Only support UTF-8 keyboard sequence on Cygwin.

FIX: Missing on  Linux, ue --help prints progname set in Makefile.

Makefile

@@ -33,7 +33,7 @@ CFLAGS=-O2 $(WARNINGS)
 #CFLAGS=-O4 -DSVR4		# Sun
 #CFLAGS=-O -qchars=signed	# RS/6000
 ifeq ($(uname_S),Linux)
- DEFINES=-DAUTOCONF -DPOSIX -DUSG -D_BSD_SOURCE -D_SVID_SOURCE -D_XOPEN_SOURCE=600
+ DEFINES=-DAUTOCONF -DPROGRAM=$(PROGRAM) -DPOSIX -DUSG -D_BSD_SOURCE -D_SVID_SOURCE -D_XOPEN_SOURCE=600
  LIBS=-lcurses
 endif
 ifeq ($(uname_S),FreeBSD)
@@ -43,8 +43,8 @@ ifeq ($(uname_S),Darwin)
  DEFINES=-DAUTOCONF -DPOSIX -DSYSV -D_DARWIN_C_SOURCE -D_BSD_SOURCE -D_SVID_SOURCE -D_XOPEN_SOURCE=600
 endif
 ifeq ($(uname_S),CYGWIN)
- DEFINES=-DAUTOCONF -DPROGRAM=$(PROGRAM)
- LIBS=-lcurses			# SYSV
+ DEFINES=-DAUTOCONF -DCYGWIN -DPROGRAM=$(PROGRAM)
+ LIBS=-lcurses
 endif
 ifeq ($(uname_S),MINGW32)
  DEFINES=-DAUTOCONF -DSYSV -DMINGW32 -DPROGRAM=$(PROGRAM)

input.c

@@ -457,6 +457,7 @@ handle_CSI:
         return CTLX | c;
     }
 
+#ifdef CYGWIN
 	/* Accept UTF-8 sequence */
 	if( c <= 0xC1 || c > 0xF4)
 		return c ;
@@ -474,6 +475,7 @@ handle_CSI:
 
 		utf8_to_unicode( utf, 0, sizeof utf, (unicode_t *) &c) ;
 	}
+#endif
 	
     /* otherwise, just return it */
     return c;