From petr.pikal at precheza.cz  Wed Aug 16 12:49:35 2017
From: petr.pikal at precheza.cz (PIKAL Petr)
Date: Wed, 16 Aug 2017 10:49:35 +0000
Subject: [Rd] strange behaviour read.table and clipboard
In-Reply-To: <22932.6089.568293.479188@stat.math.ethz.ch>
References: <6E8D8DFDE5FA5D4ABCB8508389D1BF88FFAAAB50@SRVEXCHCM301.precheza.cz>
 <da145467-18b0-bc61-e3b1-6f18281d88ac@gmail.com>
 <6E8D8DFDE5FA5D4ABCB8508389D1BF88FFAAABF0@SRVEXCHCM301.precheza.cz>
 <22931.63258.575157.518757@stat.math.ethz.ch>
 <6E8D8DFDE5FA5D4ABCB8508389D1BF88FFAAAC5E@SRVEXCHCM301.precheza.cz>
 <22932.6089.568293.479188@stat.math.ethz.ch>
Message-ID: <6E8D8DFDE5FA5D4ABCB8508389D1BF88FFAAAD23@SRVEXCHCM301.precheza.cz>

Hi

> -----Original Message-----
> From: Martin Maechler [mailto:maechler at stat.math.ethz.ch]
> Sent: Wednesday, August 16, 2017 12:01 PM
> To: PIKAL Petr <petr.pikal at precheza.cz>
> Cc: Martin Maechler <maechler at stat.math.ethz.ch>; Duncan Murdoch
> <murdoch.duncan at gmail.com>
> Subject: RE: [Rd] strange behaviour read.table and clipboard
>
> (not to R-devel)
>
> More questions, please answer to R-devel:
>
> - Does it show the problem only with such a long column?
> [- if yes, is really 2846 the minimal number which shows the problem? ]
>
There is certain minimal number of rows/items after which this feature/bug appears.

For 2 columns it appears after 525 rows in case of whole numbers, but in case fractional numbers it appears after 235 rows.

> - Can you make a minimally small *.xls file available on the
>   web, so that other R Windows users can try?

https://drive.google.com/open?id=0B-hUB8Dm7X_VaWhtdDFoaVMxWWc

Cheers
Petr

>
> - In addition to  diff(which(ll == "a1"))
>
>      table(ll)
>
>   maybe a bit more revealing
>
>   ((and 'll' was a bad variable name I've chosen;
>        'l' ("ell") is too easily confused with '1' ("one")))
>
> Thank you, Petr,
> Martin
>
>
> >>>>> PIKAL Petr <petr.pikal at precheza.cz>
> >>>>>     on Wed, 16 Aug 2017 08:37:22 +0000 writes:
>
>     > Hi recent version, and the problem is also in most recent
>     > version (r73093 - tested on different PC)
>
>     >> version
>     >                _ platform i386-w64-mingw32 arch i386 os
>     > mingw32 system i386, mingw32 status Under development
>     > (unstable) major 3 minor 5.0 year 2017 month 07 day 31 svn
>     > rev 73003 language R version.string R Under development
>     > (unstable) (2017-07-31 r73003) nickname Unsuffered
>     > Consequences
>     >>
>
>     >> str(ll <- readLines("clipboard"))
>     >  chr [1:2846] "a1" "1" "1" "1" "1" "1" "1" "1" "1" "1" "1"
>     > "1" "1" "1" "1" ...  Warning message: In
>     > readLines("clipboard") : incomplete final line found on
>     > 'clipboard'
>     >> diff(which(ll=="a1"))
>     > [1] 1365 1365
>     >>
>
>     >>
>
>     >> str(ll <- readLines("clipboard"))
>     >  chr [1:2846] "a1" "1" "1" "1" "1" "1" "1" "1" "1" "1" ...
