Add dedicated preview feature for East Asian Width (#4097)

psf · Dec 10, 2023 · ce28be2 · ce28be2
1 parent 61b529b
commit ce28be2
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/src/black/lines.py b/src/black/lines.py
@@ -851,7 +851,7 @@ def is_line_short_enough( # noqa: C901
  if not line_str:
  line_str = line_to_string(line)
 
- width = str_width if mode.preview else len
+ width = str_width if Preview.respect_east_asian_width in mode else len
 
  if Preview.multiline_string_handling not in mode:
  return (

diff --git a/src/black/mode.py b/src/black/mode.py
@@ -195,6 +195,7 @@ class Preview(Enum):
  single_line_format_skip_with_multiple_comments = auto()
  long_case_block_line_splitting = auto()
  allow_form_feeds = auto()
+ respect_east_asian_width = auto()
 
 
 class Deprecated(UserWarning):