Pastable version of Simple Text Replacement

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            <pre class="sunburst"><span style="color:#E28964;">def</span> <span style="color:#89BDFF;">replace_keywords</span>(<span style="color:#3E87E3;">keyword_hash<span style="color:#3E87E3;">,</span> text_to_parse</span>)
  keyword_hash.<span style="color:#89BDFF;">each</span> <span style="color:#E28964;">do </span>|<span style="color:#3E87E3;">key</span>, <span style="color:#3E87E3;">value</span>|
    new_key <span style="color:#E28964;">=</span> key.<span style="color:#89BDFF;">dup</span>
<span style="color:#AEAEAE;font-style:italic;">    <span style="color:#AEAEAE;font-style:italic;">#</span> escape the closing brace for insertion into regexp</span>
    new_key.<span style="color:#89BDFF;">sub!</span>(<span style="color:#E9C062;"><span style="color:#E9C062;">/</span></span><span style="color:#E9C062;"><span style="color:#CF7D34;">\}</span></span><span style="color:#E9C062;"><span style="color:#E9C062;">/</span></span>, <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span><span style="color:#DDF2A4;">\}</span><span style="color:#65B042;">&quot;</span></span>)
    <span style="color:#89BDFF;">eval</span>(<span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>text_to_parse.gsub!(/<span style="color:#DDF2A4;">\\</span><span style="color:#65B042;">&quot;</span></span> <span style="color:#E28964;">+</span> new_key <span style="color:#E28964;">+</span> <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>/, '<span style="color:#65B042;">&quot;</span></span> <span style="color:#E28964;">+</span> value <span style="color:#E28964;">+</span> <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>')<span style="color:#65B042;">&quot;</span></span>)
  <span style="color:#E28964;">end</span>
<span style="color:#E28964;">end</span>

my_hash <span style="color:#E28964;">=</span> { <span style="color:#65B042;"><span style="color:#65B042;">'</span>{city}<span style="color:#65B042;">'</span></span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">'</span>Chicago<span style="color:#65B042;">'</span></span>, <span style="color:#65B042;"><span style="color:#65B042;">'</span>{state}<span style="color:#65B042;">'</span></span> =&gt; <span style="color:#65B042;"><span style="color:#65B042;">'</span>Illinois<span style="color:#65B042;">'</span></span> }
my_text <span style="color:#E28964;">=</span> <span style="color:#65B042;"><span style="color:#65B042;">&quot;</span>Welcome to {city}, {state}<span style="color:#65B042;">&quot;</span></span>

<span style="color:#89BDFF;">replace_keywords</span>( my_hash, my_text )
<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">#</span> returns 'Welcome to Chicago, Illinois'</span>
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