When an UNC-style path is passed into openTempFile, the returned file
starts with that same style of path. Which can cause problems, eg piping
that filename to git failed. So, convert the output filename to be
relative to the input temp directory.
Test suite failure looks like this:
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
fatal: could not open '\\?\C:\Users\appveyor\AppData\Local\Temp\1\hash-cc81b41d-dfda-4ae8-904b-b531742443cc' for reading: No such file or directory
git-annex: fd:4: Data.ByteString.hGetLine: end of file
git-annex: user error (git ["--git-dir=.git","--work-tree=.","--literal-pathspecs","hash-object","-w","--no-filters","--stdin-paths"] exited 128)
This is apparently in Git.HashObject, and probably in hashBlob, which uses a
temp file with a name starting with "hash", but I have not been able to tell
what's wrong.
I don't understand where the "\\?" path prefix (windows UNC-style path)
is coming from in the path that gets fed into git hash-file, or why git
hash-file can't open the file.
After recent changes to use OsPath, test suite fails on windows with:
Exception: Uneven number of bytes: 5. This is not a Word16 bytestream.
Hopefully this fixes it. The innefficiency of the conversion is
unfortunate.
