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-rw-r--r--src/main/java/org/shedlang/compiler/parser/Tokeniser.java2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/org/shedlang/compiler/parser/Tokeniser.java b/src/main/java/org/shedlang/compiler/parser/Tokeniser.java
index 6e5b3f2f..fd3c440f 100644
--- a/src/main/java/org/shedlang/compiler/parser/Tokeniser.java
+++ b/src/main/java/org/shedlang/compiler/parser/Tokeniser.java
@@ -33,7 +33,7 @@ public class Tokeniser {
RegexTokeniser.rule(TokenType.SYMBOL_SEMICOLON, ";"),
RegexTokeniser.rule(TokenType.IDENTIFIER, "[A-Za-z][A-Za-z0-9]*"),
- RegexTokeniser.rule(TokenType.INT, "[0-9]+"),
+ RegexTokeniser.rule(TokenType.INT, "-?[0-9]+"),
RegexTokeniser.rule(TokenType.STRING, "\"(?:[^\\\\\"\n\r]|\\\\.)*\""),
RegexTokeniser.rule(TokenType.WHITESPACE, "[\r\n\t ]+")
)