https://github.com/python/cpython/commit/0dd463c8a4269137ebed7cc29605c555030... commit: 0dd463c8a4269137ebed7cc29605c555030df94f branch: master author: Serhiy Storchaka <storchaka@gmail.com> committer: GitHub <noreply@github.com> date: 2020-07-24T23:21:30-04:00 summary: bpo-41373: IDLE: Fix saving files loaded with no newlines or mixed newlines (GH-21597) Fixes regression in 3.8.4 and 3.9.0b4. Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu> files: A Misc/NEWS.d/next/IDLE/2020-07-24-17-49-58.bpo-41373.YQIPu_.rst M Lib/idlelib/iomenu.py diff --git a/Lib/idlelib/iomenu.py b/Lib/idlelib/iomenu.py index 74ebefd4208f7..8bb2fa6a6e793 100644 --- a/Lib/idlelib/iomenu.py +++ b/Lib/idlelib/iomenu.py @@ -155,6 +155,17 @@ def loadfile(self, filename): parent=self.text) return False + if not isinstance(eol_convention, str): + # If the file does not contain line separators, it is None. + # If the file contains mixed line separators, it is a tuple. + if eol_convention is not None: + tkMessageBox.showwarning("Mixed Newlines", + "Mixed newlines detected.\n" + "The file will be changed on save.", + parent=self.text) + converted = True + eol_convention = os.linesep # default + self.text.delete("1.0", "end") self.set_filename(None) self.fileencoding = fileencoding diff --git a/Misc/NEWS.d/next/IDLE/2020-07-24-17-49-58.bpo-41373.YQIPu_.rst b/Misc/NEWS.d/next/IDLE/2020-07-24-17-49-58.bpo-41373.YQIPu_.rst new file mode 100644 index 0000000000000..b50a72fe676a8 --- /dev/null +++ b/Misc/NEWS.d/next/IDLE/2020-07-24-17-49-58.bpo-41373.YQIPu_.rst @@ -0,0 +1,3 @@ +Save files loaded with no line ending, as when blank, or different line +endings, by setting its line ending to the system default. Fix regression in +3.8.4 and 3.9.0b4.