escape_once

Escapes a string without changing existing escaped entities. Notice the difference between escape and escape_once in their output:

Input

{{ "1 < 2 & 3" | escape_once }}
{{ "1 &lt; 2 &amp; 3" | escape }}
{{ "1 &lt; 2 &amp; 3" | escape_once }}

Output

1 &lt; 2 &amp; 3
1 &amp;lt; 2 &amp;amp; 3
1 &lt; 2 &amp; 3