[FIXED JENKINS-13329] --debug triggered fresh clones rather than upda…

…tes.

src/main/java/hudson/plugins/mercurial/HgExe.java

@@ -62,6 +62,7 @@
  */
 public class HgExe {
     private final ArgumentListBuilder base;
+    private final ArgumentListBuilder baseNoDebug;
     /**
      * Environment variables to invoke hg with.
      */
@@ -77,6 +78,8 @@ public HgExe(MercurialSCM scm, Launcher launcher, AbstractBuild build, TaskListe
 
     public HgExe(MercurialSCM scm, Launcher launcher, Node node, TaskListener listener, EnvVars env) throws IOException, InterruptedException {
         base = scm.findHgExe(node, listener, true);
+        // XXX might be more efficient to have a single call returning ArgumentListBuilder[2]?
+        baseNoDebug = scm.findHgExe(node, listener, false);
         this.node = node;
         this.env = env;
         this.launcher = launcher;
@@ -89,24 +92,24 @@ private ProcStarter l(ArgumentListBuilder args) {
         return MercurialSCM.launch(launcher).cmds(args).stdout(listener).envs(env);
     }
 
-    private ArgumentListBuilder seed() {
-        return base.clone();
+    private ArgumentListBuilder seed(boolean allowDebug) {
+        return (allowDebug ? base : baseNoDebug).clone();
     }
 
     public ProcStarter pull() {
         return run("pull");
     }
 
     public ProcStarter clone(String... args) {
-        return l(seed().add("clone").add(args));
+        return l(seed(true).add("clone").add(args));
     }
 
     public ProcStarter bundleAll(String file) {
         return run("bundle","--all",file);
     }
 
     public ProcStarter bundle(Collection<String> bases, String file) {
-        ArgumentListBuilder args = seed().add("bundle");
+        ArgumentListBuilder args = seed(true).add("bundle");
         for (String head : bases) {
             args.add("--base", head);
         }
@@ -130,11 +133,11 @@ public ProcStarter cleanAll() {
      * Runs arbitrary command.
      */
     public ProcStarter run(String... args) {
-        return l(seed().add(args));
+        return l(seed(true).add(args));
     }
 
     public ProcStarter run(ArgumentListBuilder args) {
-        return l(seed().add(args.toCommandArray()));
+        return l(seed(true).add(args.toCommandArray()));
     }
 
     /**
@@ -207,7 +210,7 @@ public String config(FilePath repository, String name) throws IOException, Inter
      */
     public String popen(FilePath repository, TaskListener listener, boolean useTimeout, ArgumentListBuilder args)
             throws IOException, InterruptedException {
-        args = seed().add(args.toCommandArray());
+        args = seed(false).add(args.toCommandArray());
 
         ByteArrayOutputStream rev = new ByteArrayOutputStream();
         if (MercurialSCM.joinWithPossibleTimeout(l(args).pwd(repository).stdout(rev), useTimeout, listener) == 0) {
@@ -237,7 +240,7 @@ synchronized static Capability get(HgExe hg) {
                 MAP.put(hg.node, m);
             }
 
-            List<String> hgConfig = hg.base.toList();
+            List<String> hgConfig = hg.seed(false).toList();
             Capability cap = m.get(hgConfig);
             if (cap==null)
                 m.put(hgConfig,cap = new Capability());

src/test/java/hudson/plugins/mercurial/MercurialSCMTest.java

@@ -41,16 +41,20 @@ void setUp() throws Exception {
         repo = createTmpDir();
     }
 
+    @Bug(13329)
     public void testBasicOps() throws Exception {
         FreeStyleProject p = createFreeStyleProject();
         p.setScm(new MercurialSCM(hgInstallation, repo.getPath(), null, null,
                 null, null, false));
 
         hg(repo, "init");
         touchAndCommit(repo, "a");
-        buildAndCheck(p, "a"); // this tests the clone op
+        String log = buildAndCheck(p, "a");
+        assertTrue(log, log.contains(" clone --"));
         touchAndCommit(repo, "b");
-        buildAndCheck(p, "b"); // this tests the update op
+        log = buildAndCheck(p, "b");
+        assertTrue(log, log.contains(" update --"));
+        assertFalse(log, log.contains(" clone --"));
     }
 
     @Bug(4281)