patch 8.0.0649: when opening a help file the filetype is set several times
Problem: When opening a help file the filetype is set several times.
Solution: When setting the filetype to the same value from a modeline, don't
trigger FileType autocommands. Don't set the filetype to "help"
when it's already set correctly.
diff --git a/src/version.c b/src/version.c
index b221ce2..47e1da5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 649,
+/**/
648,
/**/
647,