Unrecognized character exception when merging file

[herve-t]

maven-minify-plugin 1.7.6
angularJS used on client side.

Hello,
I am trying to minify CSS and JS files.
If I use <skipMerge>true</skipMerge> my Maven build ends normally, files are correctly minified, one by one.

Now I would like to merge all the files in a single .js and .css files, but Maven build ends with ERROR.

Please find my configuration below

<charset>UTF-8</charset>						<webappSourceDir>${basedir}/src/main/resources/static</webappSourceDir>
 							<cssSourceDir>css</cssSourceDir>
          					<cssFinalFile>style.css</cssFinalFile>
							<cssSourceIncludes>
								<cssSourceInclude>**/*.css</cssSourceInclude>
							</cssSourceIncludes>
							<cssSourceExcludes>
								<cssSourceExclude>**/*.min.css</cssSourceExclude>
							</cssSourceExcludes>
							
							<jsSourceDir>js</jsSourceDir>
							<jsSourceIncludes>
								<jsSourceInclude>**/*.js</jsSourceInclude>
							</jsSourceIncludes>
							<jsSourceExcludes>
								<jsSourceExclude>**/*.min.js</jsSourceExclude>
								<jsSourceExclude>**/*angular*.js</jsSourceExclude>
							</jsSourceExcludes>
						<jsFinalFile>script.js</jsFinalFile>
				<webappTargetDir>${project.build.directory}/classes/static</webappTargetDir>
							<jsEngine>CLOSURE</jsEngine>
				        	  <closureLanguage>ECMASCRIPT5</closureLanguage>
          					<closureAngularPass>true</closureAngularPass>
							<!-- <skipMerge>true</skipMerge> -->
							<nosuffix>true</nosuffix>
							<verbose>true</verbose>
						</configuration>


Find below Maven error occuring  as soon as I want to merge the minified files.
Only JS files seems to be implied. 

`[ERROR] Failed to execute goal com.samaxes.maven:minify-maven-plugin:1.7.6:minify (default-minify) on project selfcare: java.lang.IllegalArgumentException: com.google.common.io.BaseEncoding$DecodingException: Unrecognized character: = -> 
[Help 1]                                                                                                                                                                                                                                      
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.samaxes.maven:minify-maven-plugin:1.7.6:minify (default-minify) on project selfcare: java.lang.IllegalArgumentException: com.google.common.io.BaseEncoding$
DecodingException: Unrecognized character: =                                                                                                                                                                                                  
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)                                                                                                                                                    
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)                                                                                                                                                    
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)                                                                                                                                                    
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)                                                                                                                           
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)                                                                                                                            
        at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)                                                                                                              
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)                                                                                                                                            
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)                                                                                                                                                                     
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)                                                                                                                                                                     
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)                                                                                                                                                                       
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)                                                                                                                                                                           
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)                                                                                                                                                                            
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)                                                                                                                                                                              
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)                                                                                                                                                                        
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)                                                                                                                                                      
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)                                                                                                                                              
        at java.lang.reflect.Method.invoke(Method.java:498)                                                                                                                                                                                   
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)                                                                                                                                                
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)                                                                                                                                                        
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)                                                                                                                                              
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)                                                                                                                                                          
Caused by: org.apache.maven.plugin.MojoExecutionException: java.lang.IllegalArgumentException: com.google.common.io.BaseEncoding$DecodingException: Unrecognized character: =                                                                 
        at com.samaxes.maven.minify.plugin.MinifyMojo.execute(MinifyMojo.java:516)                                                                                                                                                            
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)                                                                                                                                  
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)                                                                                                                                                    
        ... 20 more                                                                                                                                                                                                                           
Caused by: java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: com.google.common.io.BaseEncoding$DecodingException: Unrecognized character: =                                                                        
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)                                                                                                                                                                        
        at java.util.concurrent.FutureTask.get(FutureTask.java:192)                                                                                                                                                                           
        at com.samaxes.maven.minify.plugin.MinifyMojo.execute(MinifyMojo.java:514)                                                                                                                                                            
        ... 22 more                                                                                                                                                                                                                                                                                                                                                                                                                     
`
I did not find anything interesting so far.Any help is welcome.

[georgy7]

Hi, @herve-t.
Please, try to debug ProcessJSFilesTask.minify during the build.