[plt-scheme] Replace & Find in v4.1

I have tried it, and I'm afraid it doesn't make much more sense to me.  
The behavior - both with anchors enabled and disabled - seems 
inconsistent: sometimes the Replace commands I want are available, and 
sometimes they aren't.  I am having a very difficult time deducing the 
desired behavior here.

Robby Findler wrote:
> The (perhaps only slightly) more sensical generalization of those
> rules is that when the selection matches the search string, you can
> replace & find (so when the search string is empty and you don't have
> any thing selected, it will replace nothing with the replace string).
>
> Did you try the anchor'd search? Do you find that to be more intuitive?
>
> Robby
>
> On Thu, Aug 14, 2008 at 2:04 PM, Ben Goetter <goetter at mazama.net> wrote:
>   
>> On the same platform, I am observing the same behavior.  Start DrScheme,
>> then type a little searchable gibberish into the Defs and Ints panes, then
>> make the Find and Replace fields appear with Ctrl+f or Ctrl+r.
>>
>> If you have no text in the Find field, the Replace menu items are enabled.
>> Clicking the "Replace and Find" button will then append the contents of the
>> Replace field to the Definitions or Interactions pane, whichever last had
>> focus.
>>
>> Once text goes into the Find field, occurrences of that text will be
>> highlighted in one of the panes, and the Replace items under the Edit menu
>> will be disabled.  Clicking the Replace and Find button then does nothing.
>>
>>
>> Robby Findler wrote:
>>     
>>> Did you put some text into the replace field?
>>>
>>> Robby
>>>
>>> On Thu, Aug 14, 2008 at 11:08 AM, Robert Matovinovic
>>> <robert.matovinovic at web.de> wrote:
>>>
>>>       
>>>> Hi,
>>>> I run DrScheme, version 4.1 [3m] on Windows XP and wonder where to
>>>> activate
>>>> Replace & Find. The button in the search dialog doesn't react and the
>>>> menu
>>>> items in the edit menu are grey. I looked up Preferences ... and Help
>>>> Desk
>>>> but I couldn't find any hint. What am I missing? If it is not a bug the
>>>> switch should be in a more obvious place.
>>>> Robert
>>>>