X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/e8ba35277712e3ef21ce5fe11063889a5a826558..39a5fe7a55d2011d8209888b31fd6a4ea75efb71:/README.md

diff --git a/README.md b/README.md
index 35f1379..06b7324 100644
--- a/README.md
+++ b/README.md
@@ -300,6 +300,22 @@ This behaviour may raise ``W503 line break before binary operator`` warnings in
 style guide enforcement tools like Flake8. Since ``W503`` is not PEP 8 compliant,
 you should tell Flake8 to ignore these warnings.
 
+### Parentheses
+
+Some parentheses are optional in the Python grammar.  Any expression can
+be wrapped in a pair of parentheses to form an atom.  There are a few
+interesting cases:
+
+- `if (...):`
+- `while (...):`
+- `for (...) in (...):`
+- `assert (...), (...)`
+- `from X import (...)`
+
+In those cases, parentheses are removed when the entire statement fits
+in one line, or if the inner expression doesn't have any delimiters to
+further split on.  Otherwise, the parentheses are always added.
+
 
 ## Editor integration
 
@@ -479,6 +495,8 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 * added `--quiet` (#78)
 
+* added automatic parentheses management (#4)
+
 * added [pre-commit](https://pre-commit.com) integration (#103, #104)
 
 * fixed reporting on `--check` with multiple files (#101, #102)