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-rw-r--r--third_party/git/compat/mingw.c2903
1 files changed, 0 insertions, 2903 deletions
diff --git a/third_party/git/compat/mingw.c b/third_party/git/compat/mingw.c
deleted file mode 100644
index a00f3312300a..000000000000
--- a/third_party/git/compat/mingw.c
+++ /dev/null
@@ -1,2903 +0,0 @@
-#include "../git-compat-util.h"
-#include "win32.h"
-#include <conio.h>
-#include <wchar.h>
-#include "../strbuf.h"
-#include "../run-command.h"
-#include "../cache.h"
-#include "win32/lazyload.h"
-#include "../config.h"
-#include "dir.h"
-
-#define HCAST(type, handle) ((type)(intptr_t)handle)
-
-static const int delay[] = { 0, 1, 10, 20, 40 };
-
-void open_in_gdb(void)
-{
-	static struct child_process cp = CHILD_PROCESS_INIT;
-	extern char *_pgmptr;
-
-	strvec_pushl(&cp.args, "mintty", "gdb", NULL);
-	strvec_pushf(&cp.args, "--pid=%d", getpid());
-	cp.clean_on_exit = 1;
-	if (start_command(&cp) < 0)
-		die_errno("Could not start gdb");
-	sleep(1);
-}
-
-int err_win_to_posix(DWORD winerr)
-{
-	int error = ENOSYS;
-	switch(winerr) {
-	case ERROR_ACCESS_DENIED: error = EACCES; break;
-	case ERROR_ACCOUNT_DISABLED: error = EACCES; break;
-	case ERROR_ACCOUNT_RESTRICTION: error = EACCES; break;
-	case ERROR_ALREADY_ASSIGNED: error = EBUSY; break;
-	case ERROR_ALREADY_EXISTS: error = EEXIST; break;
-	case ERROR_ARITHMETIC_OVERFLOW: error = ERANGE; break;
-	case ERROR_BAD_COMMAND: error = EIO; break;
-	case ERROR_BAD_DEVICE: error = ENODEV; break;
-	case ERROR_BAD_DRIVER_LEVEL: error = ENXIO; break;
-	case ERROR_BAD_EXE_FORMAT: error = ENOEXEC; break;
-	case ERROR_BAD_FORMAT: error = ENOEXEC; break;
-	case ERROR_BAD_LENGTH: error = EINVAL; break;
-	case ERROR_BAD_PATHNAME: error = ENOENT; break;
-	case ERROR_BAD_PIPE: error = EPIPE; break;
-	case ERROR_BAD_UNIT: error = ENODEV; break;
-	case ERROR_BAD_USERNAME: error = EINVAL; break;
-	case ERROR_BROKEN_PIPE: error = EPIPE; break;
-	case ERROR_BUFFER_OVERFLOW: error = ENAMETOOLONG; break;
-	case ERROR_BUSY: error = EBUSY; break;
-	case ERROR_BUSY_DRIVE: error = EBUSY; break;
-	case ERROR_CALL_NOT_IMPLEMENTED: error = ENOSYS; break;
-	case ERROR_CANNOT_MAKE: error = EACCES; break;
-	case ERROR_CANTOPEN: error = EIO; break;
-	case ERROR_CANTREAD: error = EIO; break;
-	case ERROR_CANTWRITE: error = EIO; break;
-	case ERROR_CRC: error = EIO; break;
-	case ERROR_CURRENT_DIRECTORY: error = EACCES; break;
-	case ERROR_DEVICE_IN_USE: error = EBUSY; break;
-	case ERROR_DEV_NOT_EXIST: error = ENODEV; break;
-	case ERROR_DIRECTORY: error = EINVAL; break;
-	case ERROR_DIR_NOT_EMPTY: error = ENOTEMPTY; break;
-	case ERROR_DISK_CHANGE: error = EIO; break;
-	case ERROR_DISK_FULL: error = ENOSPC; break;
-	case ERROR_DRIVE_LOCKED: error = EBUSY; break;
-	case ERROR_ENVVAR_NOT_FOUND: error = EINVAL; break;
-	case ERROR_EXE_MARKED_INVALID: error = ENOEXEC; break;
-	case ERROR_FILENAME_EXCED_RANGE: error = ENAMETOOLONG; break;
-	case ERROR_FILE_EXISTS: error = EEXIST; break;
-	case ERROR_FILE_INVALID: error = ENODEV; break;
-	case ERROR_FILE_NOT_FOUND: error = ENOENT; break;
-	case ERROR_GEN_FAILURE: error = EIO; break;
-	case ERROR_HANDLE_DISK_FULL: error = ENOSPC; break;
-	case ERROR_INSUFFICIENT_BUFFER: error = ENOMEM; break;
-	case ERROR_INVALID_ACCESS: error = EACCES; break;
-	case ERROR_INVALID_ADDRESS: error = EFAULT; break;
-	case ERROR_INVALID_BLOCK: error = EFAULT; break;
-	case ERROR_INVALID_DATA: error = EINVAL; break;
-	case ERROR_INVALID_DRIVE: error = ENODEV; break;
-	case ERROR_INVALID_EXE_SIGNATURE: error = ENOEXEC; break;
-	case ERROR_INVALID_FLAGS: error = EINVAL; break;
-	case ERROR_INVALID_FUNCTION: error = ENOSYS; break;
-	case ERROR_INVALID_HANDLE: error = EBADF; break;
-	case ERROR_INVALID_LOGON_HOURS: error = EACCES; break;
-	case ERROR_INVALID_NAME: error = EINVAL; break;
-	case ERROR_INVALID_OWNER: error = EINVAL; break;
-	case ERROR_INVALID_PARAMETER: error = EINVAL; break;
-	case ERROR_INVALID_PASSWORD: error = EPERM; break;
-	case ERROR_INVALID_PRIMARY_GROUP: error = EINVAL; break;
-	case ERROR_INVALID_SIGNAL_NUMBER: error = EINVAL; break;
-	case ERROR_INVALID_TARGET_HANDLE: error = EIO; break;
-	case ERROR_INVALID_WORKSTATION: error = EACCES; break;
-	case ERROR_IO_DEVICE: error = EIO; break;
-	case ERROR_IO_INCOMPLETE: error = EINTR; break;
-	case ERROR_LOCKED: error = EBUSY; break;
-	case ERROR_LOCK_VIOLATION: error = EACCES; break;
-	case ERROR_LOGON_FAILURE: error = EACCES; break;
-	case ERROR_MAPPED_ALIGNMENT: error = EINVAL; break;
-	case ERROR_META_EXPANSION_TOO_LONG: error = E2BIG; break;
-	case ERROR_MORE_DATA: error = EPIPE; break;
-	case ERROR_NEGATIVE_SEEK: error = ESPIPE; break;
-	case ERROR_NOACCESS: error = EFAULT; break;
-	case ERROR_NONE_MAPPED: error = EINVAL; break;
-	case ERROR_NOT_ENOUGH_MEMORY: error = ENOMEM; break;
-	case ERROR_NOT_READY: error = EAGAIN; break;
-	case ERROR_NOT_SAME_DEVICE: error = EXDEV; break;
-	case ERROR_NO_DATA: error = EPIPE; break;
-	case ERROR_NO_MORE_SEARCH_HANDLES: error = EIO; break;
-	case ERROR_NO_PROC_SLOTS: error = EAGAIN; break;
-	case ERROR_NO_SUCH_PRIVILEGE: error = EACCES; break;
-	case ERROR_OPEN_FAILED: error = EIO; break;
-	case ERROR_OPEN_FILES: error = EBUSY; break;
-	case ERROR_OPERATION_ABORTED: error = EINTR; break;
-	case ERROR_OUTOFMEMORY: error = ENOMEM; break;
-	case ERROR_PASSWORD_EXPIRED: error = EACCES; break;
-	case ERROR_PATH_BUSY: error = EBUSY; break;
-	case ERROR_PATH_NOT_FOUND: error = ENOENT; break;
-	case ERROR_PIPE_BUSY: error = EBUSY; break;
-	case ERROR_PIPE_CONNECTED: error = EPIPE; break;
-	case ERROR_PIPE_LISTENING: error = EPIPE; break;
-	case ERROR_PIPE_NOT_CONNECTED: error = EPIPE; break;
-	case ERROR_PRIVILEGE_NOT_HELD: error = EACCES; break;
-	case ERROR_READ_FAULT: error = EIO; break;
-	case ERROR_SEEK: error = EIO; break;
-	case ERROR_SEEK_ON_DEVICE: error = ESPIPE; break;
-	case ERROR_SHARING_BUFFER_EXCEEDED: error = ENFILE; break;
-	case ERROR_SHARING_VIOLATION: error = EACCES; break;
-	case ERROR_STACK_OVERFLOW: error = ENOMEM; break;
-	case ERROR_SUCCESS: BUG("err_win_to_posix() called without an error!");
-	case ERROR_SWAPERROR: error = ENOENT; break;
-	case ERROR_TOO_MANY_MODULES: error = EMFILE; break;
-	case ERROR_TOO_MANY_OPEN_FILES: error = EMFILE; break;
-	case ERROR_UNRECOGNIZED_MEDIA: error = ENXIO; break;
-	case ERROR_UNRECOGNIZED_VOLUME: error = ENODEV; break;
-	case ERROR_WAIT_NO_CHILDREN: error = ECHILD; break;
-	case ERROR_WRITE_FAULT: error = EIO; break;
-	case ERROR_WRITE_PROTECT: error = EROFS; break;
-	}
-	return error;
-}
-
-static inline int is_file_in_use_error(DWORD errcode)
-{
-	switch (errcode) {
-	case ERROR_SHARING_VIOLATION:
-	case ERROR_ACCESS_DENIED:
-		return 1;
-	}
-
-	return 0;
-}
-
-static int read_yes_no_answer(void)
-{
-	char answer[1024];
-
-	if (fgets(answer, sizeof(answer), stdin)) {
-		size_t answer_len = strlen(answer);
-		int got_full_line = 0, c;
-
-		/* remove the newline */
-		if (answer_len >= 2 && answer[answer_len-2] == '\r') {
-			answer[answer_len-2] = '\0';
-			got_full_line = 1;
-		} else if (answer_len >= 1 && answer[answer_len-1] == '\n') {
-			answer[answer_len-1] = '\0';
-			got_full_line = 1;
-		}
-		/* flush the buffer in case we did not get the full line */
-		if (!got_full_line)
-			while ((c = getchar()) != EOF && c != '\n')
-				;
-	} else
-		/* we could not read, return the
-		 * default answer which is no */
-		return 0;
-
-	if (tolower(answer[0]) == 'y' && !answer[1])
-		return 1;
-	if (!strncasecmp(answer, "yes", sizeof(answer)))
-		return 1;
-	if (tolower(answer[0]) == 'n' && !answer[1])
-		return 0;
-	if (!strncasecmp(answer, "no", sizeof(answer)))
-		return 0;
-
-	/* did not find an answer we understand */
-	return -1;
-}
-
-static int ask_yes_no_if_possible(const char *format, ...)
