🐛 Fix undefined variable 'message' on Vim

Author: lambdalisue

denops_std/helper/echo.ts

@@ -1,5 +1,6 @@
 import { Denops } from "../deps.ts";
 import { batch } from "../batch/mod.ts";
+import { load } from "./load.ts";
 
 /**
  * Echo message as like `echo` on Vim script.
@@ -16,10 +17,7 @@ export function echo(denops: Denops, message: string): Promise<void> {
   if (denops.meta.mode === "test") {
     return Promise.resolve();
   } else if (denops.meta.host === "vim") {
-    return denops.cmd(
-      "call timer_start(0, { -> execute('redraw | echo message', '') })",
-      { message },
-    );
+    return echoVim(denops, message);
   } else {
     return denops.cmd("redraw | echo message", { message });
   }
@@ -62,3 +60,8 @@ export async function friendlyCall(
     }
   }
 }
+
+async function echoVim(denops: Denops, message: string): Promise<void> {
+  await load(denops, new URL("./echo.vim", import.meta.url));
+  await denops.call("DenopsStdHelperEcho", message);
+}

denops_std/helper/echo.vim

@@ -0,0 +1,12 @@
+if exists('g:loaded_denops_std_helper_echo')
+  finish
+endif
+let g:loaded_denops_std_helper_echo = 1
+
+function! DenopsStdHelperEcho(message) abort
+  call timer_start(0, { -> s:echo(a:message) })
+endfunction
+
+function! s:echo(message) abort
+  redraw | echo a:message
+endfunction