Fix TypeError in bash parsing with unclosed backticks (#7392)

Co-authored-by: openhands <openhands@all-hands.dev>

openhands/runtime/utils/bash.py

@@ -25,7 +25,7 @@ def split_bash_commands(commands: str) -> list[str]:
         return ['']
     try:
         parsed = bashlex.parse(commands)
-    except (bashlex.errors.ParsingError, NotImplementedError):
+    except (bashlex.errors.ParsingError, NotImplementedError, TypeError):
         logger.debug(
             f'Failed to parse bash commands\n'
             f'[input]: {commands}\n'
@@ -145,7 +145,7 @@ def escape_bash_special_chars(command: str) -> str:
         remaining = command[last_pos:]
         parts.append(remaining)
         return ''.join(parts)
-    except (bashlex.errors.ParsingError, NotImplementedError):
+    except (bashlex.errors.ParsingError, NotImplementedError, TypeError):
         logger.debug(
             f'Failed to parse bash commands for special characters escape\n'
             f'[input]: {command}\n'

tests/unit/test_bash_parsing.py

@@ -155,6 +155,31 @@ def test_invalid_syntax():
         assert split_bash_commands(input_command) == [input_command]
 
 
+def test_unclosed_backtick():
+    # This test reproduces issue #7391
+    # The issue occurs when parsing a command with an unclosed backtick
+    # which causes a TypeError: ParsingError.__init__() missing 2 required positional arguments: 's' and 'position'
+    command = 'echo `unclosed backtick'
+
+    # Should not raise TypeError
+    try:
+        result = split_bash_commands(command)
+        # If we get here, the error was handled properly
+        assert result == [command]
+    except TypeError as e:
+        # This is the error we're trying to fix
+        raise e
+
+    # Also test with the original command from the issue (with placeholder org/repo)
+    curl_command = 'curl -X POST "https://api.github.com/repos/example-org/example-repo/pulls" \\ -H "Authorization: Bearer $GITHUB_TOKEN" \\ -H "Accept: application/vnd.github.v3+json" \\ -d \'{ "title": "XXX", "head": "XXX", "base": "main", "draft": false }\' `echo unclosed'
+
+    try:
+        result = split_bash_commands(curl_command)
+        assert result == [curl_command]
+    except TypeError as e:
+        raise e
+
+
 @pytest.fixture
 def sample_commands():
     return [