[Idle-dev] First line and cursor not visible when opening a file.

Bruce Sherwood Bruce_Sherwood at ncsu.edu
Sun Jul 17 22:45:55 CEST 2011

I think this is one of the many bugs fixed by Guilherme Polo, which
alas has never made it into the standard release.


On Sun, Jul 17, 2011 at 9:33 AM, Tal Einat <taleinat at gmail.com> wrote:
> On Sun, Jul 17, 2011 at 2:20 AM, Simon Forman <forman.simon at gmail.com> wrote:
>> On Thu, Jul 14, 2011 at 3:13 PM, Simon Forman <forman.simon at gmail.com> wrote:
>>> I apologize if this is old news. I searched the Python bug tracker and
>>> idle-dev list without finding any mention,
>>> I'm using IDLE 2.6.5 on Ubuntu 10.04.
>>> When I open a file that is longer than the edit window the first line
>>> (containing the cursor) is above the top of the edit window.  Put
>>> another way, the file opens with the second line at the top of the
>>> window rather than the first, giving the impression that the file
>>> starts at the second line, and that the cursor is absent.
>>> I figured I'd ask about it here before filing a bug.
>>> Can anyone shed any light on this behavior?
>>> Warm regards,
>>> ~Simon
>> I took a look in the code but I couldn't figure out where or why this
>> was happening. I managed to "fix" it by adding the following to the
>> end of the EditorWindow __init__ method:
>>        text.see('insert')
>> Is this worth a bug report and patch?
> Hi Simon,
> EditorWindow.__init__() already calls io.loadfile() when opening a
> file, which includes the following near the end:
> self.text.mark_set("insert", "1.0")
> self.text.see("insert")
> However, EditorWindow.__init__() also does a few more things
> afterwards. The only thing that I can think of right now that would
> have such an effect is the CodeContext extension, which is loaded by
> the self.load_extensions() call after io.loadfile(). Could you try
> disabling this extension (in the config file) and see if this has an
> effect?
> - Tal Einat
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