>     >> diff(which(ll=="a1"))
>     > [1] 1365 1365
>
>     >
> ================================================================
>
>     > version 11.01.2017
>     >> version
>     >                _ platform x86_64-w64-mingw32 arch x86_64
>     > os mingw32 system x86_64, mingw32 status Under development
>     > (unstable) major 3 minor 4.0 year 2017 month 01 day 11 svn
>     > rev 71964 language R version.string R Under development
>     > (unstable) (2017-01-11 r71964) nickname Unsuffered
>     > Consequences
>     >> str(ll <- readLines("clipboard"))
>     >  chr "str(ll <- readLines(\"clipboard\"))"
>     >> str(ll <- readLines("clipboard"))
>     >  chr [1:2846] "a1" "1" "1" "1" "1" "1" "1" "1" "1" "1" "1"
>     > "1" "1" "1" "1" ...
>     >> diff(which(ll=="a1"))
>     > integer(0)
>     >>
>
>     > So it works for R-devel version from the beginning of this
>     > year.
>
>     > Cheers Petr
>
>
>
>     >> -----Original Message----- From: Martin Maechler
>     >> [mailto:maechler at stat.math.ethz.ch] Sent: Wednesday,
>     >> August 16, 2017 9:41 AM To: PIKAL Petr
>     >> <petr.pikal at precheza.cz> Cc: Duncan Murdoch
>     >> <murdoch.duncan at gmail.com>; r-devel at r-project.org
>     >> Subject: Re: [Rd] strange behaviour read.table and
>     >> clipboard
>     >>
>     >> >>>>> PIKAL Petr <petr.pikal at precheza.cz> >>>>> on Wed,
>     >> 16 Aug 2017 06:25:48 +0000 writes:
>     >>
>     >> > Hi Duncan The simples spreadsheet is:
>     >>
>     >> > Put a name in the cell, let say "a1" Put number e.g. 1
>     >> > below "a1" Copy the number to enough rows Select this >
>     >> column and press ctrl-c
>     >>
>     >> > result is
>     >>
>     >> >> temp<- read.delim("clipboard") str(temp) >
>     >> 'data.frame': 1513 obs. of 1 variable: $ a1: Factor w/ 2
>     >> > levels "1","a1": 1 1 1 1 1 1 1 1 1 1 ...  >>
>     >> which(temp$a1=="a1") > [1] 1365
>     >> >>
>     >>
>     >> To make this much easier to diagnose, use something like
>     >>
>     >> str(ll <- readLines("clipboard"))
>     >>
>     >> and do this both in R 3.4.1 (or R 3.4.1 patched) and
>     >> R-devel.  (very easy if you use Emacs ESS also on Windows
>     >> and have several versions of R installed)
>     >>
>     >> I just did that and both versions of R behaved
>     >> identically, i.e., returned the same 'll'
>     >>
>     >> (I've tried with different versions of Copy regions from
>     >> excel; my version of Windows (2008 Server R2, fully
>     >> uptodate with updates) is very different than yours;
>     >> Office is said to be Office 2013).
>     >>
>     >> Martin
>     >>
>     >>
>     >>
>     >>
>     >> > I tested it in vanilla R
>     >>
>     >> >> sessionInfo() > R Under development (unstable)
>     >> (2017-07-31 r73003) > Platform: x86_64-w64-mingw32/x64
>     >> (64-bit) Running under: > Windows 10 x64 (build 14393)
>     >>
>     >> > Matrix products: default
>     >>
>     >> > locale: [1] LC_COLLATE=Czech_Czech Republic.1250 >
>     >> LC_CTYPE=Czech_Czech Republic.1250 [3] >
>     >> LC_MONETARY=Czech_Czech Republic.1250 LC_NUMERIC=C [5] >
>     >> LC_TIME=Czech_Czech Republic.1250
>     >>
>     >> > attached base packages: [1] stats graphics grDevices
>     >> utils > datasets methods base
>     >>
>     >> > loaded via a namespace (and not attached): [1] >
>     >> compiler_3.5.0
>     >> >>
>     >>
>     >> > Excel 16 or 15 I am not sure.
>     >>
>     >> > R-devel 2015 (69443) works as expected so it started a
>     >> > believe around May or June this year, when I installed
>     >> new > R version.
>     >>
>     >> > I hope it could help to trace the problem. If I can
>     >> help > any further, let me know.
>     >>
>     >> > Best regards Petr
>     >>
>     >>
>     >>
>     >> >> -----Original Message----- From: Duncan Murdoch >>
>     >> [mailto:murdoch.duncan at gmail.com] Sent: Wednesday, August
>     >> >> 16, 2017 12:35 AM To: PIKAL Petr >>
>     >> <petr.pikal at precheza.cz>; r-devel at r-project.org Subject:
>     >> >> Re: [Rd] strange behaviour read.table and clipboard
>     >> >>
>     >> >> On 15/08/2017 10:03 AM, PIKAL Petr wrote: > Dear all
>     >> >> >
>     >> >> > I used to transfer data from excel to R by simple >>
>     >> ctrl-c and read.delim("clipboard") construction. I know
>     >> >> it is a bad practice but it is easy and for quick >>
>     >> exploratory work it is OK. However after changing to new
>     >> >> R devel few days ago I encountered weird behaviour. I
>     >> >> tried one or two columns.
>     >> >>
>     >> >> You haven't posted something that is reproducible.  I
>     >> >> don't have Excel, but I can cut and paste from >>
>     >> Libreoffice, and I don't see this.  However, it's not the
>     >> >> same spreadsheet as you used, so I wouldn't be >>
>     >> comfortable saying I did what you did.
>     >> >>
>     >> >> Please reduce the size of your spreadsheet if you can,
>     >> >> and then post instructions for how to construct it,
>     >> and >> what to cut and paste from it.  Then others can
>     >> try what >> you did and see if this is specific to your
>     >> machine, to >> that particular version of R-devel, to
>     >> Excel, etc.
>     >> >>
>     >> >> Duncan Murdoch
>     >> >>
>     >> >>
>     >> >> > In case of 2 columns, header is repeated after 526
>     >> >> items >> mar<-read.delim("clipboard") >> >>
>     >> which(mar$a2=="a1") > [1] 525 1051 1577 >> >>
>     >> diff(which(mar$a2=="a1")) > [1] 526 526 > and only first
>     >> >> header item is repeated.
>     >> >> >
>     >> >> > In case of one column, header is repeated after 1107
>     >> >> items
>     >> >> >
>     >> >> >> mar<-read.delim("clipboard") >> >>
>     >> diff(which(mar$a2=="a2")) > [1] 1107 1107
>     >> >> >
>     >> >> > And all items in object are therefore changed to >>
>     >> factor.
>     >> >> >
>     >> >> > BTW, readxl package works on same excel file
>     >> smoothly.
>     >> >> >
>     >> >> > I will try to download the most recent R version to
>     >> >> check it, but it could take some time due to our IT >>
>     >> issues.
>     >> >> >
>     >> >> > Best regards > Petr
>     >> >> >
>     >> >> >> version > _ > platform x86_64-w64-mingw32 > arch >>
>     >> x86_64 > os mingw32 > system x86_64, mingw32 > status >>
>     >> Under development (unstable) > major 3 > minor 5.0 > year
>     >> >> 2017 > month 07 > day 31 > svn rev 73003 > language R
>     >> > >> version.string R Under development (unstable)
>     >> (2017-07-31 >> r73003) > nickname Unsuffered Consequences
>     >> >> >
>     >> >> >
>     >> >> > ________________________________ > Tento e-mail a >>
>     >> jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou
>     >> >> ur?eny pouze jeho adres?t?m.  > Jestli?e jste
>     >> obdr?el(a) >> tento e-mail omylem, informujte laskav?
>     >> neprodlen? jeho >> odes?latele. Obsah tohoto emailu i s
>     >> p??lohami a jeho >> kopie vyma?te ze sv?ho syst?mu.  >
>     >> Nejste-li zam??len?m >> adres?tem tohoto emailu, nejste
>     >> opr?vn?ni tento email >> jakkoliv u??vat, roz?i?ovat,
>     >> kop?rovat ?i zve?ej?ovat.  > >> Odes?latel e-mailu
>     >> neodpov?d? za eventu?ln? ?kodu >> zp?sobenou modifikacemi
>     >> ?i zpo?d?n?m p?enosu e-mailu.
