commit 37294bd6a2afbf0fc8a1c34cbe102336b0bd0a82
author Bram Moolenaar <Bram@vim.org> Wed Mar 10 13:40:08 2021 +0100
committer Bram Moolenaar <Bram@vim.org> Wed Mar 10 13:40:08 2021 +0100
tree c0a34b9f1c02015af208be03a2d27920ac1a64f0
parent e3ffcd9902efc756178900d9bd972c74a09c3fcd

patch 8.2.2581: Vim9: sourcing Vim9 script triggers a redraw

Problem:    Vim9: sourcing Vim9 script triggers a redraw.
Solution:   Do not let setting/restoring 'cpoptions' cause a redraw.
            (closes #7920)

src/option.c

diff --git a/src/option.c b/src/option.c
index 9db9c26..b9d7edb 100644
--- a/src/option.c
+++ b/src/option.c
@@ -3176,7 +3176,9 @@
     if (curwin->w_curswant != MAXCOL
 		     && (options[opt_idx].flags & (P_CURSWANT | P_RALL)) != 0)
 	curwin->w_set_curswant = TRUE;
-    check_redraw(options[opt_idx].flags);
+
+    if ((opt_flags & OPT_NO_REDRAW) == 0)
+	check_redraw(options[opt_idx].flags);
 
     return NULL;
 }
@@ -3192,8 +3194,8 @@
     long	value,			// new value
     char	*errbuf,		// buffer for error messages
     size_t	errbuflen,		// length of "errbuf"
-    int		opt_flags)		// OPT_LOCAL, OPT_GLOBAL and
-					// OPT_MODELINE
+    int		opt_flags)		// OPT_LOCAL, OPT_GLOBAL,
+					// OPT_MODELINE, etc.
 {
     char	*errmsg = NULL;
     long	old_value = *(long *)varp;
@@ -3734,7 +3736,8 @@
     if (curwin->w_curswant != MAXCOL
 		     && (options[opt_idx].flags & (P_CURSWANT | P_RALL)) != 0)
 	curwin->w_set_curswant = TRUE;
-    check_redraw(options[opt_idx].flags);
+    if ((opt_flags & OPT_NO_REDRAW) == 0)
+	check_redraw(options[opt_idx].flags);
 
     return errmsg;
 }