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https://issues.apache.org/jira/browse/LUCENE-6102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Rowe resolved LUCENE-6102.
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Resolution: Not A Problem
> regenerate bug
> --------------
>
> Key: LUCENE-6102
> URL: https://issues.apache.org/jira/browse/LUCENE-6102
> Project: Lucene - Core
> Issue Type: Bug
> Components: general/build
> Affects Versions: 4.10.2
> Environment: PYTHON 2.6
> JDK 1.7.0.45
> ANT 1.9.2
> Reporter: Martin Gainty
> Priority: Major
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> <!--attempt to run python w/o PYTHONHOME and PYTHONPATH defined causes
> regenerate task to fubar and not generate .jflex file -->
> <!-- fix is here -->
> <target name="regenerate" >
> <property name="python.exe" value="%CYGWIN_HOME%/bin/python.exe" />
> <!-- target name="generate-jflex-html-char-entities" -->
> <echo>Running ${python.exe} on htmlentity.py</echo>
> <exec executable="cmd.exe">
> <arg value="/c"/>
> <arg value="pythonit.bat"/>
> </exec>
> <fixcrlf
> file="src/java/org/apache/lucene/analysis/charfilter/HTMLCharacterEntities.jflex"
> encoding="UTF-8"/>
> </target>
> <!--end contents of pythonit.<bat/sh> -->
> <!--this will gen the Impl.java from the .jflex input -->
> <target name="jflex-HTMLCharacterEntities" depends="regenerate">
> <taskdef name="jflex-1.5.1" classname="JFlex.anttask.JFlexTask"
> classpath="%ANT_HOME%/lib"/>
> <echo>Run jflex-HTMLCharacterEntities</echo>
> <!-- run-jflex-and-disable-buffer-expansion
> dir="%LUCENE_HOME%/analysis/common/src/java/org/apache/lucene/analysis/standard"
> name="StandardTokenizerImpl"/ -->
> <property name="dir"
> value="%LUCENE_HOME%/analysis/common/src/java/org/apache/lucene/analysis/standard"
> />
> <property name="name" value="HTMLCharacterEntitiesImpl" />
> <jflex-1.5.1
> file="%LUCENE_HOME%/analysis/common/src/java/org/apache/lucene/charfilter/HTMLCharacterEntities.jflex"
> outdir="%LUCENE_HOME%/analysis/common/src/java/org/apache/lucene/charfilter"
> nobak="off" />
> <!-- /macrodef -->
> </target>
> when I regen'ed HTMLCharacterEntities.jflex I wanted to use jflex to generate
> the HtmlCharacterEntitiesImpl.java file the above target
> jflex-HTMLCharacterEntities will gen that file for you
> Nota Bene; take note of the bat/sh that properly sets PYTHONHOME and
> PYTHONPATH so Python can locate subordinate .pyc components
> I also had to tweak Gerwin Kleins JFlex library from 2003 to take inputFile
> and outputDir parameters
> Erik/Michael: does the original regenerate work for you?
> Martin Gainty 8 Dec 2014
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