From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jerry Van Baren <gerald.vanbaren@ge.com>
Date: Fri, 23 Oct 2009 07:55:24 -0400
Subject: [U-Boot] blank line repeats last command
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David Collier wrote:

[snip]

> For my money, I'd want to see what I'd repeated, so I'd have been happy
> to have to use up-arrow, enter, rather then just enter.
> 
> But my views don't always prevail.
> 
> D

Command repeating predates the implementation of command line history 
and works even if you don't have command line editing / history enabled.

Also, on commands like memory display, it auto-advances the address so 
that you can hit <return> multiple times to see the next chunk of 
memory.  Command history requires you to edit the address manually to 
get the next chunk.  (FWIIW, I would be happy to see most command 
repeats turned off, but memory display auto-advance is really nice.)

gvb