* limitations under the License.
 */
package org.gradle.api.java.archives;

/**
 * Details of a value being merged from two different manifests.
 */
public interface ManifestMergeDetails {
    /**
     * Returns the section this merge details belongs to.
     */
    String getSection();

    /**
     * Returns the key that is to be merged.
     */
    String getKey();

    /**

     * {@link org.gradle.api.java.archives.ManifestMergeDetails} as its parameter. Actions are executed
     * in the order added.
     *
     * @param mergeAction A merge action to be executed.
     * @return this
     */
    ManifestMergeSpec eachEntry(Action<? super ManifestMergeDetails> mergeAction);

    /**

import java.util.Set;

public class DefaultManifestMergeSpec implements ManifestMergeSpec {
    List<Object> mergePaths = new ArrayList<Object>();
    private final List<Action<? super ManifestMergeDetails>> actions = new ArrayList<Action<? super ManifestMergeDetails>>();
    private String contentCharset = DefaultManifest.DEFAULT_CONTENT_CHARSET;

    @Override
    public String getContentCharset() {
        return this.contentCharset;
    }

 * limitations under the License.
 */
package org.gradle.api.java.archives.internal;

import org.gradle.api.java.archives.ManifestMergeDetails;

public class DefaultManifestMergeDetails implements ManifestMergeDetails {
    private String section;
    private String key;
    private String baseValue;
    private String mergeValue;
    private String value;
    private boolean excluded;

 */
package org.gradle.api.java.archives.internal

import org.gradle.api.Action
import org.gradle.api.internal.file.FileResolver
import org.gradle.api.java.archives.Manifest
import org.gradle.api.java.archives.ManifestMergeDetails
import org.gradle.test.fixtures.file.TestFile
import org.gradle.test.fixtures.file.TestNameTestDirectoryProvider
import org.junit.Rule
import spock.lang.Specification

        attributes("key1" to "value1")
        from(sharedManifest, "src/config/basemanifest.txt")
        from(listOf("src/config/javabasemanifest.txt", "src/config/libbasemanifest.txt")) {
            eachEntry(Action<ManifestMergeDetails> {
                if (baseValue != mergeValue) {
                    value = baseValue
                }
                if (key == "foo") {
                    exclude()
                }
            })

Method <org.gradle.api.java.archives.ManifestMergeDetails.getBaseValue()> does not have raw return type assignable to org.gradle.api.provider.Provider in (ManifestMergeDetails.java:0)
Method <org.gradle.api.java.archives.ManifestMergeDetails.getKey()> does not have raw return type assignable to org.gradle.api.provider.Provider in (ManifestMergeDetails.java:0)

manifest both define values for the same key, the merged manifest wins by default. You can fully customize the merge behavior by adding `eachEntry` actions in which you have access to a link:{javadocPath}/org/gradle/api/java/archives/ManifestMergeDetails.html[ManifestMergeDetails] instance for each entry of the resulting manifest. Note that the merge is done lazily, either when generating the JAR or when `Manifest.writeTo()` or `Manifest.getEffectiveManifest()` are called.

Speaking of `writeTo()`,...