Lexer

- When parsing '\o/' the state Lexer::typeIdentifierEscape had no exit but a
  successful outcome, and looped.
- Fixed test.

ChangeLog

@@ -167,6 +167,7 @@
 - TW-1424 Using a date of '1824days' (in the future) fails (thanks to Black Ops
           Testing).
 - TW-1428 Add support for color.uda.<name>.<value> rules.
+- TW-1436 Parser hangs when multiple slashes are used.
 - Removed deprecated 'echo.command' setting, in favor of the 'header' and
   'affected' verbosity tokens.
 - Removed deprecated 'edit.verbose' setting, in favor of the 'edit' verbosity

src/Lexer.cpp

@@ -244,6 +244,12 @@ bool Lexer::token (std::string& result, Type& type)
         type = typeEscapeUnicode;
         shift ();
       }
+      else
+      {
+        type = quote ? typeString : typeIdentifier;
+        result += utf8_character (_n0);
+        shift ();
+      }
       break;
 
     case typeEscape:

test/tw-1436.t

@@ -15,7 +15,7 @@ class TestBug1436(TestCase):
         self.t = Task()
 
     def test_parser_hangs_with_slashes(self):
-        """Parser hangs with slashes"""
+        """Parser hangs with backslashes"""
         expected = "Cheer everyone up \o/"
         code, out, err = self.t(("add", expected))
         self.assertIn("Created task 1", out)
@@ -24,13 +24,12 @@ class TestBug1436(TestCase):
         self.assertIn(expected, out)
 
     def test_parser_ending_escape_slash(self):
-        """Task created but not found with ending slash"""
-        expected = "Use this slash \\"
-        code, out, err = self.t(("add", expected))
+        """Task created but not found with ending backslash"""
+        code, out, err = self.t(("add", "Use this backslash \\\\"))
         self.assertIn("Created task 1", out)
 
         code, out, err = self.t(("list",))
-        self.assertIn(expected, out)
+        self.assertIn("Use this backslash \\", out)
 
 
 if __name__ == "__main__":