IDEA-152063 IntelliJ fails to use encoding from project settings for files containing breakpoints when project is opened: do not send event on encoding reset

platform/core-api/src/com/intellij/openapi/vfs/VirtualFile.java

@@ -523,6 +523,10 @@ public abstract class VirtualFile extends UserDataHolderBase implements Modifica
   }
 
   public void setCharset(final Charset charset, @Nullable Runnable whenChanged) {
+    setCharset(charset, whenChanged, false);
+  }
+
+  public void setCharset(final Charset charset, @Nullable Runnable whenChanged, boolean suppressEvents) {
     final Charset old = getStoredCharset();
     storeCharset(charset);
     if (Comparing.equal(charset, old)) return;
@@ -535,7 +539,9 @@ public abstract class VirtualFile extends UserDataHolderBase implements Modifica
 
     if (old != null) { //do not send on detect
       if (whenChanged != null) whenChanged.run();
-      VirtualFileManager.getInstance().notifyPropertyChanged(this, PROP_ENCODING, old, charset);
+      if (!suppressEvents) {
+        VirtualFileManager.getInstance().notifyPropertyChanged(this, PROP_ENCODING, old, charset);
+      }
     }
   }
 

platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/FileDocumentManagerImpl.java

@@ -638,7 +638,7 @@ public class FileDocumentManagerImpl extends FileDocumentManager implements Virt
           documentEx.setReadOnly(false);
           LoadTextUtil.setCharsetWasDetectedFromBytes(file, null);
           file.setBOM(null); // reset BOM in case we had one and the external change stripped it away
-          file.setCharset(null);
+          file.setCharset(null, null, true);
           if (!isBinaryWithoutDecompiler(file)) {
             documentEx.replaceText(LoadTextUtil.loadText(file), file.getModificationStamp());
             documentEx.setReadOnly(!wasWritable);