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so we are going to try and debug some non-trivial writer back and we are going to do this by recording the execution of writer um where we first reproduce the bug and uh this is some video which iamp;#39;ve recorded a couple of months ago and now iamp;#39;m trying to remember what was going on so to reproduce the bug we select the entire document and then we copy the document and paste it while everything is still selected which will replace the entire content and then we push the unknown button and itamp;#39;s going to crash so now we use the r replay command to replay what we have recorded and this puts us at the gdb prompt and now we start to set a few well since it was crashing in undo we set a breakpoint on when anu actions are created in writer and now we um just continue the replay which is going to take a while by the way iamp;#39;ve cut out uh quite a few chunks of the video where nothing interesting was happening so um yeah this sort of thing probably took longer and now