Am 29.11.2009 18:16, schrieb Michael Scheper:
> G'day everyone,
>
> I've been fruitlessly searching for documentation on the format of vim
> swap files. Does anybody have a link for that? All I want is a way to
> tell whether the swap file is for a file that's been modified. It
> seems that most of the time, swap files for modified files start with
> an uppercase 'U', but this isn't an entirely reliable indicator.
>
> Thanks,
> MS.
My swap files start with "b0VIM 7.2". When I edit a file for which a
swap file exists, I get
E325: ATTENTION
Found a swap file ...
dated ...
file name ...
modified: YES <-- (!)
...
So Vim informs me about the last 'modified' state (= state just before
the session was interrupted).
You are right about the 'U': Vim's source code confirms that a magical
'U' character (0x55) at position 0x000003EF in the swap file indicates
the 'modified' state (0x00 otherwise). (see memfile.c, struct block0)
--
Andy
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