-{
-	char question[4096];
-	const char *retry_hook[] = { NULL, NULL, NULL };
-	va_list args;
-
-	va_start(args, format);
-	vsnprintf(question, sizeof(question), format, args);
-	va_end(args);
-
-	if ((retry_hook[0] = mingw_getenv("GIT_ASK_YESNO"))) {
-		retry_hook[1] = question;
-		return !run_command_v_opt(retry_hook, 0);
-	}
-
-	if (!isatty(_fileno(stdin)) || !isatty(_fileno(stderr)))
-		return 0;
-
-	while (1) {
-		int answer;
-		fprintf(stderr, "%s (y/n) ", question);
-
-		if ((answer = read_yes_no_answer()) >= 0)
-			return answer;
-
-		fprintf(stderr, "Sorry, I did not understand your answer. "
-				"Please type 'y' or 'n'\n");
-	}
-}
-
-/* Windows only */
-enum hide_dotfiles_type {
-	HIDE_DOTFILES_FALSE = 0,
-	HIDE_DOTFILES_TRUE,
-	HIDE_DOTFILES_DOTGITONLY
-};
-
-static int core_restrict_inherited_handles = -1;
-static enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
-static char *unset_environment_variables;
-
-int mingw_core_config(const char *var, const char *value, void *cb)
-{
-	if (!strcmp(var, "core.hidedotfiles")) {
-		if (value && !strcasecmp(value, "dotgitonly"))
-			hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
-		else
-			hide_dotfiles = git_config_bool(var, value);
-		return 0;
-	}
-
-	if (!strcmp(var, "core.unsetenvvars")) {
-		free(unset_environment_variables);
-		unset_environment_variables = xstrdup(value);
-		return 0;
-	}
-
-	if (!strcmp(var, "core.restrictinheritedhandles")) {
-		if (value && !strcasecmp(value, "auto"))
-			core_restrict_inherited_handles = -1;
-		else
-			core_restrict_inherited_handles =
-				git_config_bool(var, value);
-		return 0;
-	}
-
-	return 0;
-}
-
-/* Normalizes NT paths as returned by some low-level APIs. */
-static wchar_t *normalize_ntpath(wchar_t *wbuf)
-{
-	int i;
-	/* fix absolute path prefixes */
-	if (wbuf[0] == '\\') {
-		/* strip NT namespace prefixes */
-		if (!wcsncmp(wbuf, L"\\??\\", 4) ||
-		    !wcsncmp(wbuf, L"\\\\?\\", 4))
-			wbuf += 4;
-		else if (!wcsnicmp(wbuf, L"\\DosDevices\\", 12))
-			wbuf += 12;
-		/* replace remaining '...UNC\' with '\\' */
-		if (!wcsnicmp(wbuf, L"UNC\\", 4)) {
-			wbuf += 2;
-			*wbuf = '\\';
-		}
-	}
-	/* convert backslashes to slashes */
-	for (i = 0; wbuf[i]; i++)
-		if (wbuf[i] == '\\')
-			wbuf[i] = '/';
-	return wbuf;
-}
-
-int mingw_unlink(const char *pathname)
-{
-	int ret, tries = 0;
-	wchar_t wpathname[MAX_PATH];
-	if (xutftowcs_path(wpathname, pathname) < 0)
-		return -1;
-
-	if (DeleteFileW(wpathname))
-		return 0;
-
-	/* read-only files cannot be removed */
-	_wchmod(wpathname, 0666);
-	while ((ret = _wunlink(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
-		if (!is_file_in_use_error(GetLastError()))
-			break;
-		/*
-		 * We assume that some other process had the source or
-		 * destination file open at the wrong moment and retry.
-		 * In order to give the other process a higher chance to
-		 * complete its operation, we give up our time slice now.
-		 * If we have to retry again, we do sleep a bit.
-		 */
-		Sleep(delay[tries]);
-		tries++;
-	}
-	while (ret == -1 && is_file_in_use_error(GetLastError()) &&
-	       ask_yes_no_if_possible("Unlink of file '%s' failed. "
-			"Should I try again?", pathname))
-	       ret = _wunlink(wpathname);
-	return ret;
-}
-
-static int is_dir_empty(const wchar_t *wpath)
-{
-	WIN32_FIND_DATAW findbuf;
-	HANDLE handle;
-	wchar_t wbuf[MAX_PATH + 2];
-	wcscpy(wbuf, wpath);
-	wcscat(wbuf, L"\\*");
-	handle = FindFirstFileW(wbuf, &findbuf);
-	if (handle == INVALID_HANDLE_VALUE)
-		return GetLastError() == ERROR_NO_MORE_FILES;
-
-	while (!wcscmp(findbuf.cFileName, L".") ||
-			!wcscmp(findbuf.cFileName, L".."))
-		if (!FindNextFileW(handle, &findbuf)) {
-			DWORD err = GetLastError();
-			FindClose(handle);
-			return err == ERROR_NO_MORE_FILES;
-		}
-	FindClose(handle);
-	return 0;
-}
-
-int mingw_rmdir(const char *pathname)
-{
-	int ret, tries = 0;
-	wchar_t wpathname[MAX_PATH];
-	if (xutftowcs_path(wpathname, pathname) < 0)
-		return -1;
-
-	while ((ret = _wrmdir(wpathname)) == -1 && tries < ARRAY_SIZE(delay)) {
-		if (!is_file_in_use_error(GetLastError()))
-			errno = err_win_to_posix(GetLastError());
-		if (errno != EACCES)
-			break;
-		if (!is_dir_empty(wpathname)) {
-			errno = ENOTEMPTY;
-			break;
-		}
-		/*
-		 * We assume that some other process had the source or
-		 * destination file open at the wrong moment and retry.
-		 * In order to give the other process a higher chance to
-		 * complete its operation, we give up our time slice now.
-		 * If we have to retry again, we do sleep a bit.
-		 */
-		Sleep(delay[tries]);
-		tries++;
-	}
-	while (ret == -1 && errno == EACCES && is_file_in_use_error(GetLastError()) &&
-	       ask_yes_no_if_possible("Deletion of directory '%s' failed. "
-			"Should I try again?", pathname))
-	       ret = _wrmdir(wpathname);
-	return ret;
-}
-
-static inline int needs_hiding(const char *path)
-{
-	const char *basename;
-
-	if (hide_dotfiles == HIDE_DOTFILES_FALSE)
-		return 0;
-
-	/* We cannot use basename(), as it would remove trailing slashes */
-	win32_skip_dos_drive_prefix((char **)&path);
-	if (!*path)
-		return 0;
-
-	for (basename = path; *path; path++)
-		if (is_dir_sep(*path)) {
-			do {
-				path++;
-			} while (is_dir_sep(*path));
-			/* ignore trailing slashes */
-			if (*path)
-				basename = path;
-			else
-				break;
-		}
-
-	if (hide_dotfiles == HIDE_DOTFILES_TRUE)
-		return *basename == '.';
-
-	assert(hide_dotfiles == HIDE_DOTFILES_DOTGITONLY);
-	return !strncasecmp(".git", basename, 4) &&
-		(!basename[4] || is_dir_sep(basename[4]));
-}
-
-static int set_hidden_flag(const wchar_t *path, int set)
-{
-	DWORD original = GetFileAttributesW(path), modified;
-	if (set)
-		modified = original | FILE_ATTRIBUTE_HIDDEN;
-	else
-		modified = original & ~FILE_ATTRIBUTE_HIDDEN;
-	if (original == modified || SetFileAttributesW(path, modified))
-		return 0;
-	errno = err_win_to_posix(GetLastError());
-	return -1;
-}
-
-int mingw_mkdir(const char *path, int mode)
-{
-	int ret;
-	wchar_t wpath[MAX_PATH];
-
-	if (!is_valid_win32_path(path, 0)) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	if (xutftowcs_path(wpath, path) < 0)
-		return -1;
-	ret = _wmkdir(wpath);
-	if (!ret && needs_hiding(path))
-		return set_hidden_flag(wpath, 1);
-	return ret;
-}
-
-/*
- * Calling CreateFile() using FILE_APPEND_DATA and without FILE_WRITE_DATA
- * is documented in [1] as opening a writable file handle in append mode.
- * (It is believed that) this is atomic since it is maintained by the
- * kernel unlike the O_APPEND flag which is racily maintained by the CRT.
- *
- * [1] https://docs.microsoft.com/en-us/windows/desktop/fileio/file-access-rights-constants
- *
- * This trick does not appear to work for named pipes.  Instead it creates
- * a named pipe client handle that cannot be written to.  Callers should
- * just use the regular _wopen() for them.  (And since client handle gets
- * bound to a unique server handle, it isn't really an issue.)
- */
-static int mingw_open_append(wchar_t const *wfilename, int oflags, ...)
-{
-	HANDLE handle;
-	int fd;
-	DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING;
-
-	/* only these flags are supported */
-	if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND))
-		return errno = ENOSYS, -1;
-
-	/*
-	 * FILE_SHARE_WRITE is required to permit child processes
-	 * to append to the file.
-	 */
-	handle = CreateFileW(wfilename, FILE_APPEND_DATA,
-			FILE_SHARE_WRITE | FILE_SHARE_READ,
-			NULL, create, FILE_ATTRIBUTE_NORMAL, NULL);
-	if (handle == INVALID_HANDLE_VALUE) {
-		DWORD err = GetLastError();
-
-		/*
-		 * Some network storage solutions (e.g. Isilon) might return
-		 * ERROR_INVALID_PARAMETER instead of expected error
-		 * ERROR_PATH_NOT_FOUND, which results in an unknown error. If
-		 * so, let's turn the error to ERROR_PATH_NOT_FOUND instead.
-		 */
-		if (err == ERROR_INVALID_PARAMETER)
-			err = ERROR_PATH_NOT_FOUND;
-
-		errno = err_win_to_posix(err);
-		return -1;
-	}
-
-	/*
-	 * No O_APPEND here, because the CRT uses it only to reset the
-	 * file pointer to EOF before each write(); but that is not
-	 * necessary (and may lead to races) for a file created with
-	 * FILE_APPEND_DATA.
-	 */
-	fd = _open_osfhandle((intptr_t)handle, O_BINARY);
-	if (fd < 0)
-		CloseHandle(handle);
-	return fd;
-}
-
-/*
- * Does the pathname map to the local named pipe filesystem?
- * That is, does it have a "//./pipe/" prefix?
- */
-static int is_local_named_pipe_path(const char *filename)
-{
-	return (is_dir_sep(filename[0]) &&
-		is_dir_sep(filename[1]) &&
-		filename[2] == '.'  &&
-		is_dir_sep(filename[3]) &&
-		!strncasecmp(filename+4, "pipe", 4) &&
-		is_dir_sep(filename[8]) &&
-		filename[9]);
-}
-
-int mingw_open (const char *filename, int oflags, ...)
-{
-	typedef int (*open_fn_t)(wchar_t const *wfilename, int oflags, ...);
-	va_list args;
-	unsigned mode;
-	int fd, create = (oflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL);
-	wchar_t wfilename[MAX_PATH];
-	open_fn_t open_fn;
-
-	va_start(args, oflags);
-	mode = va_arg(args, int);
-	va_end(args);
-
-	if (!is_valid_win32_path(filename, !create)) {
-		errno = create ? EINVAL : ENOENT;
-		return -1;
-	}
-
-	if ((oflags & O_APPEND) && !is_local_named_pipe_path(filename))
-		open_fn = mingw_open_append;
-	else
-		open_fn = _wopen;
-
-	if (filename && !strcmp(filename, "/dev/null"))
-		wcscpy(wfilename, L"nul");
-	else if (xutftowcs_path(wfilename, filename) < 0)
-		return -1;
-
-	fd = open_fn(wfilename, oflags, mode);
-
-	if (fd < 0 && (oflags & O_ACCMODE) != O_RDONLY && errno == EACCES) {
-		DWORD attrs = GetFileAttributesW(wfilename);
-		if (attrs != INVALID_FILE_ATTRIBUTES && (attrs & FILE_ATTRIBUTE_DIRECTORY))
-			errno = EISDIR;
-	}
-	if ((oflags & O_CREAT) && needs_hiding(filename)) {
-		/*
-		 * Internally, _wopen() uses the CreateFile() API which errors
-		 * out with an ERROR_ACCESS_DENIED if CREATE_ALWAYS was
-		 * specified and an already existing file's attributes do not
-		 * match *exactly*. As there is no mode or flag we can set that
-		 * would correspond to FILE_ATTRIBUTE_HIDDEN, let's just try
-		 * again *without* the O_CREAT flag (that corresponds to the
-		 * CREATE_ALWAYS flag of CreateFile()).
