Multiple spaces in plugin parameter are reduced to 1 during prepare

[nielsbasjes]

Affected version

3.3.1

Bug description

I have a project where I have the antrun plugin generate a file.
One of the configuration parameters in that antrun is this:
<pathconvert targetos="unix" pathsep="&quot;,&#xD; &quot;" property="my-file-list" refid="packagedRules">

The multiple spaces in the pathsep are needed as shown.
After doing a mvn release:prepare not only the version in the pom.xml has been updated but this line has been changed to where the multiple spaces have been replaced by a single space.

[nielsbasjes]

Reproduction:

• Put this pom.xml in an empty directory. pom.xml
• git init .
• git commit -m"Initial" pom.xml
• mvn release:prepare -B
• git diff HEAD~2 HEAD

diff --git a/pom.xml b/pom.xml
index 9a974b5..2d54073 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
 
   <artifactId>spaces-bug</artifactId>
   <groupId>nl.basjes.bugreport</groupId>
-  <version>0.0.0-SNAPSHOT</version>
+  <version>0.0.1-SNAPSHOT</version>
 
   <properties>
     <target.java.version>17</target.java.version>
@@ -44,7 +44,7 @@
             <configuration>
               <target>
                 <fileset id="packagedRules" dir="src/main/resources/UserAgents/" />
-                <pathconvert targetos="unix" pathsep="&quot;,&#xD;        &quot;" property="my-file-list" refid="packagedRules">
+                <pathconvert targetos="unix" pathsep="&quot;,&#xD; &quot;" property="my-file-list" refid="packagedRules">
                   <map from="${project.basedir}/src/main/resources/" to="" />
                 </pathconvert>
                 <!--suppress MavenModelInspection -->

[nielsbasjes]

Simpler reproduction pom.xml.
Key here is that sequences of spaces in attributes of xml tags are reduced to a single one.

<?xml version="1.0"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <artifactId>spaces-bug</artifactId>
  <groupId>nl.basjes.bugreport</groupId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-release-plugin</artifactId>
        <version>3.3.1</version>
        <configuration>
          <scmReleaseCommitComment noSuchFlag="Some    thing">Some    thing</scmReleaseCommitComment>
        </configuration>
      </plugin>
    </plugins>

  </build>

  <developers />

  <scm>
    <developerConnection>scm:git:file:///${project.basedir}</developerConnection>
    <tag>HEAD</tag>
  </scm>
</project>

After the mvn release:prepare -B the diff shows this:

@@ -13,7 +13,7 @@
        <artifactId>maven-release-plugin</artifactId>
         <version>3.3.1</version>
         <configuration>
-          <scmReleaseCommitComment noSuchFlag="Some    thing">Some    thing</scmReleaseCommitComment>
+          <scmReleaseCommitComment noSuchFlag="Some thing">Some    thing</scmReleaseCommitComment>
         </configuration>
       </plugin>
     </plugins>