diff --git a/src/vim.h b/src/vim.h
index b7af316..9a97033 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1118,11 +1118,12 @@
 #define INSCHAR_COM_LIST 16	// format comments with list/2nd line indent
 
 // flags for open_line()
-#define OPENLINE_DELSPACES  1	// delete spaces after cursor
-#define OPENLINE_DO_COM	    2	// format comments
-#define OPENLINE_KEEPTRAIL  4	// keep trailing spaces
-#define OPENLINE_MARKFIX    8	// fix mark positions
-#define OPENLINE_COM_LIST  16	// format comments with list/2nd line indent
+#define OPENLINE_DELSPACES  0x01    // delete spaces after cursor
+#define OPENLINE_DO_COM	    0x02    // format comments
+#define OPENLINE_KEEPTRAIL  0x04    // keep trailing spaces
+#define OPENLINE_MARKFIX    0x08    // fix mark positions
+#define OPENLINE_COM_LIST   0x10    // format comments with list/2nd line indent
+#define OPENLINE_FORMAT	    0x20    // formatting long comment
 
 // There are five history tables:
 #define HIST_CMD	0	// colon commands