Brew log output no longer accepts format arguments

[espoelstra]

• [ x ] are reporting a bug others will be able to reproduce and not asking a question. If you're not sure or want to ask a question do so on our Discourse: https://discourse.brew.sh
• [ x ] ran a brew command and reproduced the problem with multiple formulae? If it's a problem with a single, official formula (not cask) please file this issue at Homebrew/homebrew-core: https://github.com/Homebrew/homebrew-core/issues/new/choose. If it's a brew cask problem please file this issue at https://github.com/Homebrew/homebrew-cask/issues/new/choose. If it's a tap (e.g. Homebrew/homebrew-php) problem please file this issue at the tap.
• [ x ] ran brew update and can still reproduce the problem?
• [ x ] ran brew doctor, fixed all issues and can still reproduce the problem?
• [ x ] ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

Trying to look up previous versions of Bash formula to install Bash 4 instead of Bash 5. This SO answer has the syntax I was trying to use. https://stackoverflow.com/a/53766019/3794873

What happened (include command output)

When attempting to use a git log formatting argument that used to work on brew log, it stated that the arguments were invalid.

Command output

brew log --format=format:%H\ %s -F --grep=4.4.23 bash
Usage: brew log [options] formula
Show the git log for the given formula.
-p, -u, --patch                  Also output patch from commit.
    --stat                       Also output diffstat from commit.
    --oneline                    Output only one line per commit.
-1, --max-count=1                Output only one commit.
-h, --help                       Show this message.

Error: invalid option: --format=format:%H %s

What you expected to happen

Expected brew log to pass the command to git log as it used to for advanced search capabilities.

Step-by-step reproduction instructions (by running brew commands)

brew log --format=format:%H\ %s -F --grep=4.4.23 bash

Goal would be to use this filtered output to install a specific previous version without having to create a custom tap first.

BREW_VERSION_SHA=$(brew log --format=format:%H\ %s -F --grep=4.4.23 bash | head -1 | awk '{print $2}')
BREW_FORMULA_NAME=bash
brew info $BREW_FORMULA_NAME \
| sed -n \
    -e '/^From: /s///' \
    -e 's/github.com/raw.githubusercontent.com/' \
    -e 's%blob/%%' \
    -e "s/master/$BREW_VERSION_SHA/p" \
| xargs brew install

Alternative method of achieving the same goal appears to be:

brew tap-new username/repo-name
# extract with a version seems to run a grep under the hood
brew extract --version='4.4.23' bash username/repo-name
brew install bash@4.4.23
# Note this "fails" when trying to grab a bottle for the package and seems to have some odd doubling of the version in that output, but this isn't fatal.

[MikeMcQuaid]

Goal would be to use this filtered output to install a specific previous version

Sorry, this is not a use-case we wish to support. brew extract is the supported flow for this.

For brew log specifically: you could use git -C $(brew --repo homebrew/core) log --format ....