From: Charles Lindsey (chl@clw.cs.man.ac.uk)
Date: Fri Dec 29 2000 - 12:28:49 CST
In <ylzohgff35.fsf@windlord.stanford.edu> Russ Allbery <rra@stanford.edu> writes:
>J B Moreno <planb@newsreaders.com> writes:
>> Posters SHOULD avoid using control characters in US-ASCII (or other
>> CCSs) except for tab (ASCII 9), formfeed (ASCII 12), and backspace
>> (ASCII 8). Tab signifies sufficient horizontal white space to reach
>> the next of a set of fixed positions; posters are warned that there
>> is no standard set of positions, so tabs should be avoided if precise
>> spacing is essential. Formfeed (which is sometimes referred to as the
>> "spoiler character") signifies a point at which a reading agent
>> SHOULD pause and await reader interaction before displaying further
>> text. Reading agents MUST NOT pass other control characters or escape
>> sequences unaltered to the output device.
>I assume that the intention of saying "in US-ASCII" is to make it clear
>that other characters can be used when the character set is something else
>(in other words, MIME trumps all this)? ESC is a valid character in some
>Asian encodings and should be passed unaltered to the output device in
>some circumstances.
Actually, that wasn't my interpretation.
I think it is saying you should not use control character in ANY character
set (apart from the exceptions mentioned). Which is why it says "or other
CCSs".
-- Charles H. Lindsey ---------At Home, doing my own thing------------------------ Email: chl@clw.cs.man.ac.uk Web: http://www.cs.man.ac.uk/~chl Voice/Fax: +44 161 436 6131 Snail: 5 Clerewood Ave, CHEADLE, SK8 3JU, U.K. PGP: 2C15F1A9 Fingerprint: 73 6D C2 51 93 A0 01 E7 65 E8 64 7E 14 A4 AB A5