From: Johannes Schindelin <johannes.schindelin@xxxxxx> In Git for Windows, when passing paths from shell scripts to regular Win32 executables, thanks to the MSYS2 runtime a somewhat magic path conversion happens that lets the shell script think that there is a file at `/git/Makefile` and the Win32 process it spawned thinks that the shell script said `C:/git-sdk-64/git/Makefile` instead. This conversion is documented in detail over here: https://www.msys2.org/docs/filesystem-paths/#automatic-unix-windows-path-conversion As all automatic conversions, there are gaps. For example, to avoid mistaking command-line options like `/LOG=log.txt` (which are quite common in the Windows world) from being mistaken for a Unix-style absolute path, the MSYS2 runtime specifically exempts arguments containing a `=` character from that conversion. We are about to change `test_cmp` to use `git diff --no-index`, which involves spawning precisely such a Win32 process. In combination, this would cause a failure in `t0021-conversion.sh` where we pass an absolute path containing an equal character to the `test_cmp` function. Seeing as the Unix tools like `cp` and `diff` that are used by Git's test suite in the Git for Windows SDK (thanks to the MSYS2 project) understand both Unix-style as well as Windows-style paths, we can stave off this problem by simply switching to Windows-style paths and side-stepping the need for any automatic path conversion. Note: The `PATH` variable is obviously special, as it is colon-separated in the MSYS2 Bash used by Git for Windows, and therefore _cannot_ contain absolute Windows-style paths, lest the colon after the drive letter is mistaken for a path separator. Therefore, we need to be careful to keep the Unix-style when modifying the `PATH` variable. Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx> --- t/t0021-conversion.sh | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh index bad37abad2c..15482fa78e3 100755 --- a/t/t0021-conversion.sh +++ b/t/t0021-conversion.sh @@ -8,8 +8,8 @@ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME . ./test-lib.sh . "$TEST_DIRECTORY"/lib-terminal.sh -TEST_ROOT="$PWD" -PATH=$TEST_ROOT:$PATH +PATH=$PWD:$PATH +TEST_ROOT="$(pwd)" write_script <<\EOF "$TEST_ROOT/rot13.sh" tr \ -- gitgitgadget
