Support parsing '?' tokens, which is a shorthand for 'PRINT'.

api/src/main/java/io/github/applecommander/bastools/api/TokenReader.java

@@ -108,7 +108,12 @@ public class TokenReader {
 								.filter(t -> opt.get().parts.get(1).equals(t.text))
 							    .orElseThrow(() -> new IOException("Expecting: " + opt.get().parts));
 						}
-						return Optional.of(Token.keyword(line, opt.get()));
+						ApplesoftKeyword outKeyword = opt.get();
+						// Special case - canonicalize '?' alternate form of 'PRINT'
+						if (opt.filter(kw -> kw == ApplesoftKeyword.questionmark).isPresent()) {
+							outKeyword = ApplesoftKeyword.PRINT;
+						}
+						return Optional.of(Token.keyword(line, outKeyword));
 					}
 					// Check if we found a directive
 					if (tokenizer.sval.startsWith("$")) {

api/src/main/java/io/github/applecommander/bastools/api/model/ApplesoftKeyword.java

@@ -71,6 +71,7 @@ public enum ApplesoftKeyword {
     DEF(0xB8, "DEF"), 
     POKE(0xB9, "POKE"), 
     PRINT(0xBA, "PRINT"), 
+    questionmark(0xBA, "?"), // Alternate form of PRINT
     CONT(0xBB, "CONT"), 
     LIST(0xBC, "LIST"), 
     CLEAR(0xBD, "CLEAR"), 
@@ -178,6 +179,7 @@ public enum ApplesoftKeyword {
 		tokenizer.resetSyntax();
 		tokenizer.wordChars('a', 'z');
 		tokenizer.wordChars('A', 'Z');
+		tokenizer.wordChars('?', '?');  // For '?' form of PRINT
 		tokenizer.wordChars('$', '$');	// Experiment to pull in string marker
 		tokenizer.wordChars('%', '%');	// Experiment to pull in integer marker
 		tokenizer.wordChars(128 + 32, 255);

tools/bt/src/test/resources/print.bas

@@ -0,0 +1 @@
+10 ? "PASS"