Update Elisp Documentation (27.2)

- Change Elisp scraper to FileScraper
- Add notes about how to obtain Elisp doc files

Author: MasterEnoc

assets/javascripts/templates/pages/about_tmpl.coffee

@@ -268,7 +268,7 @@ credits = [
     'https://raw.githubusercontent.com/elixir-lang/elixir/master/LICENSE'
   ], [
     'Elisp',
-    '1990-1996, 1998-2019 Free Software Foundation, Inc.',
+    '1990-1996, 1998-2021 Free Software Foundation, Inc.',
     'GPLv3',
     'https://www.gnu.org/licenses/gpl-3.0.html'
   ], [

docs/file-scrapers.md

@@ -37,6 +37,16 @@ curl https://media.djangoproject.com/docs/django-docs-$VERSION-en.zip | \
 bsdtar --extract --file - --directory=docs/django\~$VERSION/
 ```
 
+## Elisp
+
+Go to https://www.gnu.org/software/emacs/manual/elisp.html, donwload the HTML tarball and extract its content in `/path/to/devdocs/docs/elisp` or run the following command:
+
+```sh
+mkdir /path/to/devdocs/docs/elisp \
+&& curl curl https://www.gnu.org/software/emacs/manual/elisp.html_node.tar.gz | \
+tar --extract --gzip --strip-components=1 --directory=/path/to/devdocs/docs/elisp
+```
+
 ## Erlang
 
 Go to https://www.erlang.org/downloads and download the HTML documentation file.

lib/docs/scrapers/elisp.rb

@@ -1,7 +1,7 @@
 module Docs
-  class Elisp < UrlScraper
+  class Elisp < FileScraper
     self.type = 'elisp'
-    self.release = '27.1'
+    self.release = '27.2'
     self.base_url= 'https://www.gnu.org/software/emacs/manual/html_node/elisp/'
     self.root_path = 'index.html'
     self.links = {
@@ -57,7 +57,7 @@ class Elisp < UrlScraper
     end
 
     options[:attribution]= <<-HTML
-      Copyright &copy; 1990-1996, 1998-2019 Free Software Foundation, Inc. <br>
+      Copyright &copy; 1990-1996, 1998-2021 Free Software Foundation, Inc. <br>
       Licensed under the GNU GPL license.
     HTML