> If you just want to print out the bare text, you can just put that in
> your
> erb tag: <%= my_variable %>

This didn't work either, because the value of my_variable contains 
simple quotes, and these had been replaced by an HTML entity denotation 
(in this case, it is &#39;). That's why I thought I would need 
simple_format (I was not aware that the <p> was coming from 
simple_format .... I should have known this)

Maybe I post here my code in question:

<% js_unhide_idstrings=@sequence[1..-1].map {|n| "'tu_idiom_#{n}'"} %>
<script>
  ...
  var unhide_ids=[<%= js_unhide_idstrings.join(',') %>];
  ...
</script>

If @sequence is, say [4,1,9], the generated JavaScript code would be

var unhide_ids=[&#39;tu_idiom_1&#39;,&#39;tu_idiom_9&#39;];

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