initial pass at deferred commands

taskfile/cmd.go

@@ -7,6 +7,7 @@ type Cmd struct {
 	Task        string
 	Vars        *Vars
 	IgnoreError bool
+	Defer       bool
 }
 
 // Dep is a task dependency
@@ -33,6 +34,18 @@ func (c *Cmd) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		c.IgnoreError = cmdStruct.IgnoreError
 		return nil
 	}
+	var deferredCmd struct {
+		Defer string
+	}
+	if err := unmarshal(&deferredCmd); err == nil && deferredCmd.Defer != "" {
+		c.Defer = true
+		if strings.HasPrefix(deferredCmd.Defer, "^") {
+			c.Task = strings.TrimPrefix(deferredCmd.Defer, "^")
+		} else {
+			c.Cmd = deferredCmd.Defer
+		}
+		return nil
+	}
 	var taskCall struct {
 		Task string
 		Vars *Vars