fix: only log flynt result if --flynt enabled

src/darker/__main__.py

@@ -209,11 +209,6 @@ def _blacken_and_flynt_single_file(
  relative_path_in_rev2, exclude.flynt, edited_linenums_differ, rev2_isorted
  )
  has_fstring_changes = fstringified != rev2_isorted
- logger.debug(
- "Flynt resulted in %s lines, with %s changes from fstringification",
- len(fstringified.lines),
- "some" if has_fstring_changes else "no",
- )
  # 3. run black on the isorted and fstringified contents of each edited to-file
  formatted = _maybe_blacken_single_file(
  relative_path_in_rev2, exclude.black, fstringified, black_config
@@ -267,7 +262,13 @@ def _maybe_flynt_single_file(
  if glob_any(relpath_in_rev2, exclude):
  # `--flynt` option not specified, don't reformat
  return rev2_isorted
- return apply_flynt(rev2_isorted, relpath_in_rev2, edited_linenums_differ)
+ result = apply_flynt(rev2_isorted, relpath_in_rev2, edited_linenums_differ)
+ logger.debug(
+ "Flynt resulted in %s lines, with %s changes from fstringification",
+ len(result.lines),
+ "some" if result != rev2_isorted else "no",
+ )
+ return result
 
 
 def _maybe_blacken_single_file(