Sinatra: Suppress Newline in ERB

Posted by Christopher Rigor on November 11, 2009 
Filed Under Web Development

To suppress newline in ERB on Rails, you just add a dash on the closing tag -%>. In Sinatra, as of version 0.9.4, adding a dash doesn’t work. This has been fixed recently on the tilt gem version 0.3 which Sinatra uses for templates. You also need Sinatra newer than 0.9.4, which doesn’t exist yet so you need to get Sinatra from source.

You need to get tilt 0.3 from
sudo gem install --no-ri --no-rdoc tilt --source=

To get the latest Sinatra
cd myapp
git clone git://

and add it to the LOAD_PATH
$LOAD_PATH.unshift File.dirname(__FILE__) + '/sinatra/lib'

To set the dash as the ‘trim’ character, add
set :erb, :trim => '-'


  • tibbon

    Where do you do the set :erb? 

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