Merge branch 'feature-shebang-support' of git://github.com/mauvm/wren into mauvm-feature-shebang-support

src/wren_compiler.c

@@ -796,6 +796,17 @@ static void nextToken(Parser* parser)
                  peekChar(parser) == '_' ? TOKEN_STATIC_FIELD : TOKEN_FIELD);
         return;
 
+      case '#':
+        // Ignore shebang on the first line.
+        if (peekChar(parser) == '!' && parser->currentLine == 1)
+        {
+          skipLineComment(parser);
+          break;
+        }
+
+        lexError(parser, "Invalid character '%c'.", c);
+        return;
+
       default:
         if (isName(c))
         {

test/shebang/shebang.wren

@@ -0,0 +1,2 @@
+#!/bin/wren
+IO.print("ok") // expect: ok

test/shebang/shebang_at_eof.wren

@@ -0,0 +1 @@
+#!/bin/wren

test/shebang/shebang_at_other_line.wren

@@ -0,0 +1,3 @@
+// expect error line 3
+IO.print("nope")
+#!/bin/wren

test/shebang/shebang_invalid.wren

@@ -0,0 +1,3 @@
+#/invalid/shebang
+// expect error line 1
+IO.print("nope")