patch 8.2.3177: Vim9: can not use "for _ in expr" at script level
Problem: Vim9: can not use "for _ in expr" at script level.
Solution: Skip assignment if the loop variable is "_".
diff --git a/src/eval.c b/src/eval.c
index 2e8ab3d..058b2d3 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1784,6 +1784,8 @@
| ASSIGN_NO_MEMBER_TYPE)
: 0);
listitem_T *item;
+ int skip_assign = in_vim9script() && arg[0] == '_'
+ && !eval_isnamec(arg[1]);
if (fi->fi_blob != NULL)
{
@@ -1795,6 +1797,8 @@
tv.v_lock = VAR_FIXED;
tv.vval.v_number = blob_get(fi->fi_blob, fi->fi_bi);
++fi->fi_bi;
+ if (skip_assign)
+ return TRUE;
return ex_let_vars(arg, &tv, TRUE, fi->fi_semicolon,
fi->fi_varcount, flag, NULL) == OK;
}
@@ -1812,7 +1816,10 @@
tv.vval.v_string = vim_strnsave(fi->fi_string + fi->fi_byte_idx, len);
fi->fi_byte_idx += len;
++fi->fi_bi;
- result = ex_let_vars(arg, &tv, TRUE, fi->fi_semicolon,
+ if (skip_assign)
+ result = TRUE;
+ else
+ result = ex_let_vars(arg, &tv, TRUE, fi->fi_semicolon,
fi->fi_varcount, flag, NULL) == OK;
vim_free(tv.vval.v_string);
return result;
@@ -1825,7 +1832,10 @@
{
fi->fi_lw.lw_item = item->li_next;
++fi->fi_bi;
- result = (ex_let_vars(arg, &item->li_tv, TRUE, fi->fi_semicolon,
+ if (skip_assign)
+ result = TRUE;
+ else
+ result = (ex_let_vars(arg, &item->li_tv, TRUE, fi->fi_semicolon,
fi->fi_varcount, flag, NULL) == OK);
}
return result;