feat(cmd): alias performance improvement

src/shell/aliae.go

@@ -93,6 +93,10 @@ func (a Aliae) Render() {
 			DotFile.WriteString("\n\n")
 		}
 
+		if first && context.Current.Shell == CMD {
+			DotFile.WriteString(cmdAliasPre())
+		}
+
 		if !first {
 			DotFile.WriteString("\n")
 		}
@@ -101,4 +105,8 @@ func (a Aliae) Render() {
 
 		first = false
 	}
+
+	if context.Current.Shell == CMD {
+		DotFile.WriteString(cmdAliasPost())
+	}
 }

src/shell/aliae_test.go

@@ -20,10 +20,9 @@ func TestAliasCommand(t *testing.T) {
 			Expected: "Set-Alias -Name foo -Value bar",
 		},
 		{
-			Case:  "CMD",
-			Shell: CMD,
-			Expected: `local p = assert(io.popen("doskey foo=bar"))
-p:close()`,
+			Case:     "CMD",
+			Shell:    CMD,
+			Expected: "macrofile:write(\"foo=bar\", \"\\n\")",
 		},
 		{
 			Case:     "FISH",

src/shell/cmd.go

@@ -8,13 +8,27 @@ const (
 
 func (a *Alias) cmd() *Alias {
 	if a.Type == Command {
-		a.template = `local p = assert(io.popen("doskey {{ .Name }}={{ escapeString .Value }}"))
-p:close()`
+		a.template = "macrofile:write(\"{{ .Name }}={{ escapeString .Value }}\", \"\\n\")"
 	}
 
 	return a
 }
 
+func cmdAliasPre() string {
+	return `
+local filename  = os.tmpname()
+local macrofile = io.open(filename, "w+")
+`
+}
+
+func cmdAliasPost() string {
+	return `
+macrofile:close()
+local _ = io.popen(string.format("doskey /macrofile=%s", filename)):close()
+os.remove(filename)
+`
+}
+
 func (e *Echo) cmd() *Echo {
 	e.template = `message = [[
 {{ .Message }}