init-hook no longer supports multi-line hook

[jgosmann]

Bug description

Up to version 2.13.9 multi-line init-hook configurations like the following were supported:

init-hook=
    try: import pylint_venv
    except ImportError: pass
    else: pylint_venv.inithook()

From version 2.14.0 on this no longer works. The error looks like the lines are joined into a single line:

❯ pylint test.py
Traceback (most recent call last):
  File "/Users/jgosmann/Library/Python/3.8/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/__init__.py", line 25, in run_pylint
    PylintRun(argv or sys.argv[1:])
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/lint/run.py", line 151, in __init__
    args = _config_initialization(
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/config/config_initialization.py", line 48, in _config_initialization
    exec(utils._unquote(config_data["init-hook"]))  # pylint: disable=exec-used
  File "<string>", line 1
    try: import pylint_venvexcept ImportError: passelse: pylint_venv.inithook()
                                  ^
SyntaxError: invalid syntax

Configuration

init-hook=
    try: import pylint_venv
    except ImportError: pass
    else: pylint_venv.inithook()

### Command used

```shell
pylint test.py

Pylint output

Traceback (most recent call last):
  File "/Users/jgosmann/Library/Python/3.8/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/__init__.py", line 25, in run_pylint
    PylintRun(argv or sys.argv[1:])
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/lint/run.py", line 151, in __init__
    args = _config_initialization(
  File "/Users/jgosmann/Library/Python/3.8/lib/python/site-packages/pylint/config/config_initialization.py", line 48, in _config_initialization
    exec(utils._unquote(config_data["init-hook"]))  # pylint: disable=exec-used
  File "<string>", line 1
    try: import pylint_venvexcept ImportError: passelse: pylint_venv.inithook()
                                  ^
SyntaxError: invalid syntax

Expected behavior

The init-hook runs without a syntax error.

Pylint version

pylint 2.14.0 (and 2.14.1)
astroid 2.11.5
Python 3.8.13 (default, May 10 2022, 11:26:18)
[Clang 13.0.0 (clang-1300.0.29.3)]

OS / Environment

No response

Additional dependencies

pylint-venv==2.2.0

[JonathanCasey]

I have also run into this in pylint 2.14.1. The workaround I found is to add a semicolon to the end of each line. This seems to allow it to still execute each statement after joining the lines into a single line.

[jgosmann]

This does not seem to work for try-except.