Support 'context' on 'execute()'

Author: lambdalisue

execute.ts

@@ -1,20 +1,23 @@
-import { Denops } from "./deps.ts";
+import { Context, Denops } from "./deps.ts";
 
 /**
  * Execute Vim script directly
  */
 export async function execute(
   denops: Denops,
   command: string | string[],
+  context: Context = {},
 ): Promise<void> {
   if (Array.isArray(command)) {
-    await denops.cmd("call execute(l:command, '')", {
-      command: command
+    context = {
+      ...context,
+      __denops_internal_command: command
         .map((x) => x.replace(/^\s+|\s+$/g, ""))
         .filter((x) => !!x),
-    });
+    };
+    await denops.cmd("call execute(l:__denops_internal_command, '')", context);
     return;
   }
   command = command.replace(/\r?\n\s*\\/g, "");
-  await execute(denops, command.split(/\r?\n/g));
+  await execute(denops, command.split(/\r?\n/g), context);
 }

vim.ts

@@ -39,8 +39,11 @@ export class Vim {
     return await this.#denops.eval(expr, context);
   }
 
-  async execute(command: string | string[]): Promise<void> {
-    await execute(this.#denops, command);
+  async execute(
+    command: string | string[],
+    context: Context = {},
+  ): Promise<void> {
+    await execute(this.#denops, command, context);
   }
 
   async autocmd(