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<h2 class="title"><a id="analysis-lowercase-tokenizer"></a>Lowercase Tokenizer<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/2.4/docs/reference/analysis/tokenizers/lowercase-tokenizer.asciidoc">edit</a></h2>
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<p>A tokenizer of type <code class="literal">lowercase</code> that performs the function of
<a class="xref" href="analysis-letter-tokenizer.html" title="Letter Tokenizer">Letter
Tokenizer</a> and
<a class="xref" href="analysis-lowercase-tokenfilter.html" title="Lowercase Token Filter">Lower
Case Token Filter</a> together. It divides text at non-letters and converts
them to lower case. While it is functionally equivalent to the
combination of
<a class="xref" href="analysis-letter-tokenizer.html" title="Letter Tokenizer">Letter
Tokenizer</a> and
<a class="xref" href="analysis-lowercase-tokenfilter.html" title="Lowercase Token Filter">Lower
Case Token Filter</a>, there is a performance advantage to doing the two
tasks at once, hence this (redundant) implementation.</p>
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