On Jun 21, 2012, at 8:58 AM, Matthias Felleisen wrote:

> 
> +a lot; I'd like that

Robby, what's the nastiness threshold for getting something like this into the 
distribution? 

- is it okay to have a menu item with no action?
- is it okay to just say how many arrows--lines, really--radiate from this 
point, or would I need to go to the binding identifier and figure out how many 
uses the thing has?

John

> 
> 
> On Jun 20, 2012, at 10:48 PM, John Clements wrote:
> 
>> When I'm using online check syntax, I often look at the lines leaving an 
>> identifier and wonder: is that just one line, or are there two or three? 
>> When lines overlap, there's no easy way to tell. This can be important in 
>> refactoring decisions, or in debugging (how many uses of this thing are 
>> there to check?).
>> 
>> Let me show you what I mean:
>> 
>> <Screen Shot 2012-06-20 at 7.44.52 PM.png>
>> 
>> How many uses of 'x' are there?
>> 
>> I decided to spend a few minutes digging through the source, and came up 
>> with this *EXTREMELY ROUGH* hack which helps me. :
>> 
>> oiseau:...plt/collects/drracket/private/syncheck clements> git diff gui.rkt
>> diff --git a/collects/drracket/private/syncheck/gui.rkt 
>> b/collects/drracket/private/syncheck/gui.rkt
>> index 5f691bd..e69b9c7 100644
>> --- a/collects/drracket/private/syncheck/gui.rkt
>> +++ b/collects/drracket/private/syncheck/gui.rkt
>> @@ -1069,6 +1069,11 @@ If the namespace does not, they are colored the 
>> unbound color.
>>                                       [var-arrows (filter var-arrow? arrows)]
>>                                       [add-menus (append (map cdr (filter 
>> pair? vec-ents))
>>                                                          (filter procedure? 
>> vec-ents))])
>> +                                 (make-object menu-item%
>> +                                   (string-append ">> " (number->string 
>> (length arrows))
>> +                                                  " arrows from this 
>> identifier")
>> +                                   menu
>> +                                   (λ (item evt) (void)))
>>                                  (unless (null? arrows)
>>                                    (make-object menu-item%
>>                                      (string-constant cs-tack/untack-arrow)
>> 
>> 
>> Let me just emphasize how rough this hack is: when I use it on a use of an 
>> identifier rather than a definition, it just shows the number 1, because 
>> that's the number of arrows--that is, the one that goes back to the 
>> definition.
>> 
>> Keeping its limitations in mind, though, it's really nice to be able to see:
>> 
>> <Screen Shot 2012-06-20 at 7.46.24 PM.png>
>> 
>> 
>> Would others find this useful?
>> 
>> John
>> 
>> 
>> _________________________
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>> http://lists.racket-lang.org/dev
> 

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