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	extern "C" struct term set_curterm(struct term termp);			extern "C" struct term set_curterm(struct term termp);
	extern "C" int del_curterm(struct term *termp);			extern "C" int del_curterm(struct term *termp);
	extern "C" int tigetnum(char *capname);			extern "C" int tigetnum(char *capname);
	#endif			#endif

	static bool terminalHasColors(int fd) {			static bool terminalHasColors(int fd) {
	#ifdef HAVE_TERMINFO			#ifdef HAVE_TERMINFO
	// First, acquire a global lock because these C routines are thread hostile.			// First, acquire a global lock because these C routines are thread hostile.
	static sys::Mutex M;			static sys::RecursiveMutex M;
	MutexGuard G(M);			MutexGuard G(M);

	int errret = 0;			int errret = 0;
	if (setupterm((char *)nullptr, fd, &errret) != 0)			if (setupterm((char *)nullptr, fd, &errret) != 0)
	// Regardless of why, if we can't get terminfo, we shouldn't try to print			// Regardless of why, if we can't get terminfo, we shouldn't try to print
	// colors.			// colors.
	return false;			return false;

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