chore: revert IsEscapeCharacter unsigned change

Fixes #230

Author: daantimmer

cucumber_cpp/library/cucumber_expression/Ast.cpp

@@ -115,12 +115,12 @@ namespace cucumber_cpp::library::cucumber_expression
         return end;
     }
 
-    bool Token::IsEscapeCharacter(char ch)
+    bool Token::IsEscapeCharacter(unsigned char ch)
     {
         return ch == '\\';
     }
 
-    TokenType Token::TypeOf(char ch)
+    TokenType Token::TypeOf(unsigned char ch)
     {
         if (std::isspace(ch) != 0)
             return TokenType::whiteSpace;
@@ -131,7 +131,7 @@ namespace cucumber_cpp::library::cucumber_expression
         return TokenType::text;
     }
 
-    bool Token::CanEscape(char ch)
+    bool Token::CanEscape(unsigned char ch)
     {
         if (std::isspace(ch) != 0)
             return true;

cucumber_cpp/library/cucumber_expression/Ast.hpp

@@ -69,9 +69,9 @@ namespace cucumber_cpp::library::cucumber_expression
         std::size_t Start() const;
         std::size_t End() const;
 
-        static bool IsEscapeCharacter(char ch);
-        static TokenType TypeOf(char ch);
-        static bool CanEscape(char ch);
+        static bool IsEscapeCharacter(unsigned char ch);
+        static TokenType TypeOf(unsigned char ch);
+        static bool CanEscape(unsigned char ch);
         static std::string NameOf(TokenType type);
         static std::string SymbolOf(TokenType type);
         static std::string PurposeOf(TokenType type);