-		 */
-		if (fd < 0 && errno == EACCES)
-			fd = open_fn(wfilename, oflags & ~O_CREAT, mode);
-		if (fd >= 0 && set_hidden_flag(wfilename, 1))
-			warning("could not mark '%s' as hidden.", filename);
-	}
-	return fd;
-}
-
-static BOOL WINAPI ctrl_ignore(DWORD type)
-{
-	return TRUE;
-}
-
-#undef fgetc
-int mingw_fgetc(FILE *stream)
-{
-	int ch;
-	if (!isatty(_fileno(stream)))
-		return fgetc(stream);
-
-	SetConsoleCtrlHandler(ctrl_ignore, TRUE);
-	while (1) {
-		ch = fgetc(stream);
-		if (ch != EOF || GetLastError() != ERROR_OPERATION_ABORTED)
-			break;
-
-		/* Ctrl+C was pressed, simulate SIGINT and retry */
-		mingw_raise(SIGINT);
-	}
-	SetConsoleCtrlHandler(ctrl_ignore, FALSE);
-	return ch;
-}
-
-#undef fopen
-FILE *mingw_fopen (const char *filename, const char *otype)
-{
-	int hide = needs_hiding(filename);
-	FILE *file;
-	wchar_t wfilename[MAX_PATH], wotype[4];
-	if (filename && !strcmp(filename, "/dev/null"))
-		wcscpy(wfilename, L"nul");
-	else if (!is_valid_win32_path(filename, 1)) {
-		int create = otype && strchr(otype, 'w');
-		errno = create ? EINVAL : ENOENT;
-		return NULL;
-	} else if (xutftowcs_path(wfilename, filename) < 0)
-		return NULL;
-
-	if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
-		return NULL;
-
-	if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
-		error("could not unhide %s", filename);
-		return NULL;
-	}
-	file = _wfopen(wfilename, wotype);
-	if (!file && GetLastError() == ERROR_INVALID_NAME)
-		errno = ENOENT;
-	if (file && hide && set_hidden_flag(wfilename, 1))
-		warning("could not mark '%s' as hidden.", filename);
-	return file;
-}
-
-FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream)
-{
-	int hide = needs_hiding(filename);
-	FILE *file;
-	wchar_t wfilename[MAX_PATH], wotype[4];
-	if (filename && !strcmp(filename, "/dev/null"))
-		wcscpy(wfilename, L"nul");
-	else if (!is_valid_win32_path(filename, 1)) {
-		int create = otype && strchr(otype, 'w');
-		errno = create ? EINVAL : ENOENT;
-		return NULL;
-	} else if (xutftowcs_path(wfilename, filename) < 0)
-		return NULL;
-
-	if (xutftowcs(wotype, otype, ARRAY_SIZE(wotype)) < 0)
-		return NULL;
-
-	if (hide && !access(filename, F_OK) && set_hidden_flag(wfilename, 0)) {
-		error("could not unhide %s", filename);
-		return NULL;
-	}
-	file = _wfreopen(wfilename, wotype, stream);
-	if (file && hide && set_hidden_flag(wfilename, 1))
-		warning("could not mark '%s' as hidden.", filename);
-	return file;
-}
-
-#undef fflush
-int mingw_fflush(FILE *stream)
-{
-	int ret = fflush(stream);
-
-	/*
-	 * write() is used behind the scenes of stdio output functions.
-	 * Since git code does not check for errors after each stdio write
-	 * operation, it can happen that write() is called by a later
-	 * stdio function even if an earlier write() call failed. In the
-	 * case of a pipe whose readable end was closed, only the first
-	 * call to write() reports EPIPE on Windows. Subsequent write()
-	 * calls report EINVAL. It is impossible to notice whether this
-	 * fflush invocation triggered such a case, therefore, we have to
-	 * catch all EINVAL errors whole-sale.
-	 */
-	if (ret && errno == EINVAL)
-		errno = EPIPE;
-
-	return ret;
-}
-
-#undef write
-ssize_t mingw_write(int fd, const void *buf, size_t len)
-{
-	ssize_t result = write(fd, buf, len);
-
-	if (result < 0 && errno == EINVAL && buf) {
-		/* check if fd is a pipe */
-		HANDLE h = (HANDLE) _get_osfhandle(fd);
-		if (GetFileType(h) == FILE_TYPE_PIPE)
-			errno = EPIPE;
-		else
-			errno = EINVAL;
-	}
-
-	return result;
-}
-
-int mingw_access(const char *filename, int mode)
-{
-	wchar_t wfilename[MAX_PATH];
-	if (xutftowcs_path(wfilename, filename) < 0)
-		return -1;
-	/* X_OK is not supported by the MSVCRT version */
-	return _waccess(wfilename, mode & ~X_OK);
-}
-
-int mingw_chdir(const char *dirname)
-{
-	wchar_t wdirname[MAX_PATH];
-	if (xutftowcs_path(wdirname, dirname) < 0)
-		return -1;
-	return _wchdir(wdirname);
-}
-
-int mingw_chmod(const char *filename, int mode)
-{
-	wchar_t wfilename[MAX_PATH];
-	if (xutftowcs_path(wfilename, filename) < 0)
-		return -1;
-	return _wchmod(wfilename, mode);
-}
-
-/*
- * The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
- * Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.
- */
-static inline long long filetime_to_hnsec(const FILETIME *ft)
-{
-	long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
-	/* Windows to Unix Epoch conversion */
-	return winTime - 116444736000000000LL;
-}
-
-static inline void filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
-{
-	long long hnsec = filetime_to_hnsec(ft);
-	ts->tv_sec = (time_t)(hnsec / 10000000);
-	ts->tv_nsec = (hnsec % 10000000) * 100;
-}
-
-/**
- * Verifies that safe_create_leading_directories() would succeed.
- */
-static int has_valid_directory_prefix(wchar_t *wfilename)
-{
-	int n = wcslen(wfilename);
-
-	while (n > 0) {
-		wchar_t c = wfilename[--n];
-		DWORD attributes;
-
-		if (!is_dir_sep(c))
-			continue;
-
-		wfilename[n] = L'\0';
-		attributes = GetFileAttributesW(wfilename);
-		wfilename[n] = c;
-		if (attributes == FILE_ATTRIBUTE_DIRECTORY ||
-				attributes == FILE_ATTRIBUTE_DEVICE)
-			return 1;
-		if (attributes == INVALID_FILE_ATTRIBUTES)
-			switch (GetLastError()) {
-			case ERROR_PATH_NOT_FOUND:
-				continue;
-			case ERROR_FILE_NOT_FOUND:
-				/* This implies parent directory exists. */
-				return 1;
-			}
-		return 0;
-	}
-	return 1;
-}
-
-/* We keep the do_lstat code in a separate function to avoid recursion.
- * When a path ends with a slash, the stat will fail with ENOENT. In
- * this case, we strip the trailing slashes and stat again.
- *
- * If follow is true then act like stat() and report on the link
- * target. Otherwise report on the link itself.
- */
-static int do_lstat(int follow, const char *file_name, struct stat *buf)
-{
-	WIN32_FILE_ATTRIBUTE_DATA fdata;
-	wchar_t wfilename[MAX_PATH];
-	if (xutftowcs_path(wfilename, file_name) < 0)
-		return -1;
-
-	if (GetFileAttributesExW(wfilename, GetFileExInfoStandard, &fdata)) {
-		buf->st_ino = 0;
-		buf->st_gid = 0;
-		buf->st_uid = 0;
-		buf->st_nlink = 1;
-		buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
-		buf->st_size = fdata.nFileSizeLow |
-			(((off_t)fdata.nFileSizeHigh)<<32);
-		buf->st_dev = buf->st_rdev = 0; /* not used by Git */
-		filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
-		filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
-		filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
-		if (fdata.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
-			WIN32_FIND_DATAW findbuf;
-			HANDLE handle = FindFirstFileW(wfilename, &findbuf);
-			if (handle != INVALID_HANDLE_VALUE) {
-				if ((findbuf.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
-						(findbuf.dwReserved0 == IO_REPARSE_TAG_SYMLINK)) {
-					if (follow) {
-						char buffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
-						buf->st_size = readlink(file_name, buffer, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
-					} else {
-						buf->st_mode = S_IFLNK;
-					}
-					buf->st_mode |= S_IREAD;
-					if (!(findbuf.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
-						buf->st_mode |= S_IWRITE;
-				}
-				FindClose(handle);
-			}
-		}
-		return 0;
-	}
-	switch (GetLastError()) {
-	case ERROR_ACCESS_DENIED:
-	case ERROR_SHARING_VIOLATION:
-	case ERROR_LOCK_VIOLATION:
-	case ERROR_SHARING_BUFFER_EXCEEDED:
-		errno = EACCES;
-		break;
-	case ERROR_BUFFER_OVERFLOW:
-		errno = ENAMETOOLONG;
-		break;
-	case ERROR_NOT_ENOUGH_MEMORY:
-		errno = ENOMEM;
-		break;
-	case ERROR_PATH_NOT_FOUND:
-		if (!has_valid_directory_prefix(wfilename)) {
-			errno = ENOTDIR;
-			break;
-		}
-		/* fallthru */
-	default:
-		errno = ENOENT;
-		break;
-	}
-	return -1;
-}
-
-/* We provide our own lstat/fstat functions, since the provided
- * lstat/fstat functions are so slow. These stat functions are
- * tailored for Git's usage (read: fast), and are not meant to be
- * complete. Note that Git stat()s are redirected to mingw_lstat()
- * too, since Windows doesn't really handle symlinks that well.
- */
-static int do_stat_internal(int follow, const char *file_name, struct stat *buf)
-{
-	int namelen;
-	char alt_name[PATH_MAX];
-
-	if (!do_lstat(follow, file_name, buf))
-		return 0;
-
-	/* if file_name ended in a '/', Windows returned ENOENT;
-	 * try again without trailing slashes
-	 */
-	if (errno != ENOENT)
-		return -1;
-
-	namelen = strlen(file_name);
-	if (namelen && file_name[namelen-1] != '/')
-		return -1;
-	while (namelen && file_name[namelen-1] == '/')
-		--namelen;
-	if (!namelen || namelen >= PATH_MAX)
-		return -1;
-
-	memcpy(alt_name, file_name, namelen);
-	alt_name[namelen] = 0;
-	return do_lstat(follow, alt_name, buf);
-}
-
-static int get_file_info_by_handle(HANDLE hnd, struct stat *buf)
-{
-	BY_HANDLE_FILE_INFORMATION fdata;
-
-	if (!GetFileInformationByHandle(hnd, &fdata)) {
-		errno = err_win_to_posix(GetLastError());
-		return -1;
-	}
-
-	buf->st_ino = 0;
-	buf->st_gid = 0;
-	buf->st_uid = 0;
-	buf->st_nlink = 1;
-	buf->st_mode = file_attr_to_st_mode(fdata.dwFileAttributes);
-	buf->st_size = fdata.nFileSizeLow |
-		(((off_t)fdata.nFileSizeHigh)<<32);
-	buf->st_dev = buf->st_rdev = 0; /* not used by Git */
-	filetime_to_timespec(&(fdata.ftLastAccessTime), &(buf->st_atim));
-	filetime_to_timespec(&(fdata.ftLastWriteTime), &(buf->st_mtim));
-	filetime_to_timespec(&(fdata.ftCreationTime), &(buf->st_ctim));
-	return 0;
-}
-
-int mingw_lstat(const char *file_name, struct stat *buf)
-{
-	return do_stat_internal(0, file_name, buf);
-}
-int mingw_stat(const char *file_name, struct stat *buf)
-{
-	return do_stat_internal(1, file_name, buf);
-}
-
-int mingw_fstat(int fd, struct stat *buf)
-{
-	HANDLE fh = (HANDLE)_get_osfhandle(fd);
-	DWORD avail, type = GetFileType(fh) & ~FILE_TYPE_REMOTE;
-
-	switch (type) {
-	case FILE_TYPE_DISK:
-		return get_file_info_by_handle(fh, buf);
-
