title: sed replace string with string containing dash in all files in folder
body: <p>In all files in a fodler, I am trying to replace all strings of the type: </p>
  
  <pre><code>load(alpha)
  </code></pre>
  
  <p>to </p>
  
  <pre><code>load(alpha, lib="lib=~/project-a/alpha")
  </code></pre>
  
  <p>using sed I tried: </p>
  
  <pre><code>find . -type f -print0 | xargs -0 sed -i 's/load(alpha)/load(alpha, lib="lib=~/project-a/alpha")/g'
  </code></pre>
  
  <p>But I get the error: 
  sed: -e expression #1, char 39: unknown option to `s'</p>
  
  <p>Any idea what I am missing?
  Thank you! </p>