{#example_1}
{!-- Available filters include perl-style regex (regular expressions).
  -- Let the obfuscation begin!
  --
  -- The standard caveats apply, regex is powerful but it is often very
  -- difficult for your fellow humans (and even for yourself ten minutes
  -- on) to read your regex code.
  --
  -- Alternate section markers are not supported.  You must use the
  -- standard s/find/replace/[flags] syntax and not exotic variations
  -- like s{find}{replace}[flags] or s|find|replace|[flags] or
  -- s:find:replace:[flags] etc. etc.
  --}
Please welcome {% $names|s/(J)(im and )(D)(ella)/$3$2$1$4/ %}.
{#}

Theme theme = new Theme("examples");

// Fetch template from this file: themes/examples/regex.chtml
// Inside that file there is a template "snippet" named #example_1
Chunk html = theme.makeChunk("regex#example_1");

html.set("names", "Jim and Della");

html.render( out );

{#example_2}
{!--
  -- Curly braces and pipes are safe to use *inside* your regex and
  -- carry the standard regex meanings.
  --
  -- For example, this is valid:
  --  {% $tag|s/don't lo{1,2}se your (socks|shoes)/don't lose your $1/ %}
  -- and the template engine won't mistake the first close-brace for
  -- the end of the tag, nor will it mistake the socks|shoes pipe as
  -- the start of a new filter.
  --}
<p>
{% $sentence_a|s/don't lo{1,2}se your (socks|shoes)/don't lose your $1/ %}
</p>

<p>
{% $sentence_b|s/don't lo{1,2}se your (socks|shoes)/don't lose your $1/ %}
</p>
{#}

Theme theme = new Theme("examples");

// Fetch template from this file: themes/examples/regex.chtml
// Inside that file there is a template "snippet" named #example_2
Chunk html = theme.makeChunk("regex#example_2");

html.set("sentence_a", "Mama always told me, don't loose your socks in the river.");
html.set("sentence_b", "Papa always told me, don't lose your shoes in the mulcher.");

html.render( out );