splatch commented on a change in pull request #164: [MNG-6411] Improve 
readability of project list for resume option.
URL: https://github.com/apache/maven/pull/164#discussion_r187800007
 
 

 ##########
 File path: 
maven-core/src/main/java/org/apache/maven/graph/DefaultGraphBuilder.java
 ##########
 @@ -311,13 +311,29 @@ else if ( StringUtils.isNotEmpty( 
request.getMakeBehavior() ) )
             if ( !resumed )
             {
                 throw new MavenExecutionException( "Could not find project to 
resume reactor build from: " + selector
-                    + " vs " + projects, request.getPom() );
+                    + " vs " + formatProjects( projects ), request.getPom() );
             }
         }
 
         return result;
     }
 
+    private String formatProjects( List<MavenProject> projects )
+    {
+        StringBuilder projectNames = new StringBuilder();
+        for ( int index = 0, size = projects.size(); index < size; index++ )
+        {
+            MavenProject project = projects.get( index );
 
 Review comment:
   It makes sense to use commons only if they are already part of core 
dependencies.

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