Fix use statement list context and sort method call parsing

src/main/java/org/perlonjava/app/scriptengine/PerlLanguageProvider.java

@@ -205,6 +205,7 @@ public static RuntimeList executePerlCode(CompilerOptions compilerOptions,
 
     /**
      * Executes the given Perl code using a syntax tree and returns the result.
+     * Uses VOID context by default.
      *
      * @param ast             The abstract syntax tree representing the Perl code.
      * @param tokens          The list of tokens representing the Perl code.
@@ -214,6 +215,22 @@ public static RuntimeList executePerlCode(CompilerOptions compilerOptions,
     public static RuntimeList executePerlAST(Node ast,
                                              List<LexerToken> tokens,
                                              CompilerOptions compilerOptions) throws Exception {
+        return executePerlAST(ast, tokens, compilerOptions, RuntimeContextType.VOID);
+    }
+
+    /**
+     * Executes the given Perl code using a syntax tree with specified context.
+     *
+     * @param ast             The abstract syntax tree representing the Perl code.
+     * @param tokens          The list of tokens representing the Perl code.
+     * @param compilerOptions Compiler flags, file name and source code.
+     * @param contextType     The context to use for execution (VOID, SCALAR, LIST).
+     * @return The result of the Perl code execution.
+     */
+    public static RuntimeList executePerlAST(Node ast,
+                                             List<LexerToken> tokens,
+                                             CompilerOptions compilerOptions,
+                                             int contextType) throws Exception {
 
         // Save the current scope so we can restore it after execution.
         ScopedSymbolTable savedCurrentScope = SpecialBlockParser.getCurrentScope();
@@ -229,7 +246,7 @@ public static RuntimeList executePerlAST(Node ast,
                 globalSymbolTable.snapShot(),
                 null,
                 null,
-                RuntimeContextType.VOID,
+                contextType,
                 true,
                 null,
                 compilerOptions,
@@ -255,8 +272,7 @@ public static RuntimeList executePerlAST(Node ast,
             // Compile to executable (compiler or interpreter based on flag)
             RuntimeCode runtimeCode = compileToExecutable(ast, ctx);
 
-            // executePerlAST is always called from special blocks which use VOID context
-            return executeCode(runtimeCode, ctx, false, RuntimeContextType.VOID);
+            return executeCode(runtimeCode, ctx, false, contextType);
         } finally {
             // Restore the caller's scope
             if (savedCurrentScope != null) {

src/main/java/org/perlonjava/frontend/parser/ParseMapGrepSort.java

@@ -28,12 +28,27 @@ static BinaryOperatorNode parseSort(Parser parser, LexerToken token) {
         if (nextToken.type == LexerTokenType.IDENTIFIER && !nextToken.text.equals("{")
                 && !ParserTables.CORE_PROTOTYPES.containsKey(nextToken.text)
                 && !ParsePrimary.isIsQuoteLikeOperator(nextToken.text)) {
+            // This could be a subroutine name for comparison (sort mysub LIST)
+            // or a class name for method call (sort MyClass->method)
+            // Save position and try to determine which
+            int identStart = parser.tokenIndex;
             String subName = IdentifierParser.parseSubroutineIdentifier(parser);
-            Node var = new OperatorNode("&",
-                    new IdentifierNode(subName, parser.tokenIndex), parser.tokenIndex);
-            operand = ListParser.parseZeroOrMoreList(parser, 0, false, false, false, false);
-            operand.handle = var;
-            if (CompilerOptions.DEBUG_ENABLED) parser.ctx.logDebug("parseSort identifier: " + operand.handle + " : " + operand);
+
+            // Check if followed by -> (method call) - if so, backtrack and parse as list
+            if (peek(parser).text.equals("->")) {
+                // This is a method call like "sort MyClass->method" 
+                // Backtrack and parse the whole thing as a list expression
+                parser.tokenIndex = identStart;
+                operand = ListParser.parseZeroOrMoreList(parser, 0, false, false, false, false);
+                if (CompilerOptions.DEBUG_ENABLED) parser.ctx.logDebug("parseSort method call: " + operand);
+            } else {
+                // This is a comparison subroutine name
+                Node var = new OperatorNode("&",
+                        new IdentifierNode(subName, parser.tokenIndex), parser.tokenIndex);
+                operand = ListParser.parseZeroOrMoreList(parser, 0, false, false, false, false);
+                operand.handle = var;
+                if (CompilerOptions.DEBUG_ENABLED) parser.ctx.logDebug("parseSort identifier: " + operand.handle + " : " + operand);
+            }
         } else {
             try {
                 operand = ListParser.parseZeroOrMoreList(parser, 1, true, false, false, false);

src/main/java/org/perlonjava/frontend/parser/SpecialBlockParser.java

@@ -98,13 +98,27 @@ static Node parseSpecialBlock(Parser parser) {
 
     /**
      * Executes a special block with the given block phase and block AST.
+     * Uses VOID context by default.
      *
      * @param parser     The parser instance.
      * @param blockPhase The phase of the block (e.g., BEGIN, END).
      * @param block      The block AST to execute.
      * @return A RuntimeList containing the result of the execution.
      */
     static RuntimeList runSpecialBlock(Parser parser, String blockPhase, Node block) {
+        return runSpecialBlock(parser, blockPhase, block, RuntimeContextType.VOID);
+    }
+
+    /**
+     * Executes a special block with the given block phase, block AST, and context.
+     *
+     * @param parser      The parser instance.
+     * @param blockPhase  The phase of the block (e.g., BEGIN, END).
+     * @param block       The block AST to execute.
+     * @param contextType The context to use for execution (VOID, SCALAR, LIST).
+     * @return A RuntimeList containing the result of the execution.
+     */
+    static RuntimeList runSpecialBlock(Parser parser, String blockPhase, Node block, int contextType) {
         int tokenIndex = parser.tokenIndex;
 
         // Create AST nodes for setting up the capture variables and package declaration
@@ -252,7 +266,8 @@ static RuntimeList runSpecialBlock(Parser parser, String blockPhase, Node block)
             result = PerlLanguageProvider.executePerlAST(
                     new BlockNode(nodes, tokenIndex),
                     parser.tokens,
-                    parsedArgs);
+                    parsedArgs,
+                    contextType);
         } catch (PerlExitException e) {
             // exit() inside BEGIN block should terminate the program, not cause compilation error
             // Re-throw so it propagates to the CLI (Main.main()) which will call System.exit()

src/main/java/org/perlonjava/frontend/parser/StatementParser.java

@@ -658,8 +658,10 @@ public static Node parseUseDeclaration(Parser parser, LexerToken token) {
                 // call Module->import( LIST )
                 // or Module->unimport( LIST )
 
-                // Execute the argument list immediately
-                RuntimeList args = runSpecialBlock(parser, "BEGIN", list);
+                // Execute the argument list immediately in LIST context
+                // This is necessary for expressions like: use lib ($path =~ /^(.*)$/);
+                // where the regex match must return captured groups, not just success/failure
+                RuntimeList args = runSpecialBlock(parser, "BEGIN", list, RuntimeContextType.LIST);
 
                 if (CompilerOptions.DEBUG_ENABLED) ctx.logDebug("Use statement list: " + args);
                 if (hasParentheses && args.isEmpty()) {