modified to suggest a likely name.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@1161 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/Project.java

@@ -2,6 +2,7 @@ package hudson.model;
 
 import hudson.FilePath;
 import hudson.Launcher;
+import hudson.util.EditDistance;
 import hudson.model.Descriptor.FormException;
 import hudson.model.Fingerprint.RangeSet;
 import hudson.model.RunMap.Constructor;
@@ -728,6 +729,19 @@ public class Project extends Job<Project,Build> {
         return r;
     }
 
+    /**
+     * Finds a {@link Project} that has the name closest to the given name.
+     */
+    public static Project findNearest(String name) {
+        List<Project> projects = Hudson.getInstance().getProjects();
+        String[] names = new String[projects.size()];
+        for( int i=0; i<projects.size(); i++ )
+            names[i] = projects.get(i).getName();
+
+        String nearest = EditDistance.findNearest(name, names);
+        return (Project)Hudson.getInstance().getJob(nearest);
+    }
+
     private static final Comparator<Integer> REVERSE_INTEGER_COMPARATOR = new Comparator<Integer>() {
         public int compare(Integer o1, Integer o2) {
             return o2-o1;

core/src/main/java/hudson/tasks/BuildTrigger.java

@@ -123,7 +123,8 @@ public class BuildTrigger extends Publisher {
                         String projectName = tokens.nextToken().trim();
                         Job job = Hudson.getInstance().getJob(projectName);
                         if(job==null) {
-                            error("No such project: "+projectName);
+                            error("No such project '"+projectName+"'. Did you mean '"+
+                                Project.findNearest(projectName).getName()+"'?");
                             return;
                         }
                         if(!(job instanceof Project)) {