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bpo-38862: IDLE Strip Trailing Whitespace fixes end newlines (GH-17366)

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Extra newlines are removed at the end of non-shell files. If the file only has newlines after stripping other trailing whitespace, all are removed, as is done by patchcheck.py.
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Terry Jan Reedy 2019-11-24 16:29:29 -05:00 • committed by GitHub
parent 6f03b236c1
commit 6bf644ec82
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7 changed files with 68 additions and 40 deletions
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10
Lib/idlelib/format.py
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@ -408,6 +408,16 @@ def do_rstrip(self, event=None):
if cut < raw:
text.delete('%i.%i' % (cur, cut), '%i.end' % cur)
if (text.get('end-2c') == '\n' # File ends with at least 1 newline;
and not hasattr(self.editwin, 'interp')): # & is not Shell.
# Delete extra user endlines.
while (text.index('end-1c') > '1.0' # Stop if file empty.
and text.get('end-3c') == '\n'):
text.delete('end-3c')
# Because tk indexes are slice indexes and never raise,
# a file with only newlines will be emptied.
# patchcheck.py does the same.
undo.undo_block_stop()