R help - Aug 2009 - Last expression entered by user

Hi,

I am looking for a way to find out the last expression that was  
entered by the user, similar to ".Last.value", but for the unevaluated
expression instead of the evaluated one.

Example:
> x <- 4
> x*x + 3
[1] 19
> .Last.value # that's the evaluated last expression
[1] 19
# but I am looking for the unevaluated expression (".Last.expression",
so to say), which would be expression(x * x + 3) in this case

Daniel

Try this:
> x <- 4
> x*x+3
[1] 19
> savehistory(".Rhistory")
> c(parse(text = tail(readLines(".Rhistory"), 2)[1]))
expression(x * x + 3)


On Sun, Aug 2, 2009 at 5:02 AM, Daniel Haase<dh at haase-zm.de>
wrote:
> Hi,
>
> I am looking for a way to find out the last expression that was entered by
> the user, similar to ".Last.value", but for the unevaluated
expression
> instead of the evaluated one.
>
> Example:
>>
>> x <- 4
>> x*x + 3
>
> [1] 19
>>
>> .Last.value # that's the evaluated last expression
>
> [1] 19
> # but I am looking for the unevaluated expression
(".Last.expression", so to
> say), which would be expression(x * x + 3) in this case
>
> Daniel
>
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