Exception/crash when validating doc-string with \-line-break in summary

[oscargus]

def foo():
    """
    Quite long line, e.g., because I link to\
something and do not want to upset\
line length rules and keep this\
a single sentence.
    """

(Enough to have a single \, but for motivation.)

Leads to, when checking:

Handler <function mangle_docstrings at 0x000002E31CBBC550> for event 'autodoc-process-docstring' threw an exception (exception: unexpected indent (<unknown>, line 1))

Version: 1.5.0

(I guess the reason I started using \ is that some other checker, (velin?), allows this.)

[rossbar]

I'm not sure this is a numpydoc problem, at least not on its own. The parsing/conversion to the docstring object seems to handle this case okay:

>>> from numpydoc.docscrape_sphinx import SphinxFunctionDoc
>>> def foo():
...:     """A really long docstring summary \
...: https://numpydoc.readthedocs.io/en/latest/format.html#short-summary
...: 
...:     See Also
...:     --------
...:     bar
...:     """
>>> sds = SphinxFunctionDoc(foo)  # No exception here
>>> print(sds)
A really long docstring summary https://numpydoc.readthedocs.io/en/latest/format.html#short-summary










.. seealso::

    
    :obj:`bar`
        ..

It be good to confirm that this problem doesn't originate from autodoc or sphinx itself.