Revert ":boom: Remove "variables" entry from dict getbufnr() returns"

This reverts commit f2995f7.

Author: mityu

function/buffer.ts

@@ -414,9 +414,6 @@ export async function deletebufline(
  *                             name  sign name
  *         variables       A reference to the dictionary with
  *                         buffer-local variables.
- *                         CAUTION: Different from the builtin getbufnr()
- *                         function, denops-std's getbufnr() function doesn't
- *                         return this entry.
  *         windows         List of `window-ID`s that display this
  *                         buffer
  *         popups          List of popup `window-ID`s that
@@ -440,10 +437,6 @@ export async function deletebufline(
  * Can also be used as a `method`:
  *
  *     GetBufnr()->getbufinfo()
- *
- * CAUTION: Different from the builtin getbufnr() function, denops-std's
- * getbufnr() function omits the "variables" entry from the returned
- * dictionary.
  */
 export function getbufinfo(
   denops: Denops,
@@ -457,12 +450,7 @@ export async function getbufinfo(
   denops: Denops,
   ...args: unknown[]
 ): Promise<BufInfo[]> {
-  const bufinfos = await denops.eval(
-    "map(call('getbufinfo', l:args), {_, v -> filter(v, {k -> k !=# 'variables'})})",
-    {
-      args: args,
-    },
-  ) as Record<
+  const bufinfos = await denops.call("getbufinfo", ...args) as Record<
     keyof BufInfo,
     unknown
   >[];

function/buffer_test.ts

@@ -1,4 +1,4 @@
-import { assertEquals, assertFalse } from "@std/assert";
+import { assertEquals } from "@std/assert";
 import { assert, is } from "@core/unknownutil";
 import { test } from "@denops/test";
 import type { BufInfo } from "./types.ts";
@@ -61,17 +61,5 @@ test({
       },
     });
     await denops.cmd("1,$bwipeout!");
-
-    await t.step({
-      name: "getbufinfo() will filter buffer-local variables",
-      fn: async () => {
-        await denops.cmd("enew!");
-        await denops.cmd("let b:var = 0");
-
-        const actual = await buffer.getbufinfo(denops);
-        assertEquals(actual.length, 1);
-        assertFalse("variables" in actual[0]);
-      },
-    });
   },
 });