*: Fix linter errors

src/nvim/viml/parser/expressions.c

@@ -2014,17 +2014,20 @@ viml_pexpr_parse_process_token:
           lambda_node->data.fig.type_guesses.allow_lambda = false;
           if (lambda_node->children != NULL
               && lambda_node->children->type == kExprNodeComma) {
-            // If lambda has comma child this means that parser has already seen at
-            // least "{arg1,", so node cannot possibly be anything, but lambda.
+            // If lambda has comma child this means that parser has already seen
+            // at least "{arg1,", so node cannot possibly be anything, but
+            // lambda.
 
-            // Vim may give E121 or E720 in this case, but it does not look right to
-            // have either because both are results of reevaluation possibly-lambda
-            // node as a dictionary and here this is not going to happen.
+            // Vim may give E121 or E720 in this case, but it does not look
+            // right to have either because both are results of reevaluation
+            // possibly-lambda node as a dictionary and here this is not going
+            // to happen.
             ERROR_FROM_TOKEN_AND_MSG(
-                cur_token, _("E15: Expected lambda arguments list or arrow: %.*s"));
+                cur_token,
+                _("E15: Expected lambda arguments list or arrow: %.*s"));
           } else {
-            // Else it may appear that possibly-lambda node is actually a dictionary
-            // or curly-braces-name identifier.
+            // Else it may appear that possibly-lambda node is actually
+            // a dictionary or curly-braces-name identifier.
             lambda_node = NULL;
             kv_drop(pt_stack, 1);
           }

test/functional/api/vim_spec.lua

@@ -12,7 +12,6 @@ local request = helpers.request
 local meth_pcall = helpers.meth_pcall
 local command = helpers.command
 
-local REMOVE_THIS = global_helpers.REMOVE_THIS
 local intchar2lua = global_helpers.intchar2lua
 local format_string = global_helpers.format_string
 local mergedicts_copy = global_helpers.mergedicts_copy

test/helpers.lua

@@ -522,7 +522,7 @@ local function fixtbl(tbl)
 end
 
 local function fixtbl_rec(tbl)
-  for k, v in pairs(tbl) do
+  for _, v in pairs(tbl) do
     if type(v) == 'table' then
       fixtbl_rec(v)
     end

test/unit/viml/expressions/parser_spec.lua

@@ -7,7 +7,6 @@ local make_enum_conv_tab = helpers.make_enum_conv_tab
 local child_call_once = helpers.child_call_once
 local alloc_log_new = helpers.alloc_log_new
 local kvi_destroy = helpers.kvi_destroy
-local array_size = helpers.array_size
 local conv_enum = helpers.conv_enum
 local debug_log = helpers.debug_log
 local ptr2key = helpers.ptr2key
@@ -26,7 +25,6 @@ local mergedicts_copy = global_helpers.mergedicts_copy
 local format_string = global_helpers.format_string
 local format_luav = global_helpers.format_luav
 local intchar2lua = global_helpers.intchar2lua
-local REMOVE_THIS = global_helpers.REMOVE_THIS
 local dictdiff = global_helpers.dictdiff
 
 local lib = cimport('./src/nvim/viml/parser/expressions.h',
@@ -147,12 +145,14 @@ child_call_once(function()
         --       nvim_hl_defs.
         eq(true, not not (nvim_hl_defs[grp_link]
                           or predefined_hl_defs[grp_link]))
+        eq(false, not not (nvim_hl_defs[new_grp]
+                           or predefined_hl_defs[new_grp]))
         nvim_hl_defs[new_grp] = {'link', grp_link}
       else
         local new_grp, grp_args = s:match('^(%w+) (.*)')
         neq(nil, new_grp)
-        eq(false, not not (nvim_hl_defs[grp_link]
-                           or predefined_hl_defs[grp_link]))
+        eq(false, not not (nvim_hl_defs[new_grp]
+                           or predefined_hl_defs[new_grp]))
         nvim_hl_defs[new_grp] = {'definition', grp_args}
       end
     end)
@@ -206,7 +206,7 @@ local function format_check(expr, format_check_data, opts)
   -- That forces specific order.
   local zflags = opts.flags[1]
   local zdata = format_check_data[zflags]
-  local dig_len = 0
+  local dig_len
   if opts.funcname then
     print(format_string('\n%s(%r, {', opts.funcname, expr))
     dig_len = #opts.funcname + 2