No bash completion (or missing instructions) on Mac (Big Sur)

[berndverst]

Describe the bug A clean Homebrew install of Azure CLI used to include instructions for modifying .bash_profile or .zshrc to enable bash completion. This no longer appears to be the case.

To Reproduce Install Homebrew brew install zsh brew install azure-cli

No information provided on how to enable auto completions.

Expected behavior

Include helper command like az completion zsh that can be added, or provide instructions for how to properly enable completions.

After much digging I have determined this should be the following for ZSH:

autoload bashcompinit && bashcompinit
source $(brew --prefix)/etc/bash_completion.d/az

Note that brew --prefix most likely corresponds to /opt/homebrew

Environment summary

Mac OS 11.2.3. -- M1 Mac (ARM64) zsh 5.8 (arm-apple-darwin20.2.0)

brew --version
Homebrew 3.1.3
Homebrew/homebrew-core (git revision 7beae5ab57; last commit 2021-04-22)
Homebrew/homebrew-cask (git revision d0318692c3; last commit 2021-04-22)

az --version
azure-cli                         2.22.1

core                              2.22.1
telemetry                          1.0.6

Extensions:
azure-cli-ml                      1.25.0
subscription                       0.1.4
account                            0.2.1

Python location '/opt/homebrew/Cellar/azure-cli/2.22.1/libexec/bin/python'
Extensions directory '/Users/bverst/.azure/cliextensions'

Python (Darwin) 3.8.9 (default, Apr  2 2021, 17:46:14)
[Clang 12.0.0 (clang-1200.0.32.29)]

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[yungezz]

add @fengzhou-msft to help

[danvy]

I have the same issue trying to install az CLI 2.31.0 on Big Sur