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Merge pull request #6690 from maxