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/option.h b/src/option.h
index 8b982f5..b11316f 100644
--- a/src/option.h
+++ b/src/option.h
@@ -653,6 +653,7 @@
EXTERN long p_rdt; /* 'redrawtime' */
#endif
EXTERN int p_remap; /* 'remap' */
+EXTERN long p_re; /* 'regexpengine' */
EXTERN long p_report; /* 'report' */
#if defined(FEAT_WINDOWS) && defined(FEAT_QUICKFIX)
EXTERN long p_pvh; /* 'previewheight' */