>     >> >> >
>     >> >> > V p??pad?, ?e je tento e-mail sou??st? obchodn?ho >>
>     >> jedn?n?: > - vyhrazuje si odes?latel pr?vo ukon?it >>
>     >> kdykoliv jedn?n? o uzav?en? smlouvy, a to z jak?hokoliv
>     >> >> d?vodu i bez uveden? d?vodu.  > - a obsahuje-li
>     >> nab?dku, >> je adres?t opr?vn?n nab?dku bezodkladn?
>     >> p?ijmout; >> Odes?latel tohoto e-mailu (nab?dky) vylu?uje
>     >> p?ijet? >> nab?dky ze strany p??jemce s dodatkem ?i
>     >> odchylkou.  > - >> trv? odes?latel na tom, ?e p??slu?n?
>     >> smlouva je uzav?ena >> teprve v?slovn?m dosa?en?m shody
>     >> na v?ech jej?ch >> n?le?itostech.  > - odes?latel tohoto
>     >> emailu informuje, >> ?e nen? opr?vn?n uzav?rat za
>     >> spole?nost ??dn? smlouvy s >> v?jimkou p??pad?, kdy k
>     >> tomu byl p?semn? zmocn?n nebo >> p?semn? pov??en a takov?
>     >> pov??en? nebo pln? moc byly >> adres?tovi tohoto emailu
>     >> p??padn? osob?, kterou adres?t >> zastupuje, p?edlo?eny
>     >> nebo jejich existence je adres?tovi >> ?i osob? j?m
>     >> zastoupen? zn?m?.
>     >> >> >
>     >> >> > This e-mail and any documents attached to it may be
>     >> >> confidential and are intended only for its intended >>
>     >> recipients.  > If you received this e-mail by mistake, >>
>     >> please immediately inform its sender.  Delete the >>
>     >> contents of this e-mail with all attachments and its >>
>     >> copies from your system.  > If you are not the intended
>     >> >> recipient of this e-mail, you are not authorized to
>     >> use, >> disseminate, copy or disclose this e-mail in any
>     >> manner.  >> > The sender of this e-mail shall not be
>     >> liable for any >> possible damage caused by modifications
>     >> of the e-mail or >> by delay with transfer of the email.
>     >> >> >
>     >> >> > In case that this e-mail forms part of business >>
>     >> dealings: > - the sender reserves the right to end >>
>     >> negotiations about entering into a contract in any time,
>     >> >> for any reason, and without stating any reasoning.  >
>     >> - >> if the e-mail contains an offer, the recipient is >>
>     >> entitled to immediately accept such offer; The sender of
>     >> >> this e-mail (offer) excludes any acceptance of the
>     >> offer >> on the part of the recipient containing any
>     >> amendment or >> variation.  > - the sender insists on
>     >> that the respective >> contract is concluded only upon an
>     >> express mutual >> agreement on all its aspects.  > - the
>     >> sender of this >> e-mail informs that he/she is not
>     >> authorized to enter >> into any contracts on behalf of
>     >> the company except for >> cases in which he/she is
>     >> expressly authorized to do so in >> writing, and such
>     >> authorization or power of attorney is >> submitted to the
>     >> recipient or the person represented by >> the recipient,
>     >> or the existence of such authorization is >> known to the
>     >> recipient of the person represented by the >> recipient.
>     >> > >> ______________________________________________ > >>
>     >> R-devel at r-project.org mailing list > >>
>     >> https://stat.ethz.ch/mailman/listinfo/r-devel
>     >> >> >
>     >>
>     >>
>     >> > ________________________________ Tento e-mail a
>     >> jak?koliv > k n?mu p?ipojen? dokumenty jsou d?v?rn? a
>     >> jsou ur?eny > pouze jeho adres?t?m.  Jestli?e jste
>     >> obdr?el(a) tento > e-mail omylem, informujte laskav?
>     >> neprodlen? jeho > odes?latele. Obsah tohoto emailu i s
>     >> p??lohami a jeho > kopie vyma?te ze sv?ho syst?mu.
