mingw: special-case GIT_REDIRECT_STDERR=2>&1

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>
This commit is contained in:
Johannes Schindelin
2017-01-09 11:12:49 +01:00
parent 8312809967
commit 1c6fdfeec8
2 changed files with 22 additions and 1 deletions

View File

@@ -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) {

View File

@@ -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