I think it's better not to mark messages as dirty when they're not really

dirty. This way, index files are only written when they should, and not
everytime you leave a folder (as was happening before this patch).

svn path=/trunk/kdenetwork/kmail/; revision=75997

kmmsgbase.cpp

@@ -74,6 +74,7 @@ bool KMMsgBase::isMessage(void) const
 //-----------------------------------------------------------------------------
 void KMMsgBase::setStatus(const KMMsgStatus aStatus)
 {
+  if (mStatus == aStatus) return;
   if (mParent) mParent->msgStatusChanged( mStatus, aStatus );
   mStatus = aStatus;
   mDirty = TRUE;
@@ -156,6 +157,7 @@ const char* KMMsgBase::statusToStr(KMMsgStatus aStatus)
 //-----------------------------------------------------------------------------
 void KMMsgBase::setDate(time_t aUnixTime)
 {
+  if (mDate == aUnixTime) return;
   mDate  = aUnixTime;
   mDirty = TRUE;
 }