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HISTCONTROL=erasedups is ignored while saving history

From: Alfonsas Stonis
Subject: HISTCONTROL=erasedups is ignored while saving history
Date: Sun, 3 Feb 2013 19:44:05 +1100

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu'
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL
-DHAVE_CONFIG_H   -I.  -I../bash -
I../bash/include -I../bash/lib  -D_FORTIFY_SOURCE=2 -g -O2
-fstack-protector --param=ssp-buffer-size=4 -Wformat
-Werror=format-security -Wall
uname output: Linux laptopas 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24
13:15:40 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 4.2
Patch Level: 37
Release Status: release

    HISTCONTROL=erasedups affects only what is showen by history command,
but does not affect what is saved. Repeated commands are still added to
history file completely ignoring HISTCONTROL.

    Type the same comand few times. For exmple: ls, ls
    Type history and you will see only one ls command
    Exit bash
    Enter bash and type history. You will see repeated ls command.

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