updated for version 7.3.970
Problem:    Syntax highlighting can be slow.
Solution:   Include the NFA regexp engine.  Add the 'regexpengine' option to
            select which one is used. (various authors, including Ken Takata,
            Andrei Aiordachioaie, Russ Cox, Xiaozhou Liua, Ian Young)
diff --git a/src/Make_ming.mak b/src/Make_ming.mak
index b8d7b20..3670e71 100644
--- a/src/Make_ming.mak
+++ b/src/Make_ming.mak
@@ -765,6 +765,9 @@
 $(OUTDIR)/netbeans.o:	netbeans.c $(INCL) $(NBDEBUG_INCL) $(NBDEBUG_SRC)
 	$(CC) -c $(CFLAGS) netbeans.c -o $(OUTDIR)/netbeans.o
 
+$(OUTDIR)/regexp.o:		regexp.c regexp_nfa.c $(INCL)
+	$(CC) -c $(CFLAGS) regexp.c -o $(OUTDIR)/regexp.o
+
 $(OUTDIR)/if_mzsch.o:	if_mzsch.c $(INCL) if_mzsch.h $(MZ_EXTRA_DEP)
 	$(CC) -c $(CFLAGS) if_mzsch.c -o $(OUTDIR)/if_mzsch.o