patch 8.2.2670: Vim9: error for append(0, text)
Problem: Vim9: error for append(0, text).
Solution: Check for negative number. (closes #8022)
diff --git a/src/typval.c b/src/typval.c
index 8030c69..ca561dd 100644
--- a/src/typval.c
+++ b/src/typval.c
@@ -1621,7 +1621,7 @@
if (argvars[0].v_type != VAR_STRING || !in_vim9script())
lnum = (linenr_T)tv_get_number_chk(&argvars[0], NULL);
- if (lnum <= 0) // no valid number, try using arg like line()
+ if (lnum < 0) // no valid number, try using arg like line()
{
int fnum;
pos_T *fp = var2fpos(&argvars[0], TRUE, &fnum, FALSE);