Experimental, potentially disruptive style changes are gathered under the `--preview`
CLI flag. At the end of each year, these changes may be adopted into the default style,
-as described in [The Black Code Style](./index.rst). Because the functionality is
+as described in [The Black Code Style](index.md). Because the functionality is
experimental, feedback and issue reports are highly encouraged!
### Improved string processing
```python
my_dict = {
- my_dict = {
"a key in my dict": a_very_long_variable
* and_a_very_long_function_call()
/ 100000.0,
"another key": short_value,
}
```
+
+### Improved multiline string handling
+
+_Black_ is smarter when formatting multiline strings, especially in function arguments,
+to avoid introducing extra line breaks. Previously, it would always consider multiline
+strings as not fitting on a single line. With this new feature, _Black_ looks at the
+context around the multiline string to decide if it should be inlined or split to a
+separate line. For example, when a multiline string is passed to a function, _Black_
+will only split the multiline string if a line is too long or if multiple arguments are
+being passed.
+
+For example, _Black_ will reformat
+
+```python
+textwrap.dedent(
+ """\
+ This is a
+ multiline string
+"""
+)
+```
+
+to:
+
+```python
+textwrap.dedent("""\
+ This is a
+ multiline string
+""")
+```
+
+And:
+
+```python
+MULTILINE = """
+foobar
+""".replace(
+ "\n", ""
+)
+```
+
+to:
+
+```python
+MULTILINE = """
+foobar
+""".replace("\n", "")
+```