Adds --carry flag to enable carrying error codes from task cmds

cmd/task/task.go

@@ -68,6 +68,7 @@ func main() {
 		silent      bool
 		dry         bool
 		summary     bool
+		carryErr    bool
 		parallel    bool
 		concurrency int
 		dir         string
@@ -89,6 +90,7 @@ func main() {
 	pflag.BoolVarP(&parallel, "parallel", "p", false, "executes tasks provided on command line in parallel")
 	pflag.BoolVar(&dry, "dry", false, "compiles and prints tasks in the order that they would be run, without executing them")
 	pflag.BoolVar(&summary, "summary", false, "show summary about a task")
+	pflag.BoolVar(&carryErr, "carry", false, "carry error code if any")
 	pflag.StringVarP(&dir, "dir", "d", "", "sets directory of execution")
 	pflag.StringVarP(&entrypoint, "taskfile", "t", "", `choose which Taskfile to run. Defaults to "Taskfile.yml"`)
 	pflag.StringVarP(&output.Name, "output", "o", "", "sets output style: [interleaved|group|prefixed]")
@@ -216,7 +218,13 @@ func main() {
 
 	if err := e.Run(ctx, calls...); err != nil {
 		e.Logger.Errf(logger.Red, "%v", err)
-		os.Exit(1)
+		code := 1
+		if carryErr {
+			if tre, ok := err.(*task.TaskRunError); ok {
+				code = tre.ExitCode()
+			}
+		}
+		os.Exit(code)
 	}
 }
 

errors.go

@@ -3,6 +3,7 @@ package task
 import (
 	"errors"
 	"fmt"
+	"mvdan.cc/sh/v3/interp"
 )
 
 var (
@@ -18,15 +19,23 @@ func (err *taskNotFoundError) Error() string {
 	return fmt.Sprintf(`task: Task "%s" not found`, err.taskName)
 }
 
-type taskRunError struct {
+type TaskRunError struct {
 	taskName string
 	err      error
 }
 
-func (err *taskRunError) Error() string {
+func (err *TaskRunError) Error() string {
 	return fmt.Sprintf(`task: Failed to run task "%s": %v`, err.taskName, err.err)
 }
 
+func (err *TaskRunError) ExitCode() int {
+	if c, ok := interp.IsExitStatus(err.err); ok {
+		return int(c)
+	}
+
+	return 1
+}
+
 // MaximumTaskCallExceededError is returned when a task is called too
 // many times. In this case you probably have a cyclic dependendy or
 // infinite loop

task.go

@@ -363,7 +363,7 @@ func (e *Executor) RunTask(ctx context.Context, call taskfile.Call) error {
 					continue
 				}
 
-				return &taskRunError{t.Task, err}
+				return &TaskRunError{t.Task, err}
 			}
 		}
 		e.Logger.VerboseErrf(logger.Magenta, `task: "%s" finished`, call.Task)

watch.go

@@ -88,7 +88,7 @@ func (e *Executor) watchTasks(calls ...taskfile.Call) error {
 }
 
 func isContextError(err error) bool {
-	if taskRunErr, ok := err.(*taskRunError); ok {
+	if taskRunErr, ok := err.(*TaskRunError); ok {
 		err = taskRunErr.err
 	}