Add index to Share statement.

src/eval/expr.rs

@@ -188,7 +188,7 @@ impl Engine {
             // Find the variable in the scope
             let var_name = expr.get_variable_name(true).expect("`Expr::Variable`");
 
-            match scope.get_index(var_name) {
+            match scope.search(var_name) {
                 Some(index) => index,
                 None => {
                     return match self.global_modules.iter().find_map(|m| m.get_var(var_name)) {

src/eval/stmt.rs

@@ -959,7 +959,7 @@ impl Engine {
             Stmt::Export(x, ..) => {
                 let (Ident { name, pos, .. }, Ident { name: alias, .. }) = &**x;
                 // Mark scope variables as public
-                if let Some(index) = scope.get_index(name) {
+                if let Some(index) = scope.search(name) {
                     let alias = if alias.is_empty() { name } else { alias }.clone();
                     scope.add_alias_by_index(index, alias.into());
                     Ok(Dynamic::UNIT)
@@ -970,8 +970,13 @@ impl Engine {
 
             // Share statement
             #[cfg(not(feature = "no_closure"))]
-            Stmt::Share(name, pos) => {
-                if let Some(index) = scope.get_index(name) {
+            Stmt::Share(x, pos) => {
+                let (name, index) = &**x;
+
+                if let Some(index) = index
+                    .map(|n| scope.len() - n.get())
+                    .or_else(|| scope.search(name))
+                {
                     let val = scope.get_mut_by_index(index);
 
                     if !val.is_shared() {