Petr Viktorin added the comment:
I can reproduce this with Python 2.7.11 and somewhat recent build from hg
default (3.6.0a0) on Fedora 23.
Putting these lines in my personal config-main.cfg solves this::
[EditorWindow]
font= courier
idlelib/config-main.def has a different default::
[EditorWindow]
font= TkFixedFont
Putting that value in my personal config-main.cfg makes the bug manifest itself
again.
With "nonexistent-font-name-7202125ed0a", the bug does not appear.
With an existing font, "DejaVu Sans Mono", the bug does not appear.
I hacked the code to get the values used in the line,
``self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))``. For
TkFixedFont (the buggy case), they are::
self._w:
'.139719100555208.139719021773312.139719021373632.139719021374064.139719021375144.13971902101484
0.139719021045736.139719021045880'
cmd: 'configure'
cnf: {'font': ('dejavu sans mono', '', 'normal')}
_flatten((self._w, cmd)):
('.139719100555208.139719021773312.139719021373632.139719021374064.139719021375144.1397190210148
40.139719021045736.139719021045880', 'configure')
self._options(cnf): ('-font', u'{dejavu sans mono} {} normal')
For the good case ("courier" font):
self._w:'.140181531287496.140181452501216.140181451999568.140181451999712.140181452055904.140181451660176.140181451660464',
cmd: 'configure'
cnf: {'font': ('courier', '10', 'normal')}
_flatten((self._w, cmd)):
('.140181531287496.140181452501216.140181451999568.140181451999712.140181452055904.140181451660176.140181451660464',
'configure')
self._options(cnf): ('-font', u'courier 10 normal')
The difference is indeed that it's getting an empty string for the font size.
This happens even if "font-size= 10" is explicitly in the config file.
At this point I'm not sure how to investigate further. Could someone more
familiar with Tk look at the issue? I'll be happy to provide more information.
(Hopefully bugs.python.org notifications reach my inbox.)
----------
nosy: +encukou
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Python tracker <[email protected]>
<http://bugs.python.org/issue26673>
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