Ruby on Rails latest stable (v4.0.2) - 1 note - Class: OutputSafetyHelper
safe_join(array, sep=$,) public

This method returns a html safe string similar to what Array#join would return. All items in the array, including the supplied separator, are html escaped unless they are html safe, and the returned string is marked as html safe.

safe_join(["<p>foo</p>".html_safe, "<p>bar</p>"], "<br />")
# => "<p>foo</p><br /><p>bar</p>"

safe_join(["<p>foo</p>".html_safe, "<p>bar</p>".html_safe], "<br />".html_safe)
# => "<p>foo</p><br /><p>bar</p>"
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April 24, 2014 - (<= v4.0.2)
0 thanks

First example's output is incorrect

Everything except the initially html_safe input should be escaped in the output.

The output of the first example should be:

# => "<p>foo</p>&lt;br /&gt;&lt;p&gt;bar&lt;/p&gt;"