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../. -I.././include -I.././lib -D_FORTIFY_SOURCE=2 -g
-O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall
uname output: Linux zig-home 3.16.0-28-generic #38-Ubuntu SMP Fri Dec 12
17:37:40 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu
Bash Version: 4.3
Patch Level: 30
Release Status: release
Description:
Inside command substition, an exclamation character will always try
execute a command from history. Quoting has an unexpected result.
Repeat-By:
echo "$( echo '!' )"
bash: !': event not found
echo "$( echo "!" )"
bash: !': event not found
echo "$( echo ! )"
!
echo "$( echo "\!" )"
\!
echo "!"
!
