R strange behaviour when building huge concatenation

eval(parse(text=scan("clipboard", what="")))

head(p1x)

tail(p1x)

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of angeloimm
Sent: Tuesday, November 27, 2012 9:04 AM
To: r-help at r-project.org
Subject: Re: [R] R strange behaviour when building huge concatenation

Hello John
It seems correct to me too but in my R console it seems to not be
working
Here there is what I did:
i copied the statement on one row (leaving and removing the final
useless
semi colomn)
i tried to execute it in the R console (in order to open my R console I
simply opened a terminal window on my ubuntu machine and I typed "R")
when I click "enter" the inserted statement doesn't not run...I simply
see
the cursor on a new line and this new line starts with "+"

Here there is a little stack of what I see on my terminal:
, 1, 1, 2, 2, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 17, 2, 2,
0,
2, 0, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 1, 0,
0,
1, 0, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 7, 0, 0, 1, 0, 0, 3, 0, 0, 2,
4,
0, 1, 0, 0, 0, 0, 2, 1, 0, 4, 2, 0, 0, 1, 3, 0, 0, 1, 0, 0, 1, 0, 1, 1,
0,
0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 1, 0, 1, 1, 3, 3, 0, 0, 0, 0, 1, 0, 2,
0,
1, 0, 0, 0, 1, 1, 0, 2, 0, 2, 0, 3, 0, 4, 0, 1, 1, 0, 0, 1, 0, 3, 0, 0,
0,
1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 3, 0, 6, 0, 0, 0, 0, 3, 0, 0, 0, 2, 5,
0,
1, 0, 0, 1, 0, 1, 0, 0, 2, 0, 1, 2, 0, 0, 7, 0, 0, 2, 0, 2, 2, 0, 0, 0,
0,
0, 2, 0, 8, 0, 0, 5, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 3, 0, 2, 0, 0, 0, 2,
1,
0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 2, 0, 0, 1, 0, 1, 2, 0, 0, 1, 0, 2, 0,
0,
3, 0, 0, 0, 1, 0, 0, 0, 1, 0, 9, 3, 0, 0, 0, 0, 0, 0, 3, 0, 0, 2, 0, 1,
1,
1, 0, 0, 0, 2, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0,
0,
1, 4, 0, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 0,
0,
6, 0, 0, 0, 0, 1, 0, 0, 2, 6, 0, 1, 0, 0, 0, 0, 2, 0, 7, 0, 1, 2, 1, 1,
1,
0, 0, 1, 5, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 5, 1,
0,
1, 2, 0, 0, 1, 2, 0, 1, 0, 2, 0, 1, 2, 7, 1, 2, 0, 0, 0, 5, 0, 4, 0))
+
+
+
+
+

Each time i click enter i go on a new line starting with "+"
Then if i start in tying some character I get an error like this:

+
+
+ q
+
+ q
Errore: unexpected symbol in:
"
q"

Sometimes this error (Errore: unexpected symbol in:) appears in the
statement execution

Here there are my sessionInfo() result:

sessionInfo()

R version 2.14.1 (2011-12-22)
Platform: i686-pc-linux-gnu (32-bit)

locale:
 [1] LC_CTYPE=it_IT.UTF-8       LC_NUMERIC=C
 [3] LC_TIME=it_IT.UTF-8        LC_COLLATE=it_IT.UTF-8
 [5] LC_MONETARY=it_IT.UTF-8    LC_MESSAGES=it_IT.UTF-8
 [7] LC_PAPER=C                 LC_NAME=C
 [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=it_IT.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base


I really don't know why this happens....above all because it seems to
me a
very very simple statement...
Thank to all you for the support




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