Duplicate values in 'backupskip'

[Tom Ryder]

Hello Vim developers; attached is a patch to apply the P_NODUP flag to
the 'backupskip' option to prevent duplicate paths being added to it,
and a test for the same.

--
Tom Ryder <https://sanctum.geek.nz/>

[Bram Moolenaar]

Tom Ryder wrote:

> Hello Vim developers; attached is a patch to apply the P_NODUP flag to
> the 'backupskip' option to prevent duplicate paths being added to it,
> and a test for the same.

I'll include it, thanks!

--
hundred-and-one symptoms of being an internet addict:
159. You get excited whenever discussing your hard drive.

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