feat: process variables in include vars (#2113)

* feat: process variables in include vars

* feat: add test for include variables

Author: pd93

task_test.go

@@ -1961,6 +1961,10 @@ task: [included3:task1] echo "VAR_1 is included-default-var1"
 VAR_1 is included-default-var1
 task: [included3:task1] echo "VAR_2 is included-default-var2"
 VAR_2 is included-default-var2
+task: [included4:task1] echo "VAR_1 is included4-var1"
+VAR_1 is included4-var1
+task: [included4:task1] echo "VAR_2 is included-default-var2"
+VAR_2 is included-default-var2
 `)
 	require.NoError(t, e.Run(context.Background(), &task.Call{Task: "task1"}))
 	t.Log(buff.String())

taskfile/reader.go

@@ -254,7 +254,7 @@ func (r *Reader) include(node Node) error {
 				Aliases:        include.Aliases,
 				AdvancedImport: include.AdvancedImport,
 				Excludes:       include.Excludes,
-				Vars:           include.Vars,
+				Vars:           templater.ReplaceVars(include.Vars, cache),
 			}
 			if err := cache.Err(); err != nil {
 				return err

testdata/include_with_vars/Taskfile.yml

@@ -1,20 +1,28 @@
 version: "3"
 
+vars:
+  VAR_1: included4-var1
+
 includes:
   included1:
-    taskfile: include/Taskfile.include1.yml
+    taskfile: include/Taskfile.include.yml
     vars:
       VAR_1: included1-var1
   included2:
-    taskfile: include/Taskfile.include2.yml
+    taskfile: include/Taskfile.include.yml
     vars:
       VAR_1: included2-var1
   included3:
-    taskfile: include/Taskfile.include3.yml
+    taskfile: include/Taskfile.include.yml
+  included4:
+    taskfile: include/Taskfile.include.yml
+    vars:
+      VAR_1: "{{.VAR_1}}"
 
 tasks:
   task1:
     cmds:
       - task: included1:task1
       - task: included2:task1
       - task: included3:task1
+      - task: included4:task1