-	case FILE_TYPE_CHAR:
-	case FILE_TYPE_PIPE:
-		/* initialize stat fields */
-		memset(buf, 0, sizeof(*buf));
-		buf->st_nlink = 1;
-
-		if (type == FILE_TYPE_CHAR) {
-			buf->st_mode = _S_IFCHR;
-		} else {
-			buf->st_mode = _S_IFIFO;
-			if (PeekNamedPipe(fh, NULL, 0, NULL, &avail, NULL))
-				buf->st_size = avail;
-		}
-		return 0;
-
-	default:
-		errno = EBADF;
-		return -1;
-	}
-}
-
-static inline void time_t_to_filetime(time_t t, FILETIME *ft)
-{
-	long long winTime = t * 10000000LL + 116444736000000000LL;
-	ft->dwLowDateTime = winTime;
-	ft->dwHighDateTime = winTime >> 32;
-}
-
-int mingw_utime (const char *file_name, const struct utimbuf *times)
-{
-	FILETIME mft, aft;
-	int fh, rc;
-	DWORD attrs;
-	wchar_t wfilename[MAX_PATH];
-	if (xutftowcs_path(wfilename, file_name) < 0)
-		return -1;
-
-	/* must have write permission */
-	attrs = GetFileAttributesW(wfilename);
-	if (attrs != INVALID_FILE_ATTRIBUTES &&
-	    (attrs & FILE_ATTRIBUTE_READONLY)) {
-		/* ignore errors here; open() will report them */
-		SetFileAttributesW(wfilename, attrs & ~FILE_ATTRIBUTE_READONLY);
-	}
-
-	if ((fh = _wopen(wfilename, O_RDWR | O_BINARY)) < 0) {
-		rc = -1;
-		goto revert_attrs;
-	}
-
-	if (times) {
-		time_t_to_filetime(times->modtime, &mft);
-		time_t_to_filetime(times->actime, &aft);
-	} else {
-		GetSystemTimeAsFileTime(&mft);
-		aft = mft;
-	}
-	if (!SetFileTime((HANDLE)_get_osfhandle(fh), NULL, &aft, &mft)) {
-		errno = EINVAL;
-		rc = -1;
-	} else
-		rc = 0;
-	close(fh);
-
-revert_attrs:
-	if (attrs != INVALID_FILE_ATTRIBUTES &&
-	    (attrs & FILE_ATTRIBUTE_READONLY)) {
-		/* ignore errors again */
-		SetFileAttributesW(wfilename, attrs);
-	}
-	return rc;
-}
-
-#undef strftime
-size_t mingw_strftime(char *s, size_t max,
-		      const char *format, const struct tm *tm)
-{
-	/* a pointer to the original strftime in case we can't find the UCRT version */
-	static size_t (*fallback)(char *, size_t, const char *, const struct tm *) = strftime;
-	size_t ret;
-	DECLARE_PROC_ADDR(ucrtbase.dll, size_t, strftime, char *, size_t,
-		const char *, const struct tm *);
-
-	if (INIT_PROC_ADDR(strftime))
-		ret = strftime(s, max, format, tm);
-	else
-		ret = fallback(s, max, format, tm);
-
-	if (!ret && errno == EINVAL)
-		die("invalid strftime format: '%s'", format);
-	return ret;
-}
-
-unsigned int sleep (unsigned int seconds)
-{
-	Sleep(seconds*1000);
-	return 0;
-}
-
-char *mingw_mktemp(char *template)
-{
-	wchar_t wtemplate[MAX_PATH];
-	if (xutftowcs_path(wtemplate, template) < 0)
-		return NULL;
-	if (!_wmktemp(wtemplate))
-		return NULL;
-	if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
-		return NULL;
-	return template;
-}
-
-int mkstemp(char *template)
-{
-	char *filename = mktemp(template);
-	if (filename == NULL)
-		return -1;
-	return open(filename, O_RDWR | O_CREAT, 0600);
-}
-
-int gettimeofday(struct timeval *tv, void *tz)
-{
-	FILETIME ft;
-	long long hnsec;
-
-	GetSystemTimeAsFileTime(&ft);
-	hnsec = filetime_to_hnsec(&ft);
-	tv->tv_sec = hnsec / 10000000;
-	tv->tv_usec = (hnsec % 10000000) / 10;
-	return 0;
-}
-
-int pipe(int filedes[2])
-{
-	HANDLE h[2];
-
-	/* this creates non-inheritable handles */
-	if (!CreatePipe(&h[0], &h[1], NULL, 8192)) {
-		errno = err_win_to_posix(GetLastError());
-		return -1;
-	}
-	filedes[0] = _open_osfhandle(HCAST(int, h[0]), O_NOINHERIT);
-	if (filedes[0] < 0) {
-		CloseHandle(h[0]);
-		CloseHandle(h[1]);
-		return -1;
-	}
-	filedes[1] = _open_osfhandle(HCAST(int, h[1]), O_NOINHERIT);
-	if (filedes[1] < 0) {
-		close(filedes[0]);
-		CloseHandle(h[1]);
-		return -1;
-	}
-	return 0;
-}
-
-struct tm *gmtime_r(const time_t *timep, struct tm *result)
-{
-	if (gmtime_s(result, timep) == 0)
-		return result;
-	return NULL;
-}
-
-struct tm *localtime_r(const time_t *timep, struct tm *result)
-{
-	if (localtime_s(result, timep) == 0)
-		return result;
-	return NULL;
-}
-
-char *mingw_getcwd(char *pointer, int len)
-{
-	wchar_t cwd[MAX_PATH], wpointer[MAX_PATH];
-	DWORD ret = GetCurrentDirectoryW(ARRAY_SIZE(cwd), cwd);
-
-	if (!ret || ret >= ARRAY_SIZE(cwd)) {
-		errno = ret ? ENAMETOOLONG : err_win_to_posix(GetLastError());
-		return NULL;
-	}
-	ret = GetLongPathNameW(cwd, wpointer, ARRAY_SIZE(wpointer));
-	if (!ret && GetLastError() == ERROR_ACCESS_DENIED) {
-		HANDLE hnd = CreateFileW(cwd, 0,
-			FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
-			OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
-		if (hnd == INVALID_HANDLE_VALUE)
-			return NULL;
-		ret = GetFinalPathNameByHandleW(hnd, wpointer, ARRAY_SIZE(wpointer), 0);
-		CloseHandle(hnd);
-		if (!ret || ret >= ARRAY_SIZE(wpointer))
-			return NULL;
-		if (xwcstoutf(pointer, normalize_ntpath(wpointer), len) < 0)
-			return NULL;
-		return pointer;
-	}
-	if (!ret || ret >= ARRAY_SIZE(wpointer))
-		return NULL;
-	if (xwcstoutf(pointer, wpointer, len) < 0)
-		return NULL;
-	convert_slashes(pointer);
-	return pointer;
-}
-
-/*
- * See "Parsing C++ Command-Line Arguments" at Microsoft's Docs:
- * https://docs.microsoft.com/en-us/cpp/cpp/parsing-cpp-command-line-arguments
- */
-static const char *quote_arg_msvc(const char *arg)
-{
-	/* count chars to quote */
-	int len = 0, n = 0;
-	int force_quotes = 0;
-	char *q, *d;
-	const char *p = arg;
-	if (!*p) force_quotes = 1;
-	while (*p) {
-		if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
-			force_quotes = 1;
-		else if (*p == '"')
-			n++;
-		else if (*p == '\\') {
-			int count = 0;
-			while (*p == '\\') {
-				count++;
-				p++;
-				len++;
-			}
-			if (*p == '"' || !*p)
-				n += count*2 + 1;
-			continue;
-		}
-		len++;
-		p++;
-	}
-	if (!force_quotes && n == 0)
-		return arg;
-
-	/* insert \ where necessary */
-	d = q = xmalloc(st_add3(len, n, 3));
-	*d++ = '"';
-	while (*arg) {
-		if (*arg == '"')
-			*d++ = '\\';
-		else if (*arg == '\\') {
-			int count = 0;
-			while (*arg == '\\') {
-				count++;
-				*d++ = *arg++;
-			}
-			if (*arg == '"' || !*arg) {
-				while (count-- > 0)
-					*d++ = '\\';
-				/* don't escape the surrounding end quote */
-				if (!*arg)
-					break;
-				*d++ = '\\';
-			}
-		}
-		*d++ = *arg++;
-	}
-	*d++ = '"';
-	*d++ = '\0';
-	return q;
-}
-
-#include "quote.h"
-
-static const char *quote_arg_msys2(const char *arg)
-{
-	struct strbuf buf = STRBUF_INIT;
-	const char *p2 = arg, *p;
-
-	for (p = arg; *p; p++) {
-		int ws = isspace(*p);
-		if (!ws && *p != '\\' && *p != '"' && *p != '{' && *p != '\'' &&
-		    *p != '?' && *p != '*' && *p != '~')
-			continue;
-		if (!buf.len)
-			strbuf_addch(&buf, '"');
-		if (p != p2)
-			strbuf_add(&buf, p2, p - p2);
-		if (*p == '\\' || *p == '"')
-			strbuf_addch(&buf, '\\');
-		p2 = p;
-	}
-
-	if (p == arg)
-		strbuf_addch(&buf, '"');
-	else if (!buf.len)
-		return arg;
-	else
-		strbuf_add(&buf, p2, p - p2);
-
-	strbuf_addch(&buf, '"');
-	return strbuf_detach(&buf, 0);
-}
-
-static const char *parse_interpreter(const char *cmd)
-{
-	static char buf[100];
-	char *p, *opt;
-	int n, fd;
-
-	/* don't even try a .exe */
-	n = strlen(cmd);
-	if (n >= 4 && !strcasecmp(cmd+n-4, ".exe"))
-		return NULL;
-
-	fd = open(cmd, O_RDONLY);
-	if (fd < 0)
-		return NULL;
-	n = read(fd, buf, sizeof(buf)-1);
-	close(fd);
-	if (n < 4)	/* at least '#!/x' and not error */
-		return NULL;
-
-	if (buf[0] != '#' || buf[1] != '!')
-		return NULL;
-	buf[n] = '\0';
-	p = buf + strcspn(buf, "\r\n");
-	if (!*p)
-		return NULL;
-
-	*p = '\0';
-	if (!(p = strrchr(buf+2, '/')) && !(p = strrchr(buf+2, '\\')))
-		return NULL;
-	/* strip options */
-	if ((opt = strchr(p+1, ' ')))
-		*opt = '\0';
-	return p+1;
-}
-
-/*
- * exe_only means that we only want to detect .exe files, but not scripts
- * (which do not have an extension)
- */
-static char *lookup_prog(const char *dir, int dirlen, const char *cmd,
-			 int isexe, int exe_only)
-{
-	char path[MAX_PATH];
-	wchar_t wpath[MAX_PATH];
-	snprintf(path, sizeof(path), "%.*s\\%s.exe", dirlen, dir, cmd);
-
-	if (xutftowcs_path(wpath, path) < 0)
-		return NULL;
-
-	if (!isexe && _waccess(wpath, F_OK) == 0)
-		return xstrdup(path);
-	wpath[wcslen(wpath)-4] = '\0';
-	if ((!exe_only || isexe) && _waccess(wpath, F_OK) == 0) {
-		if (!(GetFileAttributesW(wpath) & FILE_ATTRIBUTE_DIRECTORY)) {
-			path[strlen(path)-4] = '\0';
-			return xstrdup(path);
-		}
-	}
-	return NULL;
-}
-
-/*
- * Determines the absolute path of cmd using the split path in path.
- * If cmd contains a slash or backslash, no lookup is performed.
- */
-static char *path_lookup(const char *cmd, int exe_only)
-{
-	const char *path;
-	char *prog = NULL;
-	int len = strlen(cmd);
-	int isexe = len >= 4 && !strcasecmp(cmd+len-4, ".exe");
-
-	if (strpbrk(cmd, "/\\"))
-		return xstrdup(cmd);
-
-	path = mingw_getenv("PATH");
-	if (!path)
-		return NULL;
-
-	while (!prog) {
-		const char *sep = strchrnul(path, ';');
-		int dirlen = sep - path;
-		if (dirlen)
-			prog = lookup_prog(path, dirlen, cmd, isexe, exe_only);
-		if (!*sep)
-			break;
-		path = sep + 1;
-	}
-
-	return prog;
-}
-
-static const wchar_t *wcschrnul(const wchar_t *s, wchar_t c)
-{
-	while (*s && *s != c)
-		s++;
-	return s;
-}
-
-/* Compare only keys */
-static int wenvcmp(const void *a, const void *b)
-{
-	wchar_t *p = *(wchar_t **)a, *q = *(wchar_t **)b;
-	size_t p_len, q_len;
-
-	/* Find the keys */
-	p_len = wcschrnul(p, L'=') - p;
-	q_len = wcschrnul(q, L'=') - q;
-
-	/* If the length differs, include the shorter key's NUL */
-	if (p_len < q_len)
-		p_len++;
-	else if (p_len > q_len)
-		p_len = q_len + 1;
-
-	return _wcsnicmp(p, q, p_len);
-}
-
-/*
- * Build an environment block combining the inherited environment
- * merged with the given list of settings.
- *
- * Values of the form "KEY=VALUE" in deltaenv override inherited values.
- * Values of the form "KEY" in deltaenv delete inherited values.
- *
- * Multiple entries in deltaenv for the same key are explicitly allowed.
- *
- * We return a contiguous block of UNICODE strings with a final trailing
- * zero word.
