From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <73afeaa26bd3f166bde71fb190f73ea3@plan9.bell-labs.com>
From: Dennis Ritchie <dmr@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] sam command language
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Date: Thu,  9 Oct 2003 20:26:08 -0400
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 > My first experience of Unix (circa 1976) was on an uppercase-only
 > terminal.  The driver would display lowercase characters as
 > uppercase, and uppercase characters escaped with a backslash;
 >keyboard input was the inverse of this.  So it was a common
 >mistake to type something like this in a C program
 > 	PRINTF("\HELLO, WORLD\N"):
 > which would result in "Hello, worldN" and no newline.

 > Exercise for the reader: how many backslashes are required
 > in the ed 's' command to correct the error?

Years ago I ran into a situation with a script
(probably involving all of the shell, ed, and troff)
in which N=C2=BD \ were needed.  N was too few, N+1 were
too many.

	Dennis