*: Fix test failures

src/nvim/eval.c

@@ -14545,12 +14545,14 @@ static void f_setline(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 
   // Default result is zero == OK.
   for (;; ) {
+    if (argvars[1].v_type == VAR_LIST) {
       // List argument, get next string.
-    if (li == NULL) {
-      break;
+      if (li == NULL) {
+        break;
+      }
+      line = tv_get_string_chk(TV_LIST_ITEM_TV(li));
+      li = TV_LIST_ITEM_NEXT(l, li);
     }
-    line = tv_get_string_chk(TV_LIST_ITEM_TV(li));
-    li = TV_LIST_ITEM_NEXT(l, li);
 
     rettv->vval.v_number = 1;  // FAIL
     if (line == NULL || lnum < 1 || lnum > curbuf->b_ml.ml_line_count + 1) {

src/nvim/eval/encode.c

@@ -140,7 +140,9 @@ static int conv_error(const char *const msg, const MPConvStack *const mpstack,
                                       ? tv_list_last(v.data.l.list)
                                       : TV_LIST_ITEM_PREV(v.data.l.list,
                                                           v.data.l.li));
-        int idx = (int)tv_list_idx_of_item(v.data.l.list, li);
+        int idx = (li == NULL
+                   ? 0
+                   : (int)tv_list_idx_of_item(v.data.l.list, li));
         if (v.type == kMPConvList
             || li == NULL
             || (TV_LIST_ITEM_TV(li)->v_type != VAR_LIST

src/nvim/ex_getln.c

@@ -2680,6 +2680,7 @@ static bool color_cmdline(CmdlineInfo *colored_ccline)
       .end = end,
       .attr = attr,
     }));
+    i++;
   });
   if (prev_end < colored_ccline->cmdlen) {
     kv_push(ccline_colors->colors, ((CmdlineColorChunk) {