Add a Preview feature

JelleZijlstra · JelleZijlstra · commit ba2cc11af65d · 2023-10-16T05:27:10.000-07:00
diff --git a/src/black/linegen.py b/src/black/linegen.py
@@ -566,7 +566,7 @@ def transform_line(
     # split the line. Default to line_str, if no power operator are present on the line.
     line_str_hugging_power_ops = (
         (_hugging_power_ops_line_to_string(line, features, mode) or line_str)
-        if mode.preview
+        if Preview.fix_power_op_line_length in mode
         else line_str
     )
 
diff --git a/src/black/mode.py b/src/black/mode.py
@@ -188,6 +188,7 @@ class Preview(Enum):
     dummy_implementations = auto()
     walrus_subscript = auto()
     module_docstring_newlines = auto()
+    fix_power_op_line_length = auto()
 
 
 class Deprecated(UserWarning):

Original file line number	Diff line number	Diff line change
`@@ -566,7 +566,7 @@ def transform_line(`
`566`	`566`	`# split the line. Default to line_str, if no power operator are present on the line.`
`567`	`567`	`line_str_hugging_power_ops = (`
`568`	`568`	`(_hugging_power_ops_line_to_string(line, features, mode) or line_str)`
`569`		`- if mode.preview`
	`569`	`+ if Preview.fix_power_op_line_length in mode`
`570`	`570`	`else line_str`
`571`	`571`	`)`
`572`	`572`