Escape pkgx +pkg; Fixes #902

Author: mxcl

src/modes/env.test.ts

@@ -10,14 +10,14 @@ Deno.test("env.ts", async () => {
 
   const stub1 = mock.stub(_internals, "install", () => Promise.resolve({installations: [], pkgenv: []}))
   const stub2 = mock.stub(_internals, "construct_env", () => Promise.resolve({
-    PATH: "/a", FOO: "bar"
+    PATH: "/a", FOO: "bar baz"
   }))
 
   try {
     const rv = await specimen({ pkgs: [pkg], update: false, logger })
     assertEquals(rv, undent`
       PATH=/a
-      FOO=bar
+      FOO="bar baz"
       `)
   } finally {
     stub1.restore()

src/modes/env.ts

@@ -1,3 +1,4 @@
+import escape_if_necessary from "../utils/sh-escape.ts"
 import construct_env from "../prefab/construct-env.ts"
 import install, { Logger } from "../prefab/install.ts"
 import { PackageRequirement } from "pkgx"
@@ -11,7 +12,7 @@ export default async function({ pkgs, ...opts }: {
   const installations = await install(pkgs, opts)
   const env = await construct_env(installations)
   return Object.entries(env).map(([key, value]) =>
-    `${key}=${value}`
+    `${key}=${escape_if_necessary(value)}`
   ).join("\n")
 }