From 7eee4fd1026355a3e420bf02a7578eee6826bc97 Mon Sep 17 00:00:00 2001
From: Robert Muir <rmuir@apache.org>
Date: Sat, 3 Oct 2020 12:29:14 -0400
Subject: [PATCH] LUCENE-9557: regeneration should use python3, not python2

python2 will change the DFA, but using python3 re-generates the sources
as they exist today. plus, we don't want to depend on EOL python2.
---
 gradle/generation/jflex.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gradle/generation/jflex.gradle b/gradle/generation/jflex.gradle
index 57c80697ae3..f6e83510b43 100644
--- a/gradle/generation/jflex.gradle
+++ b/gradle/generation/jflex.gradle
@@ -149,7 +149,7 @@ configure(project(":lucene:analysis:common")) {
       def target = file('src/java/org/apache/lucene/analysis/charfilter/HTMLCharacterEntities.jflex')
       target.withOutputStream { output ->
         project.exec {
-          executable = project.externalTool("python2")
+          executable = project.externalTool("python3")
           workingDir = target.parentFile
           standardOutput = output
           args += [