修复luamake shell

scripts/action.lua

@@ -28,6 +28,9 @@ end
 
 local function init()
     writer.init()
+end
+
+local function import()
     writer.import(arguments.f)
 end
 
@@ -111,6 +114,7 @@ end
 
 return {
     init = init,
+    import = import,
     generate = generate,
     build = build,
     clean = clean,

scripts/command/build.lua

@@ -1,4 +1,5 @@
 local action = require "action"
 action.init()
+action.import()
 action.generate()
 action.build()

scripts/command/clean.lua

@@ -2,6 +2,7 @@ local action = require "action"
 local globals = require "globals"
 
 action.init()
+action.import()
 
 if globals.compiler == "msvc" then
     local msvc = require "env.msvc"

scripts/command/init.lua

@@ -1,3 +1,4 @@
 local action = require "action"
 action.init()
+action.import()
 action.generate()

scripts/command/rebuild.lua

@@ -1,5 +1,6 @@
 local action = require "action"
 action.init()
+action.import()
 action.generate()
 action.clean()
 action.build()

scripts/main.lua

@@ -4,6 +4,7 @@ local RawCommand = {
     lua = true,
     test = true,
     help = true,
+    shell = true,
 }
 
 local function command(what)