- */
-static wchar_t *make_environment_block(char **deltaenv)
-{
-	wchar_t *wenv = GetEnvironmentStringsW(), *wdeltaenv, *result, *p;
-	size_t wlen, s, delta_size, size;
-
-	wchar_t **array = NULL;
-	size_t alloc = 0, nr = 0, i;
-
-	size = 1; /* for extra NUL at the end */
-
-	/* If there is no deltaenv to apply, simply return a copy. */
-	if (!deltaenv || !*deltaenv) {
-		for (p = wenv; p && *p; ) {
-			size_t s = wcslen(p) + 1;
-			size += s;
-			p += s;
-		}
-
-		ALLOC_ARRAY(result, size);
-		COPY_ARRAY(result, wenv, size);
-		FreeEnvironmentStringsW(wenv);
-		return result;
-	}
-
-	/*
-	 * If there is a deltaenv, let's accumulate all keys into `array`,
-	 * sort them using the stable git_stable_qsort() and then copy,
-	 * skipping duplicate keys
-	 */
-	for (p = wenv; p && *p; ) {
-		ALLOC_GROW(array, nr + 1, alloc);
-		s = wcslen(p) + 1;
-		array[nr++] = p;
-		p += s;
-		size += s;
-	}
-
-	/* (over-)assess size needed for wchar version of deltaenv */
-	for (delta_size = 0, i = 0; deltaenv[i]; i++)
-		delta_size += strlen(deltaenv[i]) * 2 + 1;
-	ALLOC_ARRAY(wdeltaenv, delta_size);
-
-	/* convert the deltaenv, appending to array */
-	for (i = 0, p = wdeltaenv; deltaenv[i]; i++) {
-		ALLOC_GROW(array, nr + 1, alloc);
-		wlen = xutftowcs(p, deltaenv[i], wdeltaenv + delta_size - p);
-		array[nr++] = p;
-		p += wlen + 1;
-	}
-
-	git_stable_qsort(array, nr, sizeof(*array), wenvcmp);
-	ALLOC_ARRAY(result, size + delta_size);
-
-	for (p = result, i = 0; i < nr; i++) {
-		/* Skip any duplicate keys; last one wins */
-		while (i + 1 < nr && !wenvcmp(array + i, array + i + 1))
-		       i++;
-
-		/* Skip "to delete" entry */
-		if (!wcschr(array[i], L'='))
-			continue;
-
-		size = wcslen(array[i]) + 1;
-		COPY_ARRAY(p, array[i], size);
-		p += size;
-	}
-	*p = L'\0';
-
-	free(array);
-	free(wdeltaenv);
-	FreeEnvironmentStringsW(wenv);
-	return result;
-}
-
-static void do_unset_environment_variables(void)
-{
-	static int done;
-	char *p = unset_environment_variables;
-
-	if (done || !p)
-		return;
-	done = 1;
-
-	for (;;) {
-		char *comma = strchr(p, ',');
-
-		if (comma)
-			*comma = '\0';
-		unsetenv(p);
-		if (!comma)
-			break;
-		p = comma + 1;
-	}
-}
-
-struct pinfo_t {
-	struct pinfo_t *next;
-	pid_t pid;
-	HANDLE proc;
-};
-static struct pinfo_t *pinfo = NULL;
-CRITICAL_SECTION pinfo_cs;
-
-/* Used to match and chomp off path components */
-static inline int match_last_path_component(const char *path, size_t *len,
-					    const char *component)
-{
-	size_t component_len = strlen(component);
-	if (*len < component_len + 1 ||
-	    !is_dir_sep(path[*len - component_len - 1]) ||
-	    fspathncmp(path + *len - component_len, component, component_len))
-		return 0;
-	*len -= component_len + 1;
-	/* chomp off repeated dir separators */
-	while (*len > 0 && is_dir_sep(path[*len - 1]))
-		(*len)--;
-	return 1;
-}
-
-static int is_msys2_sh(const char *cmd)
-{
-	if (!cmd)
-		return 0;
-
-	if (!strcmp(cmd, "sh")) {
-		static int ret = -1;
-		char *p;
-
-		if (ret >= 0)
-			return ret;
-
-		p = path_lookup(cmd, 0);
-		if (!p)
-			ret = 0;
-		else {
-			size_t len = strlen(p);
-
-			ret = match_last_path_component(p, &len, "sh.exe") &&
-				match_last_path_component(p, &len, "bin") &&
-				match_last_path_component(p, &len, "usr");
-			free(p);
-		}
-		return ret;
-	}
-
-	if (ends_with(cmd, "\\sh.exe")) {
-		static char *sh;
-
-		if (!sh)
-			sh = path_lookup("sh", 0);
-
-		return !fspathcmp(cmd, sh);
-	}
-
-	return 0;
-}
-
-static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaenv,
-			      const char *dir,
-			      int prepend_cmd, int fhin, int fhout, int fherr)
-{
-	static int restrict_handle_inheritance = -1;
-	STARTUPINFOEXW si;
-	PROCESS_INFORMATION pi;
-	LPPROC_THREAD_ATTRIBUTE_LIST attr_list = NULL;
-	HANDLE stdhandles[3];
-	DWORD stdhandles_count = 0;
-	SIZE_T size;
-	struct strbuf args;
-	wchar_t wcmd[MAX_PATH], wdir[MAX_PATH], *wargs, *wenvblk = NULL;
-	unsigned flags = CREATE_UNICODE_ENVIRONMENT;
-	BOOL ret;
-	HANDLE cons;
-	const char *(*quote_arg)(const char *arg) =
-		is_msys2_sh(cmd ? cmd : *argv) ?
-		quote_arg_msys2 : quote_arg_msvc;
-	const char *strace_env;
-
-	/* Make sure to override previous errors, if any */
-	errno = 0;
-
-	if (restrict_handle_inheritance < 0)
-		restrict_handle_inheritance = core_restrict_inherited_handles;
-	/*
-	 * The following code to restrict which handles are inherited seems
-	 * to work properly only on Windows 7 and later, so let's disable it
-	 * on Windows Vista and 2008.
-	 */
-	if (restrict_handle_inheritance < 0)
-		restrict_handle_inheritance = GetVersion() >> 16 >= 7601;
-
-	do_unset_environment_variables();
-
-	/* Determine whether or not we are associated to a console */
-	cons = CreateFileW(L"CONOUT$", GENERIC_WRITE,
-			FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
-			FILE_ATTRIBUTE_NORMAL, NULL);
-	if (cons == INVALID_HANDLE_VALUE) {
-		/* There is no console associated with this process.
-		 * Since the child is a console process, Windows
-		 * would normally create a console window. But
-		 * since we'll be redirecting std streams, we do
-		 * not need the console.
-		 * It is necessary to use DETACHED_PROCESS
-		 * instead of CREATE_NO_WINDOW to make ssh
-		 * recognize that it has no console.
-		 */
-		flags |= DETACHED_PROCESS;
-	} else {
-		/* There is already a console. If we specified
-		 * DETACHED_PROCESS here, too, Windows would
-		 * disassociate the child from the console.
-		 * The same is true for CREATE_NO_WINDOW.
-		 * Go figure!
-		 */
-		CloseHandle(cons);
-	}
-	memset(&si, 0, sizeof(si));
-	si.StartupInfo.cb = sizeof(si);
-	si.StartupInfo.hStdInput = winansi_get_osfhandle(fhin);
-	si.StartupInfo.hStdOutput = winansi_get_osfhandle(fhout);
-	si.StartupInfo.hStdError = winansi_get_osfhandle(fherr);
-
-	/* The list of handles cannot contain duplicates */
-	if (si.StartupInfo.hStdInput != INVALID_HANDLE_VALUE)
-		stdhandles[stdhandles_count++] = si.StartupInfo.hStdInput;
-	if (si.StartupInfo.hStdOutput != INVALID_HANDLE_VALUE &&
-	    si.StartupInfo.hStdOutput != si.StartupInfo.hStdInput)
-		stdhandles[stdhandles_count++] = si.StartupInfo.hStdOutput;
-	if (si.StartupInfo.hStdError != INVALID_HANDLE_VALUE &&
-	    si.StartupInfo.hStdError != si.StartupInfo.hStdInput &&
-	    si.StartupInfo.hStdError != si.StartupInfo.hStdOutput)
-		stdhandles[stdhandles_count++] = si.StartupInfo.hStdError;
-	if (stdhandles_count)
-		si.StartupInfo.dwFlags |= STARTF_USESTDHANDLES;
-
-	if (*argv && !strcmp(cmd, *argv))
-		wcmd[0] = L'\0';
-	else if (xutftowcs_path(wcmd, cmd) < 0)
-		return -1;
-	if (dir && xutftowcs_path(wdir, dir) < 0)
-		return -1;
-
-	/* concatenate argv, quoting args as we go */
-	strbuf_init(&args, 0);
-	if (prepend_cmd) {
-		char *quoted = (char *)quote_arg(cmd);
-		strbuf_addstr(&args, quoted);
-		if (quoted != cmd)
-			free(quoted);
-	}
-	for (; *argv; argv++) {
-		char *quoted = (char *)quote_arg(*argv);
-		if (*args.buf)
-			strbuf_addch(&args, ' ');
-		strbuf_addstr(&args, quoted);
-		if (quoted != *argv)
-			free(quoted);
-	}
-
-	strace_env = getenv("GIT_STRACE_COMMANDS");
-	if (strace_env) {
-		char *p = path_lookup("strace.exe", 1);
-		if (!p)
-			return error("strace not found!");
-		if (xutftowcs_path(wcmd, p) < 0) {
-			free(p);
-			return -1;
-		}
-		free(p);
-		if (!strcmp("1", strace_env) ||
-		    !strcasecmp("yes", strace_env) ||
-		    !strcasecmp("true", strace_env))
-			strbuf_insert(&args, 0, "strace ", 7);
-		else {
-			const char *quoted = quote_arg(strace_env);
-			struct strbuf buf = STRBUF_INIT;
-			strbuf_addf(&buf, "strace -o %s ", quoted);
-			if (quoted != strace_env)
-				free((char *)quoted);
-			strbuf_insert(&args, 0, buf.buf, buf.len);
-			strbuf_release(&buf);
-		}
-	}
-
-	ALLOC_ARRAY(wargs, st_add(st_mult(2, args.len), 1));
-	xutftowcs(wargs, args.buf, 2 * args.len + 1);
-	strbuf_release(&args);
-
-	wenvblk = make_environment_block(deltaenv);
-
-	memset(&pi, 0, sizeof(pi));
-	if (restrict_handle_inheritance && stdhandles_count &&
-	    (InitializeProcThreadAttributeList(NULL, 1, 0, &size) ||
-	     GetLastError() == ERROR_INSUFFICIENT_BUFFER) &&
-	    (attr_list = (LPPROC_THREAD_ATTRIBUTE_LIST)
-			(HeapAlloc(GetProcessHeap(), 0, size))) &&
-	    InitializeProcThreadAttributeList(attr_list, 1, 0, &size) &&
-	    UpdateProcThreadAttribute(attr_list, 0,
-				      PROC_THREAD_ATTRIBUTE_HANDLE_LIST,
-				      stdhandles,
-				      stdhandles_count * sizeof(HANDLE),
-				      NULL, NULL)) {
-		si.lpAttributeList = attr_list;
-		flags |= EXTENDED_STARTUPINFO_PRESENT;
-	}
-
-	ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL,
-			     stdhandles_count ? TRUE : FALSE,
-			     flags, wenvblk, dir ? wdir : NULL,
-			     &si.StartupInfo, &pi);
-
-	/*
-	 * On Windows 2008 R2, it seems that specifying certain types of handles
-	 * (such as FILE_TYPE_CHAR or FILE_TYPE_PIPE) will always produce an
-	 * error. Rather than playing finicky and fragile games, let's just try
-	 * to detect this situation and simply try again without restricting any
-	 * handle inheritance. This is still better than failing to create
-	 * processes.
-	 */
-	if (!ret && restrict_handle_inheritance && stdhandles_count) {
-		DWORD err = GetLastError();
-		struct strbuf buf = STRBUF_INIT;
-
-		if (err != ERROR_NO_SYSTEM_RESOURCES &&
-		    /*
-		     * On Windows 7 and earlier, handles on pipes and character
-		     * devices are inherited automatically, and cannot be
-		     * specified in the thread handle list. Rather than trying
-		     * to catch each and every corner case (and running the
-		     * chance of *still* forgetting a few), let's just fall
-		     * back to creating the process without trying to limit the
-		     * handle inheritance.
-		     */
-		    !(err == ERROR_INVALID_PARAMETER &&
-		      GetVersion() >> 16 < 9200) &&
-		    !getenv("SUPPRESS_HANDLE_INHERITANCE_WARNING")) {
-			DWORD fl = 0;
-			int i;
-
-			setenv("SUPPRESS_HANDLE_INHERITANCE_WARNING", "1", 1);
-
-			for (i = 0; i < stdhandles_count; i++) {
-				HANDLE h = stdhandles[i];
-				strbuf_addf(&buf, "handle #%d: %p (type %lx, "
-					    "handle info (%d) %lx\n", i, h,
-					    GetFileType(h),
-					    GetHandleInformation(h, &fl),
-					    fl);
-			}
-			strbuf_addstr(&buf, "\nThis is a bug; please report it "
-				      "at\nhttps://github.com/git-for-windows/"
-				      "git/issues/new\n\n"
-				      "To suppress this warning, please set "
-				      "the environment variable\n\n"
-				      "\tSUPPRESS_HANDLE_INHERITANCE_WARNING=1"
-				      "\n");
-		}
-		restrict_handle_inheritance = 0;
-		flags &= ~EXTENDED_STARTUPINFO_PRESENT;
-		ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL,
-				     TRUE, flags, wenvblk, dir ? wdir : NULL,
-				     &si.StartupInfo, &pi);
-		if (!ret)
-			errno = err_win_to_posix(GetLastError());
-		if (ret && buf.len) {
-			warning("failed to restrict file handles (%ld)\n\n%s",
-				err, buf.buf);
-		}
-		strbuf_release(&buf);
-	} else if (!ret)
-		errno = err_win_to_posix(GetLastError());
-
-	if (si.lpAttributeList)
-		DeleteProcThreadAttributeList(si.lpAttributeList);
-	if (attr_list)
-		HeapFree(GetProcessHeap(), 0, attr_list);
-
-	free(wenvblk);
-	free(wargs);
-
-	if (!ret)
-		return -1;
-
-	CloseHandle(pi.hThread);
-
-	/*
-	 * The process ID is the human-readable identifier of the process
-	 * that we want to present in log and error messages. The handle
-	 * is not useful for this purpose. But we cannot close it, either,
-	 * because it is not possible to turn a process ID into a process
-	 * handle after the process terminated.
