How can I break lines in vim?

[RidaAyed]

Howdy! Sorry you're having trouble. To expedite your experience,
provide some basics for me:

Operating system: Linux Arch
Python version: 3.6.65
Black version: Black, version 18.6b2 on Python 3.6.5 (default, May 11 2018, 04:00:52)
[GCC 8.1.0].
Does also happen on master: 🤔

To answer the last question, follow these steps:

• create a new virtualenv (make sure it's the same Python version);
• clone this repository;
• run pip install -e .;
• make sure it's sane by running python setup.py test; and
• run black like you did last time.

How can I break lines in vim?

Hi

How can I break lines using :Black to format from this?

headers = {
        'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36',
        }

to that:

headers = {
        'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 \
        (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36',
        }

P.S. Can't answer last question due to:

(blacktest-M_xMekwm) ra @ ~/dev/blacktest/black
master└─ $ pip install -e

Usage:   
  pip install [options] <requirement specifier> [package-index-options] ...
  pip install [options] -r <requirements file> [package-index-options] ...
  pip install [options] [-e] <vcs project url> ...
  pip install [options] [-e] <local project path> ...
  pip install [options] <archive url/path> ...

-e option requires 1 argument

[RidaAyed]

Does also happen on master: Yes

$ black code.py does NOT break lines as well

[JelleZijlstra]

You need to do pip install -e . to install from master (don't forget the dot). Is there documentation that has the wrong command?

Breaking up long strings is already an open issue: #182.

[RidaAyed]

@JelleZijlstra Indeed I've missed the .

[ambv]

@RidaAyed, the break you're suggesting doesn't do what you think. Since it's a backslash inside a string literal, all the other extra whitespace will be preserved as extra spaces inside the string. If you omit the extra spaces, the line will just wrong being dedented compared to the rest of the code.

What you want is this:

headers = {
    "User-Agent": (
        "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 "
        "(KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"
    ),
}

If you're question is about "how to invoke Black from Vim", then the answer to that is "with :Black or ,=".

[RidaAyed]

Thank you @ambv Lukasz. Yes, you're right, how can I get these lines breaked as you outlined?

[JelleZijlstra]

That's the issue I linked above; Black doesn't implement it yet.

[ambv]

@JelleZijlstra, true, but if you format this yourself, Black will keep it.

[ambv]

Closing this as a duplicate of #182. If there's anything more that's actionable here, please open a new issue.