chsh -s to homebrew bash

[hyperknot]

Output of brew config

HOMEBREW_VERSION: 4.3.23
ORIGIN: https://github.com/Homebrew/brew
HEAD: 42c11a4dedf352229271593de831161071603c66
Last commit: 21 hours ago
Core tap JSON: 17 Sep 23:20 UTC
Core cask tap JSON: 17 Sep 23:20 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: subl_wait
HOMEBREW_MAKE_JOBS: 10
HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: set
Homebrew Ruby: 3.3.4 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.4_1/bin/ruby
CPU: 10-core 64-bit arm_firestorm_icestorm
Clang: 15.0.0 build 1500
Git: 2.40.1 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 14.6.1-arm64
CLT: 15.3.0.0.1.1708646388
Xcode: 15.4
Rosetta 2: false

Output of brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed kegs have no formulae!
This means they were either deleted or installed manually.
You should find replacements for the following formulae:
  mitmproxy

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  [email protected]

Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause formulae that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
  pmix

Description of issue

I'd like to use Homebrew bash (5.x) instead of the macOS built-in one (3.3). Here's what I've done:

1. I ran brew install bash
2. I added /opt/homebrew/bin/bash to /etc/shells
3. I ran chsh -s /opt/homebrew/bin/bash

Yet, when I open a new terminal, this is what it says:

echo $BASH && echo $BASH_VERSION
/opt/homebrew/bin/bash
3.2.57(1)-release

If I manually run bash, this is what it says:

echo $BASH && echo $BASH_VERSION
/opt/homebrew/bin/bash
5.2.32(1)-release

So somehow the $BASH variable is the same, but $BASH_VERSION is the old one when using chsh / opening a new terminal.

[cho-m]

That should have been sufficient. I can't reproduce the behavior you mention.

You may want to check that the terminal application you are using (Terminal.app, iTerm.app, etc.) isn't force overriding the shell.

[hyperknot]

It's beautiful, brew install alacritty is the one which installed the non-3.2 compatible bash completion, as well as the one which is overriding my shell to bash 3.3 somehow.

++++ . /opt/homebrew/etc/bash_completion.d/alacritty
+++++ complete -F _alacritty -o nosort -o bashdefault -o default alacritty
bash: complete: nosort: invalid option name

This works correctly in other terminals.