comparison mainwindow.cpp @ 305:7708149d252a

Avoid exception when incremental log is called for in a situation where the heads have not actually been determined yet -- we could end up adding all existing history as an incremental update and getting a duplicate changeset error

     m_runner->requestAction(HgAction(ACT_LOG, m_workFolderPath, params));
 }
 
 void MainWindow::hgLogIncremental(QStringList prune)
 {
+    // Sometimes we can be called with prune empty -- it represents
+    // the current heads, but if we have none already and for some
+    // reason are being prompted for an incremental update, we may run
+    // into trouble.  In that case, make this a full log instead
+
+    if (prune.empty()) {
+        hgLog();
+        return;
+    }
+
     QStringList params;
     params << "log";
 
     foreach (QString p, prune) {
         params << "--prune" << Changeset::hashOf(p);

     return ret;
 }
 
 void MainWindow::clearState()
 {
+    DEBUG << "MainWindow::clearState" << endl;
     foreach (Changeset *cs, m_currentParents) delete cs;
     m_currentParents.clear();
     foreach (Changeset *cs, m_currentHeads) delete cs;
     m_currentHeads.clear();
     m_currentBranch = "";

         oldHeadIds = Changeset::getIds(m_currentHeads);
         Changesets newHeads = Changeset::parseChangesets(output);
         QStringList newHeadIds = Changeset::getIds(newHeads);
         if (oldHeadIds != newHeadIds) {
             DEBUG << "Heads changed, will prompt an incremental log if appropriate" << endl;
+            DEBUG << "Old heads: " << oldHeadIds.join(",") << endl;
+            DEBUG << "New heads: " << newHeadIds.join(",") << endl;
             headsChanged = true;
             foreach (Changeset *cs, m_currentHeads) delete cs;
             m_currentHeads = newHeads;
         }
     }