-	 * Keep the handle in a list for waitpid.
-	 */
-	EnterCriticalSection(&pinfo_cs);
-	{
-		struct pinfo_t *info = xmalloc(sizeof(struct pinfo_t));
-		info->pid = pi.dwProcessId;
-		info->proc = pi.hProcess;
-		info->next = pinfo;
-		pinfo = info;
-	}
-	LeaveCriticalSection(&pinfo_cs);
-
-	return (pid_t)pi.dwProcessId;
-}
-
-static pid_t mingw_spawnv(const char *cmd, const char **argv, int prepend_cmd)
-{
-	return mingw_spawnve_fd(cmd, argv, NULL, NULL, prepend_cmd, 0, 1, 2);
-}
-
-pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **deltaenv,
-		     const char *dir,
-		     int fhin, int fhout, int fherr)
-{
-	pid_t pid;
-	char *prog = path_lookup(cmd, 0);
-
-	if (!prog) {
-		errno = ENOENT;
-		pid = -1;
-	}
-	else {
-		const char *interpr = parse_interpreter(prog);
-
-		if (interpr) {
-			const char *argv0 = argv[0];
-			char *iprog = path_lookup(interpr, 1);
-			argv[0] = prog;
-			if (!iprog) {
-				errno = ENOENT;
-				pid = -1;
-			}
-			else {
-				pid = mingw_spawnve_fd(iprog, argv, deltaenv, dir, 1,
-						       fhin, fhout, fherr);
-				free(iprog);
-			}
-			argv[0] = argv0;
-		}
-		else
-			pid = mingw_spawnve_fd(prog, argv, deltaenv, dir, 0,
-					       fhin, fhout, fherr);
-		free(prog);
-	}
-	return pid;
-}
-
-static int try_shell_exec(const char *cmd, char *const *argv)
-{
-	const char *interpr = parse_interpreter(cmd);
-	char *prog;
-	int pid = 0;
-
-	if (!interpr)
-		return 0;
-	prog = path_lookup(interpr, 1);
-	if (prog) {
-		int exec_id;
-		int argc = 0;
-#ifndef _MSC_VER
-		const
-#endif
-		char **argv2;
-		while (argv[argc]) argc++;
-		ALLOC_ARRAY(argv2, argc + 1);
-		argv2[0] = (char *)cmd;	/* full path to the script file */
-		COPY_ARRAY(&argv2[1], &argv[1], argc);
-		exec_id = trace2_exec(prog, argv2);
-		pid = mingw_spawnv(prog, argv2, 1);
-		if (pid >= 0) {
-			int status;
-			if (waitpid(pid, &status, 0) < 0)
-				status = 255;
-			trace2_exec_result(exec_id, status);
-			exit(status);
-		}
-		trace2_exec_result(exec_id, -1);
-		pid = 1;	/* indicate that we tried but failed */
-		free(prog);
-		free(argv2);
-	}
-	return pid;
-}
-
-int mingw_execv(const char *cmd, char *const *argv)
-{
-	/* check if git_command is a shell script */
-	if (!try_shell_exec(cmd, argv)) {
-		int pid, status;
-		int exec_id;
-
-		exec_id = trace2_exec(cmd, (const char **)argv);
-		pid = mingw_spawnv(cmd, (const char **)argv, 0);
-		if (pid < 0) {
-			trace2_exec_result(exec_id, -1);
-			return -1;
-		}
-		if (waitpid(pid, &status, 0) < 0)
-			status = 255;
-		trace2_exec_result(exec_id, status);
-		exit(status);
-	}
-	return -1;
-}
-
-int mingw_execvp(const char *cmd, char *const *argv)
-{
-	char *prog = path_lookup(cmd, 0);
-
-	if (prog) {
-		mingw_execv(prog, argv);
-		free(prog);
-	} else
-		errno = ENOENT;
-
-	return -1;
-}
-
-int mingw_kill(pid_t pid, int sig)
-{
-	if (pid > 0 && sig == SIGTERM) {
-		HANDLE h = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
-
-		if (TerminateProcess(h, -1)) {
-			CloseHandle(h);
-			return 0;
-		}
-
-		errno = err_win_to_posix(GetLastError());
-		CloseHandle(h);
-		return -1;
-	} else if (pid > 0 && sig == 0) {
-		HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
-		if (h) {
-			CloseHandle(h);
-			return 0;
-		}
-	}
-
-	errno = EINVAL;
-	return -1;
-}
-
-/*
- * UTF-8 versions of getenv(), putenv() and unsetenv().
- * Internally, they use the CRT's stock UNICODE routines
- * to avoid data loss.
- */
-char *mingw_getenv(const char *name)
-{
-#define GETENV_MAX_RETAIN 64
-	static char *values[GETENV_MAX_RETAIN];
-	static int value_counter;
-	int len_key, len_value;
-	wchar_t *w_key;
-	char *value;
-	wchar_t w_value[32768];
-
-	if (!name || !*name)
-		return NULL;
-
-	len_key = strlen(name) + 1;
-	/* We cannot use xcalloc() here because that uses getenv() itself */
-	w_key = calloc(len_key, sizeof(wchar_t));
-	if (!w_key)
-		die("Out of memory, (tried to allocate %u wchar_t's)", len_key);
-	xutftowcs(w_key, name, len_key);
-	/* GetEnvironmentVariableW() only sets the last error upon failure */
-	SetLastError(ERROR_SUCCESS);
-	len_value = GetEnvironmentVariableW(w_key, w_value, ARRAY_SIZE(w_value));
-	if (!len_value && GetLastError() == ERROR_ENVVAR_NOT_FOUND) {
-		free(w_key);
-		return NULL;
-	}
-	free(w_key);
-
-	len_value = len_value * 3 + 1;
-	/* We cannot use xcalloc() here because that uses getenv() itself */
-	value = calloc(len_value, sizeof(char));
-	if (!value)
-		die("Out of memory, (tried to allocate %u bytes)", len_value);
-	xwcstoutf(value, w_value, len_value);
-
-	/*
-	 * We return `value` which is an allocated value and the caller is NOT
-	 * expecting to have to free it, so we keep a round-robin array,
-	 * invalidating the buffer after GETENV_MAX_RETAIN getenv() calls.
-	 */
-	free(values[value_counter]);
-	values[value_counter++] = value;
-	if (value_counter >= ARRAY_SIZE(values))
-		value_counter = 0;
-
-	return value;
-}
-
-int mingw_putenv(const char *namevalue)
-{
-	int size;
-	wchar_t *wide, *equal;
-	BOOL result;
-
-	if (!namevalue || !*namevalue)
-		return 0;
-
-	size = strlen(namevalue) * 2 + 1;
-	wide = calloc(size, sizeof(wchar_t));
-	if (!wide)
-		die("Out of memory, (tried to allocate %u wchar_t's)", size);
-	xutftowcs(wide, namevalue, size);
-	equal = wcschr(wide, L'=');
-	if (!equal)
-		result = SetEnvironmentVariableW(wide, NULL);
-	else {
-		*equal = L'\0';
-		result = SetEnvironmentVariableW(wide, equal + 1);
-	}
-	free(wide);
-
-	if (!result)
-		errno = err_win_to_posix(GetLastError());
-
-	return result ? 0 : -1;
-}
-
-static void ensure_socket_initialization(void)
-{
-	WSADATA wsa;
-	static int initialized = 0;
-
-	if (initialized)
-		return;
-
-	if (WSAStartup(MAKEWORD(2,2), &wsa))
-		die("unable to initialize winsock subsystem, error %d",
-			WSAGetLastError());
-
-	atexit((void(*)(void)) WSACleanup);
-	initialized = 1;
-}
-
-#undef gethostname
-int mingw_gethostname(char *name, int namelen)
-{
-    ensure_socket_initialization();
-    return gethostname(name, namelen);
-}
-
-#undef gethostbyname
-struct hostent *mingw_gethostbyname(const char *host)
-{
-	ensure_socket_initialization();
-	return gethostbyname(host);
-}
-
-#undef getaddrinfo
-int mingw_getaddrinfo(const char *node, const char *service,
-		      const struct addrinfo *hints, struct addrinfo **res)
-{
-	ensure_socket_initialization();
-	return getaddrinfo(node, service, hints, res);
-}
-
-int mingw_socket(int domain, int type, int protocol)
-{
-	int sockfd;
-	SOCKET s;
-
-	ensure_socket_initialization();
-	s = WSASocket(domain, type, protocol, NULL, 0, 0);
-	if (s == INVALID_SOCKET) {
-		/*
-		 * WSAGetLastError() values are regular BSD error codes
-		 * biased by WSABASEERR.
-		 * However, strerror() does not know about networking
-		 * specific errors, which are values beginning at 38 or so.
-		 * Therefore, we choose to leave the biased error code
-		 * in errno so that _if_ someone looks up the code somewhere,
-		 * then it is at least the number that are usually listed.
-		 */
-		errno = WSAGetLastError();
-		return -1;
-	}
-	/* convert into a file descriptor */
-	if ((sockfd = _open_osfhandle(s, O_RDWR|O_BINARY)) < 0) {
-		closesocket(s);
-		return error("unable to make a socket file descriptor: %s",
-			strerror(errno));
-	}
-	return sockfd;
-}
-
-#undef connect
-int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
-{
-	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
-	return connect(s, sa, sz);
-}
-
-#undef bind
-int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
-{
-	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
-	return bind(s, sa, sz);
-}
-
-#undef setsockopt
-int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
-{
-	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
-	return setsockopt(s, lvl, optname, (const char*)optval, optlen);
-}
-
-#undef shutdown
-int mingw_shutdown(int sockfd, int how)
-{
-	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
-	return shutdown(s, how);
-}
-
-#undef listen
-int mingw_listen(int sockfd, int backlog)
-{
-	SOCKET s = (SOCKET)_get_osfhandle(sockfd);
-	return listen(s, backlog);
-}
-
-#undef accept
-int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
-{
-	int sockfd2;
-
-	SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
-	SOCKET s2 = accept(s1, sa, sz);
-
-	/* convert into a file descriptor */
-	if ((sockfd2 = _open_osfhandle(s2, O_RDWR|O_BINARY)) < 0) {
-		int err = errno;
-		closesocket(s2);
-		return error("unable to make a socket file descriptor: %s",
-			strerror(err));
-	}
-	return sockfd2;
-}
-
-#undef rename
-int mingw_rename(const char *pold, const char *pnew)
-{
-	DWORD attrs, gle;
-	int tries = 0;
-	wchar_t wpold[MAX_PATH], wpnew[MAX_PATH];
-	if (xutftowcs_path(wpold, pold) < 0 || xutftowcs_path(wpnew, pnew) < 0)
-		return -1;
-
-	/*
-	 * Try native rename() first to get errno right.
-	 * It is based on MoveFile(), which cannot overwrite existing files.
-	 */
-	if (!_wrename(wpold, wpnew))
-		return 0;
-	if (errno != EEXIST)
-		return -1;
-repeat:
-	if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
-		return 0;
-	/* TODO: translate more errors */
-	gle = GetLastError();
-	if (gle == ERROR_ACCESS_DENIED &&
-	    (attrs = GetFileAttributesW(wpnew)) != INVALID_FILE_ATTRIBUTES) {
-		if (attrs & FILE_ATTRIBUTE_DIRECTORY) {
-			DWORD attrsold = GetFileAttributesW(wpold);
-			if (attrsold == INVALID_FILE_ATTRIBUTES ||
-			    !(attrsold & FILE_ATTRIBUTE_DIRECTORY))
-				errno = EISDIR;
-			else if (!_wrmdir(wpnew))
-				goto repeat;
-			return -1;
-		}
-		if ((attrs & FILE_ATTRIBUTE_READONLY) &&
-		    SetFileAttributesW(wpnew, attrs & ~FILE_ATTRIBUTE_READONLY)) {
-			if (MoveFileExW(wpold, wpnew, MOVEFILE_REPLACE_EXISTING))
-				return 0;
-			gle = GetLastError();
-			/* revert file attributes on failure */
-			SetFileAttributesW(wpnew, attrs);
-		}
-	}
-	if (tries < ARRAY_SIZE(delay) && gle == ERROR_ACCESS_DENIED) {
-		/*
-		 * We assume that some other process had the source or
-		 * destination file open at the wrong moment and retry.
