[PATCH 2/3] mingw: special-case GIT_REDIRECT_STDERR=2>&1
- From
Johannes Schindelin <johannes.schindelin@gmx.de>
- Date
- Oct 30, 2017, 17:10 UTC
- Message-ID
- <bb3cec73c50a36af31b029ab37949decdfe45857.1509382976.git.johannes.schindelin@gmx.de>
- In-Reply-To
- <cover.1509382976.git.johannes.schindelin@gmx.de>
The "2>&1" notation in POSIX shells implies that stderr is redirected to stdout. Let's special-case this value for the environment variable GIT_REDIRECT_STDERR to allow writing to the same destination as stdout.
The functionality was suggested by Jeff Hostetler.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> --- compat/mingw.c | 15 +++++++++++++++ t/t0001-init.sh | 8 +++++++- 2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/compat/mingw.c b/compat/mingw.c index 6c6c7795a70..2d44d21aca8 100644 --- a/compat/mingw.c +++ b/compat/mingw.c @@ -2160,6 +2160,21 @@ static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd, CloseHandle(handle); return; } + if (std_id == STD_ERROR_HANDLE && !wcscmp(buf, L"2>&1")) { + handle = GetStdHandle(STD_OUTPUT_HANDLE); + if (handle == INVALID_HANDLE_VALUE) { + close(fd); + handle = GetStdHandle(std_id); + if (handle != INVALID_HANDLE_VALUE) + CloseHandle(handle); + } else { + int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY); + SetStdHandle(std_id, handle); + dup2(new_fd, fd); + /* do *not* close the new_fd: that would close stdout */ + } + return; + } handle = CreateFileW(buf, desired_access, 0, NULL, create_flag, flags, NULL); if (handle != INVALID_HANDLE_VALUE) { diff --git a/t/t0001-init.sh b/t/t0001-init.sh index 0fd2fc45385..c413bff9cf1 100755 --- a/t/t0001-init.sh +++ b/t/t0001-init.sh @@ -456,7 +456,13 @@ test_expect_success 're-init from a linked worktree' ' test_expect_success MINGW 'redirect std handles' ' GIT_REDIRECT_STDOUT=output.txt git rev-parse --git-dir && test .git = "$(cat output.txt)" && - test -z "$(GIT_REDIRECT_STDOUT=off git rev-parse --git-dir)" + test -z "$(GIT_REDIRECT_STDOUT=off git rev-parse --git-dir)" && + test_must_fail env \ + GIT_REDIRECT_STDOUT=output.txt \ + GIT_REDIRECT_STDERR="2>&1" \ + git rev-parse --git-dir --verify refs/invalid && + printf ".git\nfatal: Needed a single revision\n" >expect && + test_cmp expect output.txt ' test_done
-- 2.15.0.windows.1