* (native). */
{
    Tcl_Encoding encoding;
#ifdef __CYGWIN__
    int length;
    char buf[PATH_MAX * TCL_UTF_MAX + 1];
    char name[PATH_MAX * TCL_UTF_MAX + 1];

    /* Make some symbols available without including <windows.h> */
#   define CP_UTF8 65001
    DLLIMPORT extern int cygwin_conv_to_full_posix_path(const char *, char *);
    DLLIMPORT extern __stdcall int GetModuleFileNameW(void *, const char *, int);
    DLLIMPORT extern __stdcall int WideCharToMultiByte(int, int, const char *, int,
		const char *, int, const char *, const char *);

    GetModuleFileNameW(NULL, name, PATH_MAX);
    WideCharToMultiByte(CP_UTF8, 0, name, -1, buf, PATH_MAX, NULL, NULL);
    cygwin_conv_to_full_posix_path(buf, name);
    length = strlen(name);
    if ((length > 4) && !strcasecmp(name + length - 4, ".exe")) {
	/* Strip '.exe' part. */
	length -= 4;