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Re: rot13-other-window too horny

From: Eli Zaretskii
Subject: Re: rot13-other-window too horny
Date: Thu, 21 Jun 2001 16:44:00 +0300

On 21 Jun 2001, Dan Jacobson wrote:

> >> and why, pray tell, when I do
> >> $ emacs file1 file2
> >> ESC x rot13-other-window RET C-x o C-x b RET
> >> one can see that rot13 has also contaminated the Buffer-list and even
> >> the other innocent file of the command line.  Quite clearly beyond the
> >> mere claim that it will just "Display current buffer in rot 13 in
> >> another window."
> Eli> That will teach you to follow the instructions ;-): 
> Eli>    "To terminate the rot13 display, delete that window."
> Eli> See? it says ``to terminate the display'', not ``to terminate the
> Eli> display of that one rot13-messed buffer''.
> Ok, but it also says "Display _current buffer_ in rot 13 in another
> window." but it obviously goes beyond this claim as it even rot13'd my
> mom's holiday greeting card that wasn't in the current buffer.

``Use the source, Luke!''.  The window popped by rot13 arranges for a 
special display _in that window_, for any buffer.  This is explained in 
rot13.el: it simply shows off a powerful feature of the Emacs display 
engine, whereby any character can be displayed as any other character.

> Good thing I wasn't sending a message to Clinton at the time :-)

Nothing bad would have happened: the characters in the buffer are left 
intact, it's just the display that is scrambled.  In other words, if you 
save the messed-up buffer, or send it to Clinton, you won't see any 
traces of rot13 on disk or in the mail queue.

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