Update fails with long file name

[Matt Mackall]

On Mon, 2015-09-28 at 16:18 -0500, Benjamin Fritz wrote:
> I'm not sure whether the problem is in Mercurial, or in hgsubversion, so
> please let me know if this is a bad place to report the issue.
> 
> I cloned a SVN repository by creating a new (empty) hg repository, then
> enabling the hgsubversion extension, and doing "hg pull" with the URL of my
> SVN repository.
> 
> I used TortoiseSVN for all of the above, so I don't have the exact command
> line.
> 
> The pull worked fine but the update step failed as follows:
> 
> E:\Project_Files\XXX-hg\Verification/XXX_config/Error_Config/XXXXXXXXX/XXXXXXXXXXXXXXXXXX0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678.csv

Programs that use the standard C interfaces have this limitation in
Windows (including cmd.exe and friends). Mercurial intentionally remains
in this set so that it doesn't create problematic files that not all
programs (such as del!) can handle.

We'll fix this after Windows itself (including its core utilities)
finally gets its act together.

-- 
Mathematics is the supreme nostalgia of our time.