-		 * In order to give the other process a higher chance to
-		 * complete its operation, we give up our time slice now.
-		 * If we have to retry again, we do sleep a bit.
-		 */
-		Sleep(delay[tries]);
-		tries++;
-		goto repeat;
-	}
-	if (gle == ERROR_ACCESS_DENIED &&
-	       ask_yes_no_if_possible("Rename from '%s' to '%s' failed. "
-		       "Should I try again?", pold, pnew))
-		goto repeat;
-
-	errno = EACCES;
-	return -1;
-}
-
-/*
- * Note that this doesn't return the actual pagesize, but
- * the allocation granularity. If future Windows specific git code
- * needs the real getpagesize function, we need to find another solution.
- */
-int mingw_getpagesize(void)
-{
-	SYSTEM_INFO si;
-	GetSystemInfo(&si);
-	return si.dwAllocationGranularity;
-}
-
-/* See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724435.aspx */
-enum EXTENDED_NAME_FORMAT {
-	NameDisplay = 3,
-	NameUserPrincipal = 8
-};
-
-static char *get_extended_user_info(enum EXTENDED_NAME_FORMAT type)
-{
-	DECLARE_PROC_ADDR(secur32.dll, BOOL, GetUserNameExW,
-		enum EXTENDED_NAME_FORMAT, LPCWSTR, PULONG);
-	static wchar_t wbuffer[1024];
-	DWORD len;
-
-	if (!INIT_PROC_ADDR(GetUserNameExW))
-		return NULL;
-
-	len = ARRAY_SIZE(wbuffer);
-	if (GetUserNameExW(type, wbuffer, &len)) {
-		char *converted = xmalloc((len *= 3));
-		if (xwcstoutf(converted, wbuffer, len) >= 0)
-			return converted;
-		free(converted);
-	}
-
-	return NULL;
-}
-
-char *mingw_query_user_email(void)
-{
-	return get_extended_user_info(NameUserPrincipal);
-}
-
-struct passwd *getpwuid(int uid)
-{
-	static unsigned initialized;
-	static char user_name[100];
-	static struct passwd *p;
-	wchar_t buf[100];
-	DWORD len;
-
-	if (initialized)
-		return p;
-
-	len = ARRAY_SIZE(buf);
-	if (!GetUserNameW(buf, &len)) {
-		initialized = 1;
-		return NULL;
-	}
-
-	if (xwcstoutf(user_name, buf, sizeof(user_name)) < 0) {
-		initialized = 1;
-		return NULL;
-	}
-
-	p = xmalloc(sizeof(*p));
-	p->pw_name = user_name;
-	p->pw_gecos = get_extended_user_info(NameDisplay);
-	if (!p->pw_gecos)
-		p->pw_gecos = "unknown";
-	p->pw_dir = NULL;
-
-	initialized = 1;
-	return p;
-}
-
-static HANDLE timer_event;
-static HANDLE timer_thread;
-static int timer_interval;
-static int one_shot;
-static sig_handler_t timer_fn = SIG_DFL, sigint_fn = SIG_DFL;
-
-/* The timer works like this:
- * The thread, ticktack(), is a trivial routine that most of the time
- * only waits to receive the signal to terminate. The main thread tells
- * the thread to terminate by setting the timer_event to the signalled
- * state.
- * But ticktack() interrupts the wait state after the timer's interval
- * length to call the signal handler.
- */
-
-static unsigned __stdcall ticktack(void *dummy)
-{
-	while (WaitForSingleObject(timer_event, timer_interval) == WAIT_TIMEOUT) {
-		mingw_raise(SIGALRM);
-		if (one_shot)
-			break;
-	}
-	return 0;
-}
-
-static int start_timer_thread(void)
-{
-	timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
-	if (timer_event) {
-		timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
-		if (!timer_thread )
-			return errno = ENOMEM,
-				error("cannot start timer thread");
-	} else
-		return errno = ENOMEM,
-			error("cannot allocate resources for timer");
-	return 0;
-}
-
-static void stop_timer_thread(void)
-{
-	if (timer_event)
-		SetEvent(timer_event);	/* tell thread to terminate */
-	if (timer_thread) {
-		int rc = WaitForSingleObject(timer_thread, 10000);
-		if (rc == WAIT_TIMEOUT)
-			error("timer thread did not terminate timely");
-		else if (rc != WAIT_OBJECT_0)
-			error("waiting for timer thread failed: %lu",
-			      GetLastError());
-		CloseHandle(timer_thread);
-	}
-	if (timer_event)
-		CloseHandle(timer_event);
-	timer_event = NULL;
-	timer_thread = NULL;
-}
-
-static inline int is_timeval_eq(const struct timeval *i1, const struct timeval *i2)
-{
-	return i1->tv_sec == i2->tv_sec && i1->tv_usec == i2->tv_usec;
-}
-
-int setitimer(int type, struct itimerval *in, struct itimerval *out)
-{
-	static const struct timeval zero;
-	static int atexit_done;
-
-	if (out != NULL)
-		return errno = EINVAL,
-			error("setitimer param 3 != NULL not implemented");
-	if (!is_timeval_eq(&in->it_interval, &zero) &&
-	    !is_timeval_eq(&in->it_interval, &in->it_value))
-		return errno = EINVAL,
-			error("setitimer: it_interval must be zero or eq it_value");
-
-	if (timer_thread)
-		stop_timer_thread();
-
-	if (is_timeval_eq(&in->it_value, &zero) &&
-	    is_timeval_eq(&in->it_interval, &zero))
-		return 0;
-
-	timer_interval = in->it_value.tv_sec * 1000 + in->it_value.tv_usec / 1000;
-	one_shot = is_timeval_eq(&in->it_interval, &zero);
-	if (!atexit_done) {
-		atexit(stop_timer_thread);
-		atexit_done = 1;
-	}
-	return start_timer_thread();
-}
-
-int sigaction(int sig, struct sigaction *in, struct sigaction *out)
-{
-	if (sig != SIGALRM)
-		return errno = EINVAL,
-			error("sigaction only implemented for SIGALRM");
-	if (out != NULL)
-		return errno = EINVAL,
-			error("sigaction: param 3 != NULL not implemented");
-
-	timer_fn = in->sa_handler;
-	return 0;
-}
-
-#undef signal
-sig_handler_t mingw_signal(int sig, sig_handler_t handler)
-{
-	sig_handler_t old;
-
-	switch (sig) {
-	case SIGALRM:
-		old = timer_fn;
-		timer_fn = handler;
-		break;
-
-	case SIGINT:
-		old = sigint_fn;
-		sigint_fn = handler;
-		break;
-
-	default:
-		return signal(sig, handler);
-	}
-
-	return old;
-}
-
-#undef raise
-int mingw_raise(int sig)
-{
-	switch (sig) {
-	case SIGALRM:
-		if (timer_fn == SIG_DFL) {
-			if (isatty(STDERR_FILENO))
-				fputs("Alarm clock\n", stderr);
-			exit(128 + SIGALRM);
-		} else if (timer_fn != SIG_IGN)
-			timer_fn(SIGALRM);
-		return 0;
-
-	case SIGINT:
-		if (sigint_fn == SIG_DFL)
-			exit(128 + SIGINT);
-		else if (sigint_fn != SIG_IGN)
-			sigint_fn(SIGINT);
-		return 0;
-
-#if defined(_MSC_VER)
-	case SIGILL:
-	case SIGFPE:
-	case SIGSEGV:
-	case SIGTERM:
-	case SIGBREAK:
-	case SIGABRT:
-	case SIGABRT_COMPAT:
-		/*
-		 * The <signal.h> header in the MS C Runtime defines 8 signals
-		 * as being supported on the platform. Anything else causes an
-		 * "Invalid signal or error" (which in DEBUG builds causes the
-		 * Abort/Retry/Ignore dialog). We by-pass the CRT for things we
-		 * already know will fail.
-		 */
-		return raise(sig);
-	default:
-		errno = EINVAL;
-		return -1;
-
-#else
-
-	default:
-		return raise(sig);
-
-#endif
-
-	}
-}
-
-int link(const char *oldpath, const char *newpath)
-{
-	wchar_t woldpath[MAX_PATH], wnewpath[MAX_PATH];
-	if (xutftowcs_path(woldpath, oldpath) < 0 ||
-		xutftowcs_path(wnewpath, newpath) < 0)
-		return -1;
-
-	if (!CreateHardLinkW(wnewpath, woldpath, NULL)) {
-		errno = err_win_to_posix(GetLastError());
-		return -1;
-	}
-	return 0;
-}
-
-pid_t waitpid(pid_t pid, int *status, int options)
-{
-	HANDLE h = OpenProcess(SYNCHRONIZE | PROCESS_QUERY_INFORMATION,
-	    FALSE, pid);
-	if (!h) {
-		errno = ECHILD;
-		return -1;
-	}
-
-	if (pid > 0 && options & WNOHANG) {
-		if (WAIT_OBJECT_0 != WaitForSingleObject(h, 0)) {
-			CloseHandle(h);
-			return 0;
-		}
-		options &= ~WNOHANG;
-	}
-
-	if (options == 0) {
-		struct pinfo_t **ppinfo;
-		if (WaitForSingleObject(h, INFINITE) != WAIT_OBJECT_0) {
-			CloseHandle(h);
-			return 0;
-		}
-
-		if (status)
-			GetExitCodeProcess(h, (LPDWORD)status);
-
-		EnterCriticalSection(&pinfo_cs);
-
-		ppinfo = &pinfo;
-		while (*ppinfo) {
-			struct pinfo_t *info = *ppinfo;
-			if (info->pid == pid) {
-				CloseHandle(info->proc);
-				*ppinfo = info->next;
-				free(info);
-				break;
-			}
-			ppinfo = &info->next;
-		}
-
-		LeaveCriticalSection(&pinfo_cs);
-
-		CloseHandle(h);
-		return pid;
-	}
-	CloseHandle(h);
-
-	errno = EINVAL;
-	return -1;
-}
-
-int xutftowcsn(wchar_t *wcs, const char *utfs, size_t wcslen, int utflen)
-{
-	int upos = 0, wpos = 0;
-	const unsigned char *utf = (const unsigned char*) utfs;
-	if (!utf || !wcs || wcslen < 1) {
-		errno = EINVAL;
-		return -1;
-	}
-	/* reserve space for \0 */
-	wcslen--;
-	if (utflen < 0)
-		utflen = INT_MAX;
-
-	while (upos < utflen) {
-		int c = utf[upos++] & 0xff;
-		if (utflen == INT_MAX && c == 0)
-			break;
-
-		if (wpos >= wcslen) {
-			wcs[wpos] = 0;
-			errno = ERANGE;
-			return -1;
-		}
-
-		if (c < 0x80) {
-			/* ASCII */
-			wcs[wpos++] = c;
-		} else if (c >= 0xc2 && c < 0xe0 && upos < utflen &&
-				(utf[upos] & 0xc0) == 0x80) {
-			/* 2-byte utf-8 */
-			c = ((c & 0x1f) << 6);
-			c |= (utf[upos++] & 0x3f);
-			wcs[wpos++] = c;
-		} else if (c >= 0xe0 && c < 0xf0 && upos + 1 < utflen &&
-				!(c == 0xe0 && utf[upos] < 0xa0) && /* over-long encoding */
-				(utf[upos] & 0xc0) == 0x80 &&
-				(utf[upos + 1] & 0xc0) == 0x80) {
-			/* 3-byte utf-8 */
-			c = ((c & 0x0f) << 12);
-			c |= ((utf[upos++] & 0x3f) << 6);
-			c |= (utf[upos++] & 0x3f);
-			wcs[wpos++] = c;
-		} else if (c >= 0xf0 && c < 0xf5 && upos + 2 < utflen &&
-				wpos + 1 < wcslen &&
-				!(c == 0xf0 && utf[upos] < 0x90) && /* over-long encoding */
-				!(c == 0xf4 && utf[upos] >= 0x90) && /* > \u10ffff */
-				(utf[upos] & 0xc0) == 0x80 &&
-				(utf[upos + 1] & 0xc0) == 0x80 &&
-				(utf[upos + 2] & 0xc0) == 0x80) {
-			/* 4-byte utf-8: convert to \ud8xx \udcxx surrogate pair */
-			c = ((c & 0x07) << 18);
-			c |= ((utf[upos++] & 0x3f) << 12);
-			c |= ((utf[upos++] & 0x3f) << 6);
-			c |= (utf[upos++] & 0x3f);
-			c -= 0x10000;
-			wcs[wpos++] = 0xd800 | (c >> 10);
-			wcs[wpos++] = 0xdc00 | (c & 0x3ff);
-		} else if (c >= 0xa0) {
-			/* invalid utf-8 byte, printable unicode char: convert 1:1 */
-			wcs[wpos++] = c;
-		} else {
-			/* invalid utf-8 byte, non-printable unicode: convert to hex */
-			static const char *hex = "0123456789abcdef";
-			wcs[wpos++] = hex[c >> 4];
-			if (wpos < wcslen)
-				wcs[wpos++] = hex[c & 0x0f];
-		}
-	}
-	wcs[wpos] = 0;
-	return wpos;
-}
-
-int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
-{
-	if (!wcs || !utf || utflen < 1) {
-		errno = EINVAL;
-		return -1;
-	}
-	utflen = WideCharToMultiByte(CP_UTF8, 0, wcs, -1, utf, utflen, NULL, NULL);
-	if (utflen)
-		return utflen - 1;
-	errno = ERANGE;
-	return -1;
-}
-
-static void setup_windows_environment(void)
-{
-	char *tmp = getenv("TMPDIR");
-
-	/* on Windows it is TMP and TEMP */
-	if (!tmp) {
-		if (!(tmp = getenv("TMP")))
-			tmp = getenv("TEMP");
-		if (tmp) {
-			setenv("TMPDIR", tmp, 1);
-			tmp = getenv("TMPDIR");
-		}
-	}
-
-	if (tmp) {
-		/*
-		 * Convert all dir separators to forward slashes,
-		 * to help shell commands called from the Git
-		 * executable (by not mistaking the dir separators
-		 * for escape characters).
