updated for version 7.4.466
Problem:    CTRL-W } does not open preview window. (Erik Falor)
Solution:   Don't set g_do_tagpreview for CTRL-W }.
diff --git a/src/window.c b/src/window.c
index 5a2d8a4..fda9199 100644
--- a/src/window.c
+++ b/src/window.c
@@ -485,7 +485,8 @@
 		else
 		    postponed_split = -1;
 #ifdef FEAT_QUICKFIX
-		g_do_tagpreview = 0;
+		if (nchar != '}')
+		    g_do_tagpreview = 0;
 #endif
 
 		/* Execute the command right here, required when "wincmd ]"