[racket] [racket-dev] Survey for DrRacket users related to automatic parentheses behavior

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Sat Nov 24 10:08:30 EST 2012

On Sat, Nov 24, 2012 at 8:53 AM, Laurent <laurent.orseau at gmail.com> wrote:
> On Sat, Nov 24, 2012 at 3:11 PM, Nadeem Abdul Hamid <nadeem at acm.org> wrote:
>> On Sat, Nov 24, 2012 at 4:03 AM, Laurent <laurent.orseau at gmail.com> wrote:
>>> If you can, I think it would be a good idea to remove the paren pair if
>>> the user deletes the opening paren he just typed by mistake. Undo should do
>>> the same (which apparently it does not currently; missing
>>> 'begin/end-edit-sequence' ?).
>> Yeah, the undo behavior I've fixed. The first scenario you mention might
>> be tricky - how do you distinguish between typing an open paren and then
>> immediately deleting it vs. typing an open paren, making a bunch of other
>> edits, and then coming back and deleting the open paren?
> I think it would already be good enough to only consider the case  where the
> user types the paren and wants to remove them immediately (e.g., he placed
> them in the wrong place, or wanted square brackets instead, or just changed
> his mind).
> In the case of meanwhile edits, I don't think the user would bother deleting
> the closing paren himself.

I think that hidden state like this can lead to confusing behavior.
Probably you want to have deleting a paren do the same thing,
regardless of what the character most recently typed was.


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