Minimize Cygwin64 changes & use __unix__ instead of CYGWIN.

display.c

@@ -56,8 +56,6 @@ static int displaying = TRUE;
 #include <sys/ioctl.h>
 /* for window size changes */
 int chg_width, chg_height;
-
-static int newscreensize(int h, int w);
 #endif
 
 static int reframe(struct window *wp);
@@ -73,6 +71,7 @@ static void modeline(struct window *wp);
 static void mlputi(int i, int r);
 static void mlputli(long l, int r);
 static void mlputf(int s);
+static int newscreensize(int h, int w);
 
 #if RAINBOW
 static void putline(int row, int col, char *buf);

estruct.h

@@ -54,7 +54,7 @@
 #undef BSD
 #endif
 
-#if defined(SYSV) || defined(u3b2) || defined(_AIX) || (defined(i386) && defined(unix)) || defined(__hpux) || defined( CYGWIN)
+#if defined(SYSV) || defined(u3b2) || defined(_AIX) || (defined(i386) && defined(unix)) || defined(__hpux) || defined( __unix__)
 #define	USG 1 /* System V UNIX */
 #else
 #define	USG 0

flook.c

@@ -75,15 +75,15 @@ boolean fexist( const char *fname)
  */
 char *flook( const char *fname, int hflag)
 {
+	char *home;	/* path to home directory */
+	char *path;	/* environmental PATH variable */
+	char *sp;	/* pointer into path spec */
 	int i;		/* index */
 	static char fspec[NSTRING];	/* full path spec to search */
 
 #if	ENVFUNC
-	char *path;	/* environmental PATH variable */
 
 	if (hflag) {
-		char *home;	/* path to home directory */
-
 		home = getenv("HOME");
 		if (home != NULL) {
 			/* build home dir file spec */
@@ -108,7 +108,6 @@ char *flook( const char *fname, int hflag)
 	path = getenv("PATH");
 	if (path != NULL)
 		while (*path) {
-			char *sp;	/* pointer into path spec */
 
 			/* build next possible file spec */
 			sp = fspec;

input.c

@@ -345,9 +345,9 @@ int getcmd(void)
 
 #if VT220
       proc_metac:
+#endif
 	if (c == 128+27)		/* CSI */
 		goto handle_CSI;
-#endif
 	/* process META prefix */
 	if (c == (CONTROL | '[')) {
 		c = get1key();