Remove 'env' which cannot be treated as variables

Environment variables ($) should have specific ways to handle, like & or @

Author: lambdalisue

vim/variable.ts

@@ -8,17 +8,16 @@ import { Denops } from "../deps.ts";
  * w - Window local variables
  * t - Tab page local variables
  * v - Vim's variables
- * env - Environment variables
  *
  */
-export type VariableGroups = "g" | "b" | "w" | "t" | "v" | "env";
+export type VariableGroups = "g" | "b" | "w" | "t" | "v";
 
 export async function getVar<T = unknown>(
   denops: Denops,
   group: VariableGroups,
   prop: string,
 ): Promise<T> {
-  const name = group === "env" ? `\$${prop}` : `${group}:${prop}`;
+  const name = `${group}:${prop}`;
   // deno-lint-ignore no-explicit-any
   return (await denops.eval(name)) as any;
 }
@@ -29,7 +28,7 @@ export async function setVar<T = unknown>(
   prop: string,
   value: T,
 ): Promise<void> {
-  const name = group === "env" ? `\$${prop}` : `${group}:${prop}`;
+  const name = `${group}:${prop}`;
   await denops.cmd(`let ${name} = value`, {
     value,
   });
@@ -40,7 +39,7 @@ export async function removeVar(
   group: VariableGroups,
   prop: string,
 ): Promise<void> {
-  const name = group === "env" ? `\$${prop}` : `${group}:${prop}`;
+  const name = `${group}:${prop}`;
   await denops.cmd(`unlet ${name}`);
 }
 

vim/vim.ts

@@ -11,7 +11,6 @@ export class Vim {
   readonly w: VariableHelper;
   readonly t: VariableHelper;
   readonly v: VariableHelper;
-  readonly env: VariableHelper;
 
   constructor(denops: Denops) {
     this.#denops = denops;
@@ -20,7 +19,6 @@ export class Vim {
     this.w = new VariableHelper(denops, "w");
     this.t = new VariableHelper(denops, "t");
     this.v = new VariableHelper(denops, "v");
-    this.env = new VariableHelper(denops, "env");
   }
 
   static get(): Vim {