[Rd] [R] go back a block of code in history

[Peng Yu]

2009/12/2 Uwe Ligges <ligges at statistik.tu-dortmund.de>:
>
>
> Peng Yu wrote:
>>
>> Suppose I run the following code in the R session. At the last prompt
>> '>', I want to retrieve the second command (staring with 'y'). But I
>> have to type up arrow many times, which is very inconvenient. I'm
>> wondering if there is a way to configure R to skip block of code in
>> the history?
>
> I don't think so, but since you are writing your code in an editor
> (hopefully), it is probably easier to submit the relevant part of the code
> from the editor to R again.

It would be more convenient if there is a way to roll back a block of
code in the history. Could the development team add this feature to
the to-do list?

>>> x=list(a=c(1,2),b=c(3,4,5))
>>> y=list(a=c(1,2),b=c(3,4,5))
>>> lapply(seq(along=x)
>>
>> +     ,function(i){
>> +       cbind(
>> +           x[[i]]
>> +           ,y[[i]]
>> +           )
>> +     }
>> +     )
>> [[1]]
>>     [,1] [,2]
>> [1,]    1    1
>> [2,]    2    2
>>
>> [[2]]
>>     [,1] [,2]
>> [1,]    3    3
>> [2,]    4    4
>> [3,]    5    5
>>
>>
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>