Phing: Target to fork _s (underscores) theme with new name

target-fork-underscores.xml

<target name="fork-underscores">
	<input propertyname="theme.name">What do you want to name your _s theme (eg mythemename)?</input>
	<copy todir="wp-content/themes/${theme.name}">
		<fileset dir="wp-content/themes/_s">
			<exclude name=".git" />
			<exclude name=".git/*" />
		</fileset>
		<filterchain>
			<replaceregexp>
				<regexp pattern="'_s'" replace="'${theme.name}'" ignoreCase="true"/>
				<regexp pattern="_s_" replace="${theme.name}_" ignoreCase="true"/>
				<regexp pattern=" _s" replace=" ${theme.name}" ignoreCase="true"/>
			</replaceregexp>
		</filterchain>
	</copy>
</target>

Ignores .git dir by default. Remove <exclude /> elements if you don't want that.