commit e5a2dc87fd9d63dfd0d9c379e363ee8b8c05b14c
author Bram Moolenaar <Bram@vim.org> Sun Jan 03 19:52:05 2021 +0100
committer Bram Moolenaar <Bram@vim.org> Sun Jan 03 19:52:05 2021 +0100
tree 715a114546d458acfe85c5d0fe94fed963842ce9
parent 5afd081cd3d0f3dfbc7f6b157a8caad0ce6394ee

patch 8.2.2289: Vim9: 'cpo' can become empty

Problem:    Vim9: 'cpo' can become empty.
Solution:   Use empty_option instead of an empty string.  Update quickfix
            buffer after restoring 'cpo'.  (closes #7608)

src/evalbuffer.c

diff --git a/src/evalbuffer.c b/src/evalbuffer.c
index 376c1fe..3fed389 100644
--- a/src/evalbuffer.c
+++ b/src/evalbuffer.c
@@ -68,7 +68,7 @@
     save_magic = p_magic;
     p_magic = TRUE;
     save_cpo = p_cpo;
-    p_cpo = (char_u *)"";
+    p_cpo = empty_option;
 
     buf = buflist_findnr(buflist_findpat(name, name + STRLEN(name),
 						    TRUE, FALSE, curtab_only));