X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/c23a5c15aac963b460fdb1327ae875aafafafd41..c76e0b03ec706619cc76bbd45e9c355c18462e2e:/docs/the_black_code_style/current_style.md diff --git a/docs/the_black_code_style/current_style.md b/docs/the_black_code_style/current_style.md index 0f166fe..e2625f9 100644 --- a/docs/the_black_code_style/current_style.md +++ b/docs/the_black_code_style/current_style.md @@ -140,6 +140,8 @@ If you're reaching for backslashes, that's a clear signal that you can do better slightly refactor your code. I hope some of the examples above show you that there are many ways in which you can do it. +(labels/line-length)= + ### Line length You probably noticed the peculiar default line length. _Black_ defaults to 88 characters @@ -194,7 +196,45 @@ that in-function vertical whitespace should only be used sparingly. _Black_ will allow single empty lines inside functions, and single and double empty lines on module level left by the original editors, except when they're within parenthesized expressions. Since such expressions are always reformatted to fit minimal -space, this whitespace is lost. +space, this whitespace is lost. The other exception is that it will remove any empty +lines immediately following a statement that introduces a new indentation level. + +```python +# in: + +def foo(): + + print("All the newlines above me should be deleted!") + + +if condition: + + print("No newline above me!") + + print("There is a newline above me, and that's OK!") + + +class Point: + + x: int + y: int + +# out: + +def foo(): + print("All the newlines above me should be deleted!") + + +if condition: + print("No newline above me!") + + print("There is a newline above me, and that's OK!") + + +class Point: + x: int + y: int +``` It will also insert proper spacing before and after function definitions. It's one line before and after inner functions and two lines before and after module-level functions @@ -235,6 +275,8 @@ A pre-existing trailing comma informs _Black_ to always explode contents of the bracket pair into one item per line. Read more about this in the [Pragmatism](#pragmatism) section below. +(labels/strings)= + ### Strings _Black_ prefers double quotes (`"` and `"""`) over single quotes (`'` and `'''`). It @@ -419,6 +461,8 @@ there were not many users anyway. Not many edge cases were reported. As a mature _Black_ does make some exceptions to rules it otherwise holds. This section documents what those exceptions are and why this is the case. +(labels/magic-trailing-comma)= + ### The magic trailing comma _Black_ in general does not take existing formatting into account. @@ -455,6 +499,8 @@ default by (among others) GitHub and Visual Studio Code, differentiates between r-strings and R-strings. The former are syntax highlighted as regular expressions while the latter are treated as true raw strings with no special semantics. +(labels/ast-changes)= + ### AST before and after formatting When run with `--safe` (the default), _Black_ checks that the code before and after is @@ -464,8 +510,8 @@ AST of the target. There are three limited cases in which the AST does differ: 1. _Black_ cleans up leading and trailing whitespace of docstrings, re-indenting them if needed. It's been one of the most popular user-reported features for the formatter to fix whitespace issues with docstrings. While the result is technically an AST - difference, due to the various possibilities of forming docstrings, all realtime use - of docstrings that we're aware of sanitizes indentation and leading/trailing + difference, due to the various possibilities of forming docstrings, all real-world + uses of docstrings that we're aware of sanitize indentation and leading/trailing whitespace anyway. 1. _Black_ manages optional parentheses for some statements. In the case of the `del`