commit https://github.com/vim/vim/commit/c6aa475a27e3ed1645446b014c32ebf68d005d49 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 7 15:39:43 2017 +0100 patch 8.0.0148: wrong indent in C preprocessor with line continuation Problem: When a C preprocessor statement has two line continuations the following line does not have the right indent. (Ken Takata) Solution: Add the indent of the previous continuation line. (Hirohito Higashi)

--- a/src/testdir/test3.in
+++ b/src/testdir/test3.in
@@ -2318,6 +2318,25 @@ i;
 JSEND
 
 STARTTEST
+:set cin cino&
+/start of define
+=/end of define
+ENDTEST
+
+/* start of define */
+{
+}
+#define AAA \
+BBB\
+CCC
+
+#define CNT \
+1 + \
+2 + \
+4
+/* end of define */
+
+STARTTEST
 :g/^STARTTEST/.,/^ENDTEST/d
 :1;/start of AUTO/,$wq! test.out
 ENDTEST