:
+
+    ---
+	  abbreviations:
+	  - abbrev: HTML
+      fulltext: HyperText Markup Language
+
+You'll need a (compile and) routing rule to stop the `abbreviations.yaml`
+from being rendered and compiled, i.e. like this:
+
+    # ignore everything starting with _
+    compile %r{/_} do
+      nil
+    end
+    route %r{/_} do
+      nil
+    end

lib/filters/abbreviations.rb

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+# abbreviations.rb
+# a nanoc filter
+# licensed as nanoc itself
+#
+# add <bbrev> tags for all known abbreviations by a
+# very naive - and time consuming - regexp matchingA
+#
+# data source: YAML file in /content/_data/abbreviations
+#
+module Nanoc::Filters
+  class Abbreviations < Nanoc::Filter
+  	identifier :abbrev
+  	type :text
+
+    def run(content, params={})
+      output = content;
+  		@items['/_data/abbreviations/'][:abbreviations].each do |a|
+        output = output.gsub(/(\s|[-,.;:"'!?>\(\[]+)#{a[:abbrev]}(\s|[-,.;:"'!?<\)\]]+)/,'\\1<abbr title="' + a[:fulltext] + '">' + a[:abbrev]+ '</abbr>\\2')
+      end
+      return output       
+    end
+  end
+end