tests: stabilize `test-split-legacy-inline-changelog.t` on Windows
The `tar` command is unable to process "C:\path\to\foo.tar" style paths, which
is how `$TESTDIR` is constructed. It also didn't work with
`$TESTDIR_FORWARD_SLASH`- both failed with:
tar: Cannot connect to C: resolve failed
[128]
But `cat` can handle it if the path is quoted, and `tar` can read from stdin.
#!/usr/bin/env python3
#
# A tool to help producing large and poorly compressible files
#
# Usage:
# $TESTDIR/seq.py 1000 | $TESTDIR/sha256line.py > my-file.txt
import hashlib
import sys
for line in sys.stdin:
print(hashlib.sha256(line.encode('utf8')).hexdigest())