[R] passing ", betrayed by the non-vanishing \

Martin Maechler maechler at stat.math.ethz.ch
Wed Apr 17 08:42:35 CEST 2002

    PD> "graham lawrence" <forporphyry at hotmail.com> writes:

    >>> mtex[3]<-"I need\'s a \"double quote\" with no backslash"
    >>> mtex[3]
    >>> [1] "I need's a \"double quote\" with no backslash"

    >>> so how is it done?  Thanks in advance,

    PD> You's got two of them in there already! Try
    > cat(mtex[3], "\n")

    PD> Printing character strings will always escape double quotes,
    PD> backaslashes and various control characters. No way around that except
    PD> by using cat().

the really amusing thing about this topic: about a dozen mail
hosts from R-help subscribers have bounced the above message,
giving as reason

>>   Diagnostic-Code: SMTP; 553 5.0.0 Unbalanced '"'

Quite a funny example of an error of the 2nd kind when trying to
do spam/virus protection...

Martin Maechler <maechler at stat.math.ethz.ch>	http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO C16	Leonhardstr. 27
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1228			<><
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