-		 */
-		convert_slashes(tmp);
-	}
-
-	/* simulate TERM to enable auto-color (see color.c) */
-	if (!getenv("TERM"))
-		setenv("TERM", "cygwin", 1);
-
-	/* calculate HOME if not set */
-	if (!getenv("HOME")) {
-		/*
-		 * try $HOMEDRIVE$HOMEPATH - the home share may be a network
-		 * location, thus also check if the path exists (i.e. is not
-		 * disconnected)
-		 */
-		if ((tmp = getenv("HOMEDRIVE"))) {
-			struct strbuf buf = STRBUF_INIT;
-			strbuf_addstr(&buf, tmp);
-			if ((tmp = getenv("HOMEPATH"))) {
-				strbuf_addstr(&buf, tmp);
-				if (is_directory(buf.buf))
-					setenv("HOME", buf.buf, 1);
-				else
-					tmp = NULL; /* use $USERPROFILE */
-			}
-			strbuf_release(&buf);
-		}
-		/* use $USERPROFILE if the home share is not available */
-		if (!tmp && (tmp = getenv("USERPROFILE")))
-			setenv("HOME", tmp, 1);
-	}
-}
-
-int is_valid_win32_path(const char *path, int allow_literal_nul)
-{
-	const char *p = path;
-	int preceding_space_or_period = 0, i = 0, periods = 0;
-
-	if (!protect_ntfs)
-		return 1;
-
-	skip_dos_drive_prefix((char **)&path);
-	goto segment_start;
-
-	for (;;) {
-		char c = *(path++);
-		switch (c) {
-		case '\0':
-		case '/': case '\\':
-			/* cannot end in ` ` or `.`, except for `.` and `..` */
-			if (preceding_space_or_period &&
-			    (i != periods || periods > 2))
-				return 0;
-			if (!c)
-				return 1;
-
-			i = periods = preceding_space_or_period = 0;
-
-segment_start:
-			switch (*path) {
-			case 'a': case 'A': /* AUX */
-				if (((c = path[++i]) != 'u' && c != 'U') ||
-				    ((c = path[++i]) != 'x' && c != 'X')) {
-not_a_reserved_name:
-					path += i;
-					continue;
-				}
-				break;
-			case 'c': case 'C':
-				/* COM1 ... COM9, CON, CONIN$, CONOUT$ */
-				if ((c = path[++i]) != 'o' && c != 'O')
-					goto not_a_reserved_name;
-				c = path[++i];
-				if (c == 'm' || c == 'M') { /* COM1 ... COM9 */
-					c = path[++i];
-					if (c < '1' || c > '9')
-						goto not_a_reserved_name;
-				} else if (c == 'n' || c == 'N') { /* CON */
-					c = path[i + 1];
-					if ((c == 'i' || c == 'I') &&
-					    ((c = path[i + 2]) == 'n' ||
-					     c == 'N') &&
-					    path[i + 3] == '$')
-						i += 3; /* CONIN$ */
-					else if ((c == 'o' || c == 'O') &&
-						 ((c = path[i + 2]) == 'u' ||
-						  c == 'U') &&
-						 ((c = path[i + 3]) == 't' ||
-						  c == 'T') &&
-						 path[i + 4] == '$')
-						i += 4; /* CONOUT$ */
-				} else
-					goto not_a_reserved_name;
-				break;
-			case 'l': case 'L': /* LPT<N> */
-				if (((c = path[++i]) != 'p' && c != 'P') ||
-				    ((c = path[++i]) != 't' && c != 'T') ||
-				    !isdigit(path[++i]))
-					goto not_a_reserved_name;
-				break;
-			case 'n': case 'N': /* NUL */
-				if (((c = path[++i]) != 'u' && c != 'U') ||
-				    ((c = path[++i]) != 'l' && c != 'L') ||
-				    (allow_literal_nul &&
-				     !path[i + 1] && p == path))
-					goto not_a_reserved_name;
-				break;
-			case 'p': case 'P': /* PRN */
-				if (((c = path[++i]) != 'r' && c != 'R') ||
-				    ((c = path[++i]) != 'n' && c != 'N'))
-					goto not_a_reserved_name;
-				break;
-			default:
-				continue;
-			}
-
-			/*
-			 * So far, this looks like a reserved name. Let's see
-			 * whether it actually is one: trailing spaces, a file
-			 * extension, or an NTFS Alternate Data Stream do not
-			 * matter, the name is still reserved if any of those
-			 * follow immediately after the actual name.
-			 */
-			i++;
-			if (path[i] == ' ') {
-				preceding_space_or_period = 1;
-				while (path[++i] == ' ')
-					; /* skip all spaces */
-			}
-
-			c = path[i];
-			if (c && c != '.' && c != ':' && c != '/' && c != '\\')
-				goto not_a_reserved_name;
-
-			/* contains reserved name */
-			return 0;
-		case '.':
-			periods++;
-			/* fallthru */
-		case ' ':
-			preceding_space_or_period = 1;
-			i++;
-			continue;
-		case ':': /* DOS drive prefix was already skipped */
-		case '<': case '>': case '"': case '|': case '?': case '*':
-			/* illegal character */
-			return 0;
-		default:
-			if (c > '\0' && c < '\x20')
-				/* illegal character */
-				return 0;
-		}
-		preceding_space_or_period = 0;
-		i++;
-	}
-}
-
-#if !defined(_MSC_VER)
-/*
- * Disable MSVCRT command line wildcard expansion (__getmainargs called from
- * mingw startup code, see init.c in mingw runtime).
- */
-int _CRT_glob = 0;
-#endif
-
-static NORETURN void die_startup(void)
-{
-	fputs("fatal: not enough memory for initialization", stderr);
-	exit(128);
-}
-
-static void *malloc_startup(size_t size)
-{
-	void *result = malloc(size);
-	if (!result)
-		die_startup();
-	return result;
-}
-
-static char *wcstoutfdup_startup(char *buffer, const wchar_t *wcs, size_t len)
-{
-	len = xwcstoutf(buffer, wcs, len) + 1;
-	return memcpy(malloc_startup(len), buffer, len);
-}
-
-static void maybe_redirect_std_handle(const wchar_t *key, DWORD std_id, int fd,
-				      DWORD desired_access, DWORD flags)
-{
-	DWORD create_flag = fd ? OPEN_ALWAYS : OPEN_EXISTING;
-	wchar_t buf[MAX_PATH];
-	DWORD max = ARRAY_SIZE(buf);
-	HANDLE handle;
-	DWORD ret = GetEnvironmentVariableW(key, buf, max);
-
-	if (!ret || ret >= max)
-		return;
-
-	/* make sure this does not leak into child processes */
-	SetEnvironmentVariableW(key, NULL);
-	if (!wcscmp(buf, L"off")) {
-		close(fd);
-		handle = GetStdHandle(std_id);
-		if (handle != INVALID_HANDLE_VALUE)
-			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) {
-		int new_fd = _open_osfhandle((intptr_t)handle, O_BINARY);
-		SetStdHandle(std_id, handle);
-		dup2(new_fd, fd);
-		close(new_fd);
-	}
-}
-
-static void maybe_redirect_std_handles(void)
-{
-	maybe_redirect_std_handle(L"GIT_REDIRECT_STDIN", STD_INPUT_HANDLE, 0,
-				  GENERIC_READ, FILE_ATTRIBUTE_NORMAL);
-	maybe_redirect_std_handle(L"GIT_REDIRECT_STDOUT", STD_OUTPUT_HANDLE, 1,
-				  GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL);
-	maybe_redirect_std_handle(L"GIT_REDIRECT_STDERR", STD_ERROR_HANDLE, 2,
-				  GENERIC_WRITE, FILE_FLAG_NO_BUFFERING);
-}
-
-#ifdef _MSC_VER
-#ifdef _DEBUG
-#include <crtdbg.h>
-#endif
-#endif
-
-/*
- * We implement wmain() and compile with -municode, which would
- * normally ignore main(), but we call the latter from the former
- * so that we can handle non-ASCII command-line parameters
- * appropriately.
- *
- * To be more compatible with the core git code, we convert
- * argv into UTF8 and pass them directly to main().
- */
-int wmain(int argc, const wchar_t **wargv)
-{
-	int i, maxlen, exit_status;
-	char *buffer, **save;
-	const char **argv;
-
-	trace2_initialize_clock();
-
-#ifdef _MSC_VER
-#ifdef _DEBUG
-	_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
-#endif
-
-#ifdef USE_MSVC_CRTDBG
-	_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
-#endif
-#endif
-
-	maybe_redirect_std_handles();
-
-	/* determine size of argv and environ conversion buffer */
-	maxlen = wcslen(wargv[0]);
-	for (i = 1; i < argc; i++)
-		maxlen = max(maxlen, wcslen(wargv[i]));
-
-	/* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
-	maxlen = 3 * maxlen + 1;
-	buffer = malloc_startup(maxlen);
-
-	/*
-	 * Create a UTF-8 version of w_argv. Also create a "save" copy
-	 * to remember all the string pointers because parse_options()
-	 * will remove claimed items from the argv that we pass down.
-	 */
-	ALLOC_ARRAY(argv, argc + 1);
-	ALLOC_ARRAY(save, argc + 1);
-	for (i = 0; i < argc; i++)
-		argv[i] = save[i] = wcstoutfdup_startup(buffer, wargv[i], maxlen);
-	argv[i] = save[i] = NULL;
-	free(buffer);
-
-	/* fix Windows specific environment settings */
-	setup_windows_environment();
-
-	unset_environment_variables = xstrdup("PERL5LIB");
-
-	/* initialize critical section for waitpid pinfo_t list */
-	InitializeCriticalSection(&pinfo_cs);
-
-	/* set up default file mode and file modes for stdin/out/err */
-	_fmode = _O_BINARY;
-	_setmode(_fileno(stdin), _O_BINARY);
-	_setmode(_fileno(stdout), _O_BINARY);
-	_setmode(_fileno(stderr), _O_BINARY);
-
-	/* initialize Unicode console */
-	winansi_init();
-
-	/* invoke the real main() using our utf8 version of argv. */
-	exit_status = main(argc, argv);
-
-	for (i = 0; i < argc; i++)
-		free(save[i]);
-	free(save);
-	free(argv);
-
-	return exit_status;
-}
-
-int uname(struct utsname *buf)
-{
-	unsigned v = (unsigned)GetVersion();
-	memset(buf, 0, sizeof(*buf));
-	xsnprintf(buf->sysname, sizeof(buf->sysname), "Windows");
-	xsnprintf(buf->release, sizeof(buf->release),
-		 "%u.%u", v & 0xff, (v >> 8) & 0xff);
-	/* assuming NT variants only.. */
-	xsnprintf(buf->version, sizeof(buf->version),
-		  "%u", (v >> 16) & 0x7fff);
-	return 0;
-}