Added some missing license headers and some cosmetic changes.

examples/os_env.fun

@@ -1,5 +1,14 @@
 #!/usr/bin/env fun
 
+/*
+ * This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
 // Environment variables via env(name):
 // - Returns the value as a string.
 // - If the variable is not set, returns an empty string.

src/bytecode.c

@@ -7,10 +7,8 @@
  * https://opensource.org/license/isc-license-txt
  */
 
-
 #include "bytecode.h"
 #include <stdlib.h>
-#include <string.h>
 #include <stdio.h>
 
 Bytecode *bytecode_new(void) {

src/bytecode.h

@@ -7,7 +7,6 @@
  * https://opensource.org/license/isc-license-txt
  */
 
-
 #ifndef FUN_BYTECODE_H
 #define FUN_BYTECODE_H
 

src/value.h

@@ -35,7 +35,6 @@
  * @date 2025-10-16
  */
 
-
 #ifndef FUN_VALUE_H
 #define FUN_VALUE_H
 

src/vm/line.c

@@ -1,3 +1,12 @@
+/**
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
 case OP_LINE: {
     /* operand holds the source line number */
     vm->current_line = inst.operand;

src/vm/os/env.c

@@ -1,3 +1,14 @@
+/**
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
+// Get environment variables of the operation system.
+
 case OP_ENV: {
     Value key = pop_value(vm);
     if (key.type != VAL_STRING) {

src/vm/sclamp.c

@@ -1,3 +1,12 @@
+/**
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
 case OP_SCLAMP: {
     /* Clamp/wrap to signed N-bit range: [-2^(N-1), 2^(N-1)-1] */
     Value v = pop_value(vm);

src/vm/typeof.c

@@ -1,3 +1,12 @@
+/**
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
 case OP_TYPEOF: {
     Value v = pop_value(vm);
     const char *tname = "Unknown";

src/vm/uclamp.c

@@ -1,3 +1,12 @@
+/**
+* This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the ISC license.
+ * https://opensource.org/license/isc-license-txt
+ */
+
 case OP_UCLAMP: {
     /* Clamp/wrap the integer on top of the stack to 'bits' width (unsigned) */
     Value v = pop_value(vm);