Introduce distinction between preview/productive site generation

Posts which contain the YAML attribute `published: false` are usually
not generated by Jekyll. With this patch they can be previewed just
like published posts on localhost using `rake watch`or `rake preview`.

NOTICE: Before pushing to the productive environment, use `rake generate`
to update the public directory and remove posts which are flagged not to be
published.

1 files changed, 2 insertions, 2 deletions

diff --git a/Rakefile b/Rakefile
index 7d7f6d8f..c3ad68be 100644
--- a/Rakefile
+++ b/Rakefile
@@ -59,7 +59,7 @@ task :watch do
   raise "### You haven't set anything up yet. First run `rake install` to set up an Octopress theme." unless File.directory?(source_dir)
   puts "Starting to watch source with Jekyll and Compass."
   system "compass compile --css-dir #{source_dir}/stylesheets" unless File.exist?("#{source_dir}/stylesheets/screen.css")
-  jekyllPid = Process.spawn("jekyll --auto")
+  jekyllPid = Process.spawn({"OCTOPRESS_ENV"=>"preview"}, "jekyll --auto")
   compassPid = Process.spawn("compass watch")
 
   trap("INT") {
@@ -75,7 +75,7 @@ task :preview do
   raise "### You haven't set anything up yet. First run `rake install` to set up an Octopress theme." unless File.directory?(source_dir)
   puts "Starting to watch source with Jekyll and Compass. Starting Rack on port #{server_port}"
   system "compass compile --css-dir #{source_dir}/stylesheets" unless File.exist?("#{source_dir}/stylesheets/screen.css")
-  jekyllPid = Process.spawn("jekyll --auto")
+  jekyllPid = Process.spawn({"OCTOPRESS_ENV"=>"preview"}, "jekyll --auto")
   compassPid = Process.spawn("compass watch")
   rackupPid = Process.spawn("rackup --port #{server_port}")