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I was using emacs (XEmacs actually) and using the scratch buffer to experiment with regular expressions for a regex-replace operation that was giving me trouble. That has nothing to do with the problem, just setting the context.

A power failure caused me to have to reboot my computer and restart emacs. Because scratch can't be saved without explicitly copying it to a file, it's gone.

Is there any way to recover the previous (before the power failure) contents of scratch and, if so, how do I do it?

I'm not looking for suggestions for how to prevent this from being a problem in the future---I've figured that out. I just want restore the scratch contents that I just lost, if possible.

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Buffers that are not saved to a file are just kept in memory. The contents of memory are lost on a reboot¹, so these buffers are gone. If you had a core dump, or a copy of your memory (such as you might get if you suspended your computer to disk), then perhaps you could recover it. Otherwise, no.

¹ Technically memory can remain readable for a few minutes without power if you freeze the ram using propellant from a can of compressed air, liquid nitrogen, or some other means. But you’re probably not set up for that on short notice.

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  • That's what I assumed but I thought there might be a chance. Thanks for your answer.
    – Byron Dom
    Oct 28, 2021 at 3:00
  • @ByronDom if this answers your question then don't forget to accept the answer
    – Tom
    Oct 28, 2021 at 7:32
  • Tom. How do I accept an answer? I don't see a way. Maybe I already did without realizing it (?).
    – Byron Dom
    Oct 28, 2021 at 18:11

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