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Article contents:== Outdated egg! This is an egg for CHICKEN 4, the unsupported old release. You're almost certainly looking for [[/eggref/5/stemmer|the CHICKEN 5 version of this egg]], if it exists. If it does not exist, there may be equivalent functionality provided by another egg; have a look at the [[https://wiki.call-cc.org/chicken-projects/egg-index-5.html|egg index]]. Otherwise, please consider porting this egg to the current version of CHICKEN. [[tags: egg]] == stemmer [[toc:]] === Description Bindings for the [[http://snowball.tartarus.org/|Snowball project's]] libstemmer. It implements the Porter stemmer algorithm and is in fact written by Dr Martin Porter himself making the implementation correct by defintion! === Author [[/users/moritz-heidkamp|Moritz Heidkamp]] === Requirements You need libstemmer itself as well as its headers to be able to install this egg. === Documentation <procedure>(available-stemmers)</procedure> Returns a list of symbols identifying the available language stemmers. <procedure>(make-stemmer language #!optional encoding)</procedure> Returns a stemmer for the given {{language}} which must be a symbol contained in the list returned by {{available-stemmers}}. In addition an {{encoding}} string may be given. The current version of libstemmer supports {{"UTF_8"}}, {{"ISO_8859_1"}}, {{"CP850"}} and {{"KOI8_R"}}. Since strings in Chicken are UTF-8 encoded, the default is "UTF_8". <procedure>(stem stemmer word)</procedure> Returns the stem of the given {{word}} according to the language algorithm given as {{stemmer}} which is a stemmer object as returned by {{make-stemmer}}. Note that this function isn't thread safe, so you either have to appropriately lock it or make sure that stemmer objects are thread local. === Example <enscript language="scheme"> (use stemmer) (define german (make-stemmer 'german)) (stem german "Häuser") ; => "Haus" </enscript> === License Copyright (c) 2011-2012, Moritz Heidkamp All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Description of your changes:

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