commit 36a5b6867bb6c0bd69c8da7d788000ab8a0b0ab0
author Yegappan Lakshmanan <yegappan@yahoo.com> Sat Mar 19 12:56:51 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Sat Mar 19 12:56:51 2022 +0000
tree fbf0b74c593ab218dc3c66856d13edb2695128b1
parent 95d2e7634ccd8e0da78086002509a856999e180c

patch 8.2.4594: need to write script to a file to be able to source them

Problem:    Need to write script to a file to be able to source them.
Solution:   Make ":source" use lines from the current buffer. (Yegappan
            Lakshmanan et al., closes #9967)

src/alloc.c

diff --git a/src/alloc.c b/src/alloc.c
index 19f8fcd..e6e2633 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -845,7 +845,7 @@
     void
 ga_concat_len(garray_T *gap, char_u *s, size_t len)
 {
-    if (s == NULL || *s == NUL)
+    if (s == NULL || *s == NUL || len == 0)
 	return;
     if (ga_grow(gap, (int)len) == OK)
     {