eclipse incremental build support

[belerweb]

I want eclipse build coffeescript auto & incremental. So I add following config:

<pluginExecution>
    <pluginExecutionFilter>
        <groupId>com.theoryinpractise</groupId>
        <artifactId>coffee-maven-plugin</artifactId>
        <versionRange>[1.4.7,)</versionRange>
        <goals>
            <goal>coffee</goal>
        </goals>
    </pluginExecutionFilter>
    <action>
        <execute>
            <runOnIncremental>true</runOnIncremental>
        </execute>
    </action>
</pluginExecution>

It works, but when I save a file, even not a .coffee file, then all coffee files are compiled again(It takes a long time. During the time, eclipse always show "Build workspace (xx%)").

So I want coffee-maven-plugin support incremental build. If a .coffee file is not changed and the compiled .js file exist, then skip the compile.

I am using lesscss-maven-plugin too, it works fine, then source code is here(https://github.com/marceloverdijk/lesscss-maven-plugin/blob/master/src/main/java/org/lesscss/mojo/CompileMojo.java).

Thanks very much.