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From Rory O'Farrell <>
Subject Re: Files replaced by hashes, let's face it
Date Mon, 12 Mar 2012 22:17:09 GMT
On Mon, 12 Mar 2012 22:47:42 +0100
Hagar Delest <> wrote:

> Hi All,
> We have had a recent discussion in the forum (after another
> case) about the problem where files are replaced with only
> hashes, leading to serious data loss. Is there any plan to
> handle it or at least to double check the save process?
> For the record: usually after a power loss, the opened file is
> wrecked and no data is recoverable. In very rare cases (I've
> seen it twice IIRC), user is able to recover the last version
> from the temporary files. The discussion:
> The post where I've listed more than 90 similar reports in
> forums:
> The issue I'd filed:
> NB: not sure if LibO has inherited this problem too but I guess
> so according to a quick Google search:
> Of course the bug is not reproducible, it happens on several
> OS, with different versions but has appeared clearly end of
> 2008.
> Please remember that this bug is very detrimental to the
> product reputation, leading to a loss of confidence in the
> code. Especially for a very basic feature. Facing say a power
> loss is not usual but the original file should not be processed
> until the new file is correctly written (or its temporary
> version should at least be available for recovery).
> Hagar

I add my voice to Hagar's remarks.  I can remember back in pre
CP/M days, while working in Z80 assembler, running into a similar
problem; its fix necessitated a rethink of  the file saving
protocol.  Of course, I realise that one cannot write bomb-proof
code, but one certainly ought be able to improve the situation
where the last copy of a file is erased or destroyed if the power
fails - a common scenario with less experienced users and laptops.

Rory O'Farrell <>

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