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From: amu@MIT.EDU (Aaron M. Ucko)
Cc: ding@gnus.org
Subject: Re: Unintended base64 encoding
Date: 09 Jul 1999 15:43:27 -0400	[thread overview]
Message-ID: <udl1zehbodc.fsf@tux.mit.edu> (raw)
In-Reply-To: Lars Magne Ingebrigtsen's message of "09 Jul 1999 14:04:33 -0400"

Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> Seems nice.  I've now written the function, but what is the switchover
> point between qp and base64?  Math genius wanted!

*raises hand* Ooh, ooh, call on me!

QP adds an overhead of roughly 2 characters per non-ASCII character.
("Roughly" because the line-wrapping stuff makes that number slightly
off.)  On the other hand, base64 always adds an overhead of 1/3
character per character.  The breakeven point occurs when these
overheads are equal; i.e., when about 1/6 of the characters are non-ASCII.

-- 
Aaron M. Ucko, KB1CJC <amu@mit.edu> (finger amu@monk.mit.edu)


  parent reply	other threads:[~1999-07-09 19:43 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-06-11 18:36 X-face display patch Hrvoje Niksic
1999-06-11 18:40 ` Karl Kleinpaste
1999-06-11 18:46   ` Unintended base64 encoding Karl Kleinpaste
1999-06-13  1:17     ` Lars Magne Ingebrigtsen
1999-06-13  2:38       ` Karl Kleinpaste
1999-06-15 11:41       ` Toby Speight
1999-07-03  9:17         ` Lars Magne Ingebrigtsen
1999-07-09 11:55           ` Toby Speight
1999-07-09 18:09             ` Lars Magne Ingebrigtsen
1999-07-09 18:44               ` François Pinard
1999-07-09 19:18                 ` Lars Magne Ingebrigtsen
1999-07-09 19:43               ` Aaron M. Ucko [this message]
1999-07-09 20:01                 ` François Pinard
     [not found]               ` <udl4sjdbodp.fsf@tux.mit.edu>
1999-07-09 20:00                 ` Lars Magne Ingebrigtsen

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