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Re: Negative or zero arguments to yank-last-arg in bound keystrokes


From: DennisW
Subject: Re: Negative or zero arguments to yank-last-arg in bound keystrokes
Date: Sun, 28 Nov 2010 11:38:25 -0800 (PST)
User-agent: G2/1.0

On Nov 8, 5:26 pm, Dennis Williamson <address@hidden>
wrote:
> Configuration Information [Automatically generated, do not change]:
> Machine: i686
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i686'
> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i686-pc-linux-gnu'
> -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/local/share/locale'
> -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include
> -I./lib   -g -O2
> uname output: Linux hostname 2.6.31-21-generic #59-Ubuntu SMP Wed Mar
> 24 07:28:56 UTC 2010 i686 GNU/Linux
> Machine Type: i686-pc-linux-gnu
>
> Bash Version: 4.1
> Patch Level: 9
> Release Status: release
>
> Description:
>
> Negative or zero arguments to yank-last-arg in bound keystrokes do not perform
> as expected when the keystroke is pressed repeatedly.
>
> Comparing to yank-last-arg with no arguments or positive arguments which step
> backwards successively through history entries, when the argument is zero or
> negative, repeated keypresses only alternate between the two previous history
> entries.
>
> Also present in:
>
> GNU bash, version 4.1.0(1)-release (i686-pc-linux-gnu)
> GNU bash, version 4.0.33(1)-release (i486-pc-linux-gnu)
> GNU bash, version 3.2.51(24)-release (i686-pc-cygwin)
>
> Repeat-By:
>
> Create these keystroke bindings using whatever keystrokes you like. The demo
> below will use Alt-h, Alt-i, Alt-j, Alt-k and Alt-m:
>
>   bind '"\eh": "\e1\e."'
>   bind '"\ei": "\e0\e."'
>   bind '"\ej": "\e-\e."'
>   bind '"\ek": "\e-1\e."'
>   bind '"\em": "\e-2\e."'
>
> Enter four example commands for testing. It doesn't matter what they are as
> long as they are different commands and have a few arguments that differ so
> it's easy to see the demonstration.
>
>   printf '%s\n' foo bar
>   echo aaa bbb ccc
>   ls -ld . ..
>   getent passwd root sys
>
> Press Alt-h four times, you should correctly get "passwd", "-ld", "aaa"
> and "'%s\n'" in succession. Clear the line (Ctrl-u).
>
> Alt-. also correctly gives "sys", "..", "ccc" and "bar". (Ctrl-u to clear)
>
> Now try the same thing with each of the other keystrokes, clearing the line
> between each test.
>
> Alt-i: Instead of "getent", "ls", "echo" and "printf" you will see "getent",
> "getent", "ls" and "getent". Subsequent repetitions will alternate between
> "ls" and "getent".
>
> Alt-j: Instead of "root", ".", "bbb" and "foo" you will see "root",
> "root", "." and "root". Subsequent repetitions will alternate between
> "." and "root".
>
> Alt-k: Same behavior as Alt-j.
>
> Alt-m: Instead of "passwd", "-ld", "aaa" and "'%s\n'" you will see "passwd",
> "passwd", "-ld" and "passwd". Subsequent repetitions will alternate between
> "-ld" and "passwd".
>
> Other negative arguments behave similarly.

If there was a response to this bug report I missed it. Was there one?


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