Patch 8.2.0618
Problem: Echoing a null list results in no output. (Yegappan Lakshmanan)
Solution: Return "[]" instead of NULL in echo_string_core().
Files: src/eval.c, src/testdir/test_messages.vim
*** ../vim-8.2.0617/src/eval.c 2020-04-20 17:46:10.588551933 +0200
--- src/eval.c 2020-04-22 19:12:49.723469925 +0200
***************
*** 4528,4535 ****
case VAR_LIST:
if (tv->vval.v_list == NULL)
{
*tofree = NULL;
! r = NULL;
}
else if (copyID != 0 && tv->vval.v_list->lv_copyID == copyID
&& tv->vval.v_list->lv_len > 0)
--- 4528,4536 ----
case VAR_LIST:
if (tv->vval.v_list == NULL)
{
+ // NULL list is equivalent to empty list.
*tofree = NULL;
! r = (char_u *)"[]";
}
else if (copyID != 0 && tv->vval.v_list->lv_copyID == copyID
&& tv->vval.v_list->lv_len > 0)
*** ../vim-8.2.0617/src/testdir/test_messages.vim 2020-04-13
19:55:47.567369413 +0200
--- src/testdir/test_messages.vim 2020-04-22 19:12:02.571576310 +0200
***************
*** 76,81 ****
--- 76,82 ----
call assert_equal("\n12345", execute(':echomsg 12345'))
call assert_equal("\n[]", execute(':echomsg []'))
call assert_equal("\n[1, 2, 3]", execute(':echomsg [1, 2, 3]'))
+ call assert_equal("\n[1, 2, []]", execute(':echomsg [1, 2,
test_null_list()]'))
call assert_equal("\n{}", execute(':echomsg {}'))
call assert_equal("\n{'a': 1, 'b': 2}", execute(':echomsg {"a": 1, "b":
2}'))
if has('float')
*** ../vim-8.2.0617/src/version.c 2020-04-22 14:30:28.103278289 +0200
--- src/version.c 2020-04-22 19:01:56.532934888 +0200
***************
*** 748,749 ****
--- 748,751 ----
{ /* Add new patch number below this line */
+ /**/
+ 618,
/**/
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