Maven 4 profile activation by <condition> issues

[RalfNaujokat]

Affected version

rc5

Bug description

I found some issues in the <condition> syntax.
Maybe there is room for improvements.

Please have a look at the comments in the example pom.xml

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.1.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.1.0 http://maven.apache.org/xsd/maven-4.1.0.xsd">
	<modelVersion>4.1.0</modelVersion>


	<groupId>de.ralfn.tmp</groupId>
	<artifactId>maven4-profile-activation-by-condition-tester</artifactId>
	<version>1.0-SNAPSHOT</version>
	<packaging>pom</packaging>


	<properties>
		<root>true</root>
	</properties>


	<profiles>

		<!-- working -->

		<profile>
			<id>profile-1</id>
			<activation>
				<condition>exists( '.profile-1' )</condition>
			</activation>
		</profile>

		<profile>
			<id>profile-1b</id>
			<activation>
				<condition>
					exists( '.profile-1' )
				</condition>
			</activation>
		</profile>

		<!-- working, but kind of ugly -->

		<profile>
			<id>profile-2</id>
			<activation>
				<condition>exists( '.profile-2' ) &amp;&amp; missing( '.profile-1' )</condition>
				<!--
				Why not using something like this? (may be just as an optional version instead of the '&&' operator)
				<condition>exists( '.profile-2' ) AND missing( '.profile-1' )</condition>

				This could be nice, too., but maybe is somewhat harder to implement. We have a not(..) function anyway.
				<condition> and( exists( '.profile-2' ), missing( '.profile-1' ) ) </condition>
				-->
			</activation>
		</profile>

		<!-- working, but still ugly -->

		<profile>
			<id>profile-2b</id>
			<activation>
				<condition><![CDATA[exists( '.profile-2' ) && missing( '.profile-1' )]]></condition>
			</activation>
		</profile>

		<!-- working workaround to get it a bit cleaner -->

		<profile>
			<id>profile-2c</id>
			<activation>
				<condition><![CDATA[
					exists( '.profile-2' ) && missing( '.profile-1' ) && missing( '.profile-0' )
				]]></condition>
			</activation>
		</profile>

		<!-- not working, just because of the line break -->

		<profile>
			<id>bad-profile-2d</id>
			<activation>
				<condition><![CDATA[
					exists( '.profile-2' )
					&& missing( '.profile-1' ) && missing( '.profile-0' )
				]]></condition>
			</activation>
		</profile>

	</profiles>

</project>