Tor Olav Kristensen wrote:
> Invisible wrote:
>> Tor Olav Kristensen wrote:
>>> Invisible wrote:
>>> ...
>>>> Or you have a grid of numbers, and you want to add another column in 
>>>> the middle. Or stuff like that. Since Emacs == Lisp, it seems that 
>>>> you could probably spend 20 minutes writing some code that would do 
>>>> what you want. 
>>> ...
>>>
>>>
http://www.gnu.org/software/emacs/manual/html_node/emacs/Text-Based-Tables.html#Text-Based-Tables

>>
>>
>>
>> Close, but not quite what I was thinking of.
>>
>> I was thinking more like you have some text such as
>>
>>   case x of
>>     5 -> return [(1, 4), (2, 3)]
>>     6 -> return [(1, 5), (2, 4), (3, 3)]
>>     7 -> return [(1, 6), (2, 5), (3, 4)]
>>
>> and you suddenly decide you need to change that to
>>
>>   case x of
>>     5 -> return $ Just [(1, 4), (2, 3)]
>>     6 -> return $ Just [(1, 5), (2, 4), (3, 3)]
>>     7 -> return $ Just [(1, 6), (2, 5), (3, 4)]
>>
>> It's kinda tedious to do this by hand. (Depending on just how many 
>> times you need to do it, obviously...)
> 
> Have a look at this:
> 
> http://www.gnu.org/software/emacs/manual/html_node/emacs/Rectangles.html
> 
> (The text cursor is the "point" and you can put a "mark" in the text 
> with C-space.)

So here's what you could do:

M-g g      // goto-line
2          // 2
C-right    // forward-word
C-right    // forward-word
C-space    // set-mark-command
down       // next-line
down       // next-line
C-x r t    // string-rectangle
  $ Just    //


-- 
Tor Olav
http://subcube.com

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