dunk cannot find file `i/filename.ext`

[kseistrup]

When I git diff in a directory that hasn't been committed, the file paths appears to start with i/ and w/:

$ mkdir testdunk && cd testdunk
$ git init
$ date > date.txt   # create a file with a single line
$ git add date.txt
$ git commit -a -m 'Initial commit'
$ date >> date.txt  # append a line to existing file
$ git diff
diff --git i/date.txt w/date.txt
index d4b0209..7873ad6 100644
--- i/date.txt
+++ w/date.txt
@@ -1 +1,2 @@
 2025-04-20T11:01:30 CEST
+2025-04-20T11:02:12 CEST

When I add dunk to the pipeline, it cannot seem to find the file:

$ git diff | dunk
                                                                                                   1 file changed                                                                                                    
                                                                                  +1 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -0                                                                                   

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ i/date.txt (1 additions, 0 removals) ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Traceback (most recent call last):
  File "/home/kas/.local/lib/virtualenvs/dunk/bin/dunk", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/home/kas/.local/lib/virtualenvs/dunk/lib/python3.13/site-packages/dunk/dunk.py", line 83, in main
    _run_dunk()
    ~~~~~~~~~^^
  File "/home/kas/.local/lib/virtualenvs/dunk/lib/python3.13/site-packages/dunk/dunk.py", line 132, in _run_dunk
    target_code = target_file.read_text()
  File "/usr/lib/python3.13/pathlib/_local.py", line 546, in read_text
    return PathBase.read_text(self, encoding, errors, newline)
           ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/p                                                                                                   1 file changed                                                                                                    
                                                                                  +1 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -0                                                                                   

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ i/date.txt (1 additions, 0 removals) ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Traceback (most recent call last):
  File "/home/kas/.local/lib/virtualenvs/dunk/bin/dunk", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/home/kas/.local/lib/virtualenvs/dunk/lib/python3.13/site-packages/dunk/dunk.py", line 83, in main
    _run_dunk()
    ~~~~~~~~~^^
  File "/home/kas/.local/lib/virtualenvs/dunk/lib/python3.13/site-packages/dunk/dunk.py", line 132, in _run_dunk
    target_code = target_file.read_text()
  File "/usr/lib/python3.13/pathlib/_local.py", line 546, in read_text
    return PathBase.read_text(self, encoding, errors, newline)
           ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/pathlib/_abc.py", line 632, in read_text
    with self.open(mode='r', encoding=encoding, errors=errors, newline=newline) as f:
         ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/pathlib/_local.py", line 537, in open
    return io.open(self, mode, buffering, encoding, errors, newline)
           ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/build/testdunk/i/date.txt'
athlib/_abc.py", line 632, in read_text
    with self.open(mode='r', encoding=encoding, errors=errors, newline=newline) as f:
         ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/pathlib/_local.py", line 537, in open
    return io.open(self, mode, buffering, encoding, errors, newline)
           ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/build/testdunk/i/date.txt'

However, if I commit everything and ask for the diff between the two hashes, the file paths appears to start with a/ and b/, and everything's cool:

$ git commit -a -m 'Updaste'
$ git diff e76e75b..eb9b405 | dunk
                                                                                                   1 file changed                                                                                                    
                                                                                  +1 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -0                                                                                   

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ date.txt (1 additions, 0 removals) ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲ @@ -1,1 +1,2 @@  ╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲╲
  1 2025-04-20T11:01:30 CEST                                                                                 1 2025-04-20T11:01:30 CEST                                                                              
                                                                                                             2 2025-04-20T11:02:12 CEST                                                                              

This happens with dunk 0.4.0a0 and 0.5.0b0.

---

$ uname -rom
6.14.2-arch1-1 x86_64 GNU/Linux
$ git --version
git version 2.49.0

[danwald]

see #27