>     >> Nejste-li zam??len?m > adres?tem tohoto emailu, nejste
>     >> opr?vn?ni tento email > jakkoliv u??vat, roz?i?ovat,
>     >> kop?rovat ?i zve?ej?ovat.  > Odes?latel e-mailu
>     >> neodpov?d? za eventu?ln? ?kodu > zp?sobenou modifikacemi
>     >> ?i zpo?d?n?m p?enosu e-mailu.
>     >>
>     >> > V p??pad?, ?e je tento e-mail sou??st? obchodn?ho
>     >> jedn?n?: > - vyhrazuje si odes?latel pr?vo ukon?it
>     >> kdykoliv jedn?n? o > uzav?en? smlouvy, a to z jak?hokoliv
>     >> d?vodu i bez uveden? > d?vodu.  - a obsahuje-li nab?dku,
>     >> je adres?t opr?vn?n > nab?dku bezodkladn? p?ijmout;
>     >> Odes?latel tohoto e-mailu > (nab?dky) vylu?uje p?ijet?
>     >> nab?dky ze strany p??jemce s > dodatkem ?i odchylkou.  -
>     >> trv? odes?latel na tom, ?e > p??slu?n? smlouva je
>     >> uzav?ena teprve v?slovn?m dosa?en?m > shody na v?ech
>     >> jej?ch n?le?itostech.  - odes?latel tohoto > emailu
>     >> informuje, ?e nen? opr?vn?n uzav?rat za spole?nost >
>     >> ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn?
>     >> > zmocn?n nebo p?semn? pov??en a takov? pov??en? nebo
>     >> pln? > moc byly adres?tovi tohoto emailu p??padn? osob?,
>     >> kterou > adres?t zastupuje, p?edlo?eny nebo jejich
>     >> existence je > adres?tovi ?i osob? j?m zastoupen? zn?m?.
>     >>
>     >> > This e-mail and any documents attached to it may be >
>     >> confidential and are intended only for its intended >
>     >> recipients.  If you received this e-mail by mistake, >
>     >> please immediately inform its sender. Delete the contents
>     >> > of this e-mail with all attachments and its copies from
>     >> > your system.  If you are not the intended recipient of
>     >> > this e-mail, you are not authorized to use,
>     >> disseminate, > copy or disclose this e-mail in any
>     >> manner.  The sender of > this e-mail shall not be liable
>     >> for any possible damage > caused by modifications of the
>     >> e-mail or by delay with > transfer of the email.
>     >>
>     >> > In case that this e-mail forms part of business
>     >> dealings: > - the sender reserves the right to end
>     >> negotiations about > entering into a contract in any
>     >> time, for any reason, and > without stating any
>     >> reasoning.  - if the e-mail contains > an offer, the
>     >> recipient is entitled to immediately accept > such offer;
>     >> The sender of this e-mail (offer) excludes any >
>     >> acceptance of the offer on the part of the recipient >
>     >> containing any amendment or variation.  - the sender >
>     >> insists on that the respective contract is concluded only
>     >> > upon an express mutual agreement on all its aspects.  -
>     >> > the sender of this e-mail informs that he/she is not >
>     >> authorized to enter into any contracts on behalf of the >
>     >> company except for cases in which he/she is expressly >
>     >> authorized to do so in writing, and such authorization or
>     >> > power of attorney is submitted to the recipient or the
>     >> > person represented by the recipient, or the existence
>     >> of > such authorization is known to the recipient of the
>     >> person > represented by the recipient.  >
>     >> ______________________________________________ >
>     >> R-devel at r-project.org mailing list >
>     >> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>     > ________________________________ Tento e-mail a jak?koliv
>     > k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny
>     > pouze jeho adres?t?m.  Jestli?e jste obdr?el(a) tento
>     > e-mail omylem, informujte laskav? neprodlen? jeho
>     > odes?latele. Obsah tohoto emailu i s p??lohami a jeho
>     > kopie vyma?te ze sv?ho syst?mu.  Nejste-li zam??len?m
>     > adres?tem tohoto emailu, nejste opr?vn?ni tento email
>     > jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
>     > Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu
>     > zp?sobenou modifikacemi ?i zpo?d?n?m p?enosu e-mailu.
>
>     > V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
>     > - vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o
>     > uzav?en? smlouvy, a to z jak?hokoliv d?vodu i bez uveden?
>     > d?vodu.  - a obsahuje-li nab?dku, je adres?t opr?vn?n
>     > nab?dku bezodkladn? p?ijmout; Odes?latel tohoto e-mailu
>     > (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce s
>     > dodatkem ?i odchylkou.  - trv? odes?latel na tom, ?e
>     > p??slu?n? smlouva je uzav?ena teprve v?slovn?m dosa?en?m
>     > shody na v?ech jej?ch n?le?itostech.  - odes?latel tohoto
>     > emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost
>     > ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn?
>     > zmocn?n nebo p?semn? pov??en a takov? pov??en? nebo pln?
>     > moc byly adres?tovi tohoto emailu p??padn? osob?, kterou
>     > adres?t zastupuje, p?edlo?eny nebo jejich existence je
>     > adres?tovi ?i osob? j?m zastoupen? zn?m?.
>
>     > This e-mail and any documents attached to it may be
>     > confidential and are intended only for its intended
>     > recipients.  If you received this e-mail by mistake,
>     > please immediately inform its sender. Delete the contents
>     > of this e-mail with all attachments and its copies from
>     > your system.  If you are not the intended recipient of
>     > this e-mail, you are not authorized to use, disseminate,
>     > copy or disclose this e-mail in any manner.  The sender of
>     > this e-mail shall not be liable for any possible damage
>     > caused by modifications of the e-mail or by delay with
>     > transfer of the email.
>
>     > In case that this e-mail forms part of business dealings:
>     > - the sender reserves the right to end negotiations about
>     > entering into a contract in any time, for any reason, and
>     > without stating any reasoning.  - if the e-mail contains
>     > an offer, the recipient is entitled to immediately accept
>     > such offer; The sender of this e-mail (offer) excludes any
>     > acceptance of the offer on the part of the recipient
>     > containing any amendment or variation.  - the sender
>     > insists on that the respective contract is concluded only
>     > upon an express mutual agreement on all its aspects.  -
>     > the sender of this e-mail informs that he/she is not
>     > authorized to enter into any contracts on behalf of the
>     > company except for cases in which he/she is expressly
>     > authorized to do so in writing, and such authorization or
>     > power of attorney is submitted to the recipient or the
>     > person represented by the recipient, or the existence of
>     > such authorization is known to the recipient of the person
>     > represented by the recipient.

________________________________
Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m.
Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav? neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho syst?mu.
Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat.
Odes?latel e-mailu neodpov?d? za eventu?ln? ?kodu zp?sobenou modifikacemi ?i zpo?d?n?m p?enosu e-mailu.

V p??pad?, ?e je tento e-mail sou??st? obchodn?ho jedn?n?:
- vyhrazuje si odes?latel pr?vo ukon?it kdykoliv jedn?n? o uzav?en? smlouvy, a to z jak?hokoliv d?vodu i bez uveden? d?vodu.
- a obsahuje-li nab?dku, je adres?t opr?vn?n nab?dku bezodkladn? p?ijmout; Odes?latel tohoto e-mailu (nab?dky) vylu?uje p?ijet? nab?dky ze strany p??jemce s dodatkem ?i odchylkou.
- trv? odes?latel na tom, ?e p??slu?n? smlouva je uzav?ena teprve v?slovn?m dosa?en?m shody na v?ech jej?ch n?le?itostech.
- odes?latel tohoto emailu informuje, ?e nen? opr?vn?n uzav?rat za spole?nost ??dn? smlouvy s v?jimkou p??pad?, kdy k tomu byl p?semn? zmocn?n nebo p?semn? pov??en a takov? pov??en? nebo pln? moc byly adres?tovi tohoto emailu p??padn? osob?, kterou adres?t zastupuje, p?edlo?eny nebo jejich existence je adres?tovi ?i osob? j?m zastoupen? zn?m?.

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[Rd] strange behaviour read.table and clipboard
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