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Re: info missing in output of declare -a in 4.4.x


From: Dennis Williamson
Subject: Re: info missing in output of declare -a in 4.4.x
Date: Sun, 17 Feb 2019 18:58:09 -0600

On Sun, Feb 17, 2019, 6:01 PM L A Walsh <address@hidden wrote:

>
>
> On 2/17/2019 2:19 PM, Dennis Williamson wrote:
> >
> >     So it really is a bug of some sort, not that I use BASH ALIASES
> >     for anything.  Was going to, but ...  and you're right, lots of
> >     things aren't showing there.
> >
> >
> >
> >
> > Have you tried starting Bash without any startup files, creating an
> > alias and then checking the array?
> yes.  Just now.
> out of 14 vars starting with BASH
> only BASHOPTS is different in the clean startup.
> In a 'normal'[?] startup, there are 3 extra vars starting with BASH_:
>
> BASH_COMPLETION_COMPAT_DIR
> BASH_ENV (I set this, but unset it for this test)
> BASH_REMATCH
>
> then bash (type -p says /bin/bash)
>  --noprofile --norc
>
> Version would be same, and the debug related would be blank, but
> hmmm....
> declare -A BASH_CMDS=()  (command hashing?)
>
> most of the BASH vars show no value (exception of
> version-related, BASH=/bin/bash & "BASHOPTS", but they
> DO have a value.  If I print it in the shell instead
> of using declare -p I see stuff.
>
>
>
>
>
>
>
>


Oh, interesting! In Bash 4 and 5, I just did declare -p with no args and it
showed BASH_ALIASES empty. But with declare -p BASH_ALIASES it shows the
contents (as does the alias command).

Other arrays that show this difference for me:

BASH_CMDS
DIRSTACK
GROUPS

Scalars that exhibit this issue:

BASHPID
BASH_COMMAND
BASH_SUBSHELL
COMP_WORDBREAKS
HISTCMD
LINENO
RANDOM
SECONDS


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