fix assign the correct value to the proxy

README.md

@@ -57,16 +57,17 @@ type Definition struct {
 
 The following tags are supported:
 
-| Tag           | Context | Description                                |
-|---------------|---------|--------------------------------------------|
-| `short`       | Value   | Short name of the flag.                    |
-| `long`        | Value   | Long name of the flag.                     |
-| `description` | Value   | Description of the flag.                   |
-| `required`    | Value   | Flag is required.                          |
-| `shadow`      | Value | Copy the value to the shadow structure.    |
-| `command`     | Command | Flag is a command.                         |
-| `call`        | Command | Function to call when the command is used. |
-| `ignore`      | -/-     | Property is ignored.                       |
+| Tag           | Context  | Description                                    |
+|---------------|----------|------------------------------------------------|
+| `short`       | Value    | Short name of the flag.                        |
+| `long`        | Value    | Long name of the flag.                         |
+| `description` | Value    | Description of the flag.                       |
+| `required`    | Value    | Flag is required.                              |
+| `proxy`       | Value    | Copy the value to the proxy structure.         |
+| `command`     | Command  | Flag is a command.                             |
+| `call`        | Command  | Function to call when the command is used.     |
+| `ignore`      | -/-      | Property is ignored.                           |
+
 
 ### Callbacks
 
@@ -148,9 +149,8 @@ setting.Execute()
 
 ### Proxy
 
-The proxy structure is used to copy the values of the flags to the
-proxy structure. The proxy structure is used to access the values of the
-flags.
+The proxy structure is used to copy the values of the flags to a other
+structure. 
 
 The proxy structure must implement the `Proxy` interface.
 
@@ -174,6 +174,8 @@ func main() {
 }
 ```
 
+The path in the structure is defined by the tag `proxy`.
+
 ### Arguments
 
 the free arguments can be fetched with the method `Args()`.

command.go

@@ -12,6 +12,7 @@ type cmd[C any] struct {
 	name         string
 	flagSet      *flag.FlagSet
 	tagMapping   map[string]string
+	proxyMapping map[string]string
 	commands     []*cmd[C]
 	settings     *Settings[C]
 	valuePath    []string
@@ -60,6 +61,7 @@ func buildCommandStruct[C any](s *Settings[C], name, fkt string, errorHandling f
 		commands:     []*cmd[C]{},
 		settings:     s,
 		tagMapping:   map[string]string{},
+		proxyMapping: map[string]string{},
 		valuePath:    path,
 		functionName: fkt,
 	}
@@ -148,6 +150,10 @@ func (c *cmd[C]) parseStruct(dta any) {
 				continue
 			}
 
+			if m[tagProxy] != "" {
+				c.proxyMapping[v.Type().Field(i).Name] = m[tagProxy]
+			}
+
 			if m[tagShort] != "" {
 				c.tagMapping[m[tagShort]] = v.Type().Field(i).Name
 			}

execute_test.go

@@ -12,12 +12,12 @@ import (
 type testExecutionStruct struct {
 	callbackCounter int `ignore:"true"`
 
-	// for tag shadow see TestFlagCopyToShadow
-	Global1  bool `short:"a" long:"global1" description:"Global 1" shadow:"ValGlobal1"`
+	// for tag proxy see TestFlagCopyToProxy
+	Global1  bool `short:"a" long:"global1" description:"Global 1" proxy:"ValGlobal1"`
 	Global2  bool `short:"b" long:"global2" description:"Global 2"`
 	Command1 struct {
 		Command1Flag1 bool `short:"c" long:"command1flag1" description:"Command 1 Flag 1"`
-		Command1Flag2 bool `short:"d" long:"command1flag2" description:"Command 1 Flag 2" shadow:"ValCommand1Flag2"`
+		Command1Flag2 bool `short:"d" long:"command1flag2" description:"Command 1 Flag 2" proxy:"ValCommand1Flag2"`
 		Command2      struct {
 			Command2Flag1 bool `short:"e" long:"command2flag1" description:"Command 2 Flag 1"`
 			Command2Flag2 bool `short:"f" long:"command2flag2" description:"Command 2 Flag 2"`

mapping.go

@@ -53,6 +53,10 @@ func (s *Settings[C]) assignValues(c cmd[C]) {
 			s.errors = append(s.errors, err)
 		}
 
+		if c.proxyMapping[k] != "" {
+			p = c.proxyMapping[k]
+		}
+
 		s.mapping[p] = value
 
 		return

mapping_test.go

@@ -21,7 +21,7 @@ type ConfigStruct6 struct {
 	ValSub           ConfigStruct6Sub1
 }
 
-func TestFlagCopyToShadow(t *testing.T) {
+func TestFlagCopyToProxy(t *testing.T) {
 
 	c := ConfigStruct6{}
 	c.ValSub.Command3Flag1 = true
@@ -40,8 +40,9 @@ func TestFlagCopyToShadow(t *testing.T) {
 }
 
 func (s *ConfigStruct6) Copy(m map[string]any) {
-	pathfinder.SetValue(s, "ValGlobal1", (m["Global1"]))
-	pathfinder.SetValue(s, "ValCommand1Flag2", (m["Command1.Command1Flag2"]))
+	for k, v := range m {
+		pathfinder.SetValue(s, k, v)
+	}
 }
 
 func TestCopyable(t *testing.T) {

tags.go

@@ -15,6 +15,7 @@ const (
 	tagShort       = "short"
 	tagLong        = "long"
 	tagDescription = "description"
+	tagProxy       = "proxy"
 )
 
 func getTagMap(field reflect.StructField) (value map[string]string) {