Re: . and .. are included where they were excluded before

[gregrwm]

sorry, typo:
and in the more recent versions it's a different inconsistency, . is
excluded from ? ?? but included in @(?|.?)

should be:
and in the more recent versions it's a different inconsistency, . is
excluded from ? .? but included in @(?|.?)

tho as i said that's a tad askew from...


On Mon, Jan 25, 2021 at 3:36 PM gregrwm <rhn-users@greatlakedata.com> wrote:

> Configuration Information [Automatically generated, do not change]:
> Machine: x86_64
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS: -g -O2
> -fdebug-prefix-map=/build/bash-a6qmCk/bash-5.0=. -fstack-protector-strong
> -Wformat -Werror=format-security -Wall -Wno-parentheses -Wno-format-security
> uname output: Linux e540 5.4.0-60-generic #67-Ubuntu SMP Tue Jan 5
> 18:31:36 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
> Machine Type: x86_64-pc-linux-gnu
>
> Bash Version: 5.0
> Patch Level: 17
> Release Status: release
>
> Description:
>         . and .. are excluded from @(?|.?) in
>         bash 4.2.46(2)-release (CentOS 7.8), but are included in
>         bash 4.4.19(1)-release (CentOS 8.2) and
>         bash 5.0.17(1)-release (Ubuntu 20.04/focal).
>
>         is this change in functionality a regression, a "fix", or a new
> feature?
>         is there any option to exclude them?
>
>         in all 3, .. is included in .?
>
>         so oddly in centos7 .. is included in .? but excluded from @(?|.?)
>
>         and in the more recent versions it's a different inconsistency, .
> is excluded from ? ?? but included in @(?|.?)
>
>         but that's a bit askew from what actually interests me.  if i had
> my druthers, there would be an option to set so . and .. would never match
> any (sub)glob other than their literal selves (even with dotglob set).
>
> Repeat-By:
>           $   echo $BASH_VERSION
>         4.2.46(2)-release
>           $   cat /etc/centos-release
>         CentOS Linux release 7.8.2003 (Core)
>           $   echo $BASHOPTS
>
> checkwinsize:cmdhist:dotglob:expand_aliases:extglob:extquote:force_fignore:globstar:histappend:histreedit:histverify:hostcomplete:interactive_comments:nocaseglob:nocasematch:progcomp:promptvars
>           $   touch a .b
>           $   echo ? ??
>         a .b
>           $   echo ? .?         #.. is included
>         a .. .b
>           $   echo @(?|??)
>         a .b
>           $   echo @(?|.?)      #. and .. are excluded
>         a .b
>           $
>
>           $   echo $BASH_VERSION
>         4.4.19(1)-release
>           $   cat /etc/centos-release
>         CentOS Linux release 8.2.2004 (Core)
>           $   echo $BASHOPTS
>
> checkwinsize:cmdhist:complete_fullquote:dotglob:expand_aliases:extglob:extquote:force_fignore:globstar:histappend:histreedit:histverify:hostcomplete:interactive_comments:nocaseglob:nocasematch:progcomp:promptvars
>           $   touch a .b
>           $   echo ? ??
>         a .b
>           $   echo ? .?         #.. is included
>         a .. .b
>           $   echo @(?|??)
>         a .b
>           $   echo @(?|.?)      #. and .. are included
>         . .. a .b
>           $
>
>           $   echo $BASH_VERSION
>         5.0.17(1)-release
>           $   cat /etc/lsb-release
>         DISTRIB_ID=Ubuntu
>         DISTRIB_RELEASE=20.04
>         DISTRIB_CODENAME=focal
>         DISTRIB_DESCRIPTION="Ubuntu 20.04.1 LTS"
>           $   echo $BASHOPTS
>
> checkwinsize:cmdhist:complete_fullquote:dotglob:expand_aliases:extglob:extquote:force_fignore:globasciiranges:globstar:histappend:histreedit:histverify:interactive_comments:login_shell:nocaseglob:nocasematch:progcomp:p
>           $   touch a .b
>           $   echo ? ??
>         a .b
>           $   echo ? .?         #.. is included
>         a .. .b
>           $   echo @(?|??)
>         a .b
>           $   echo @(?|.?)      #. and .. are included
>         . .. a .b
>           $   shopt -u dotglob
>           $   echo ? ??
>         a ??
>           $   echo ? .?         #even with dotglob off .. is still matched
>         a .. .b
>           $   echo @(?|??)
>         a
>           $   echo @(?|.?)      #. is excluded but .. is included
>         .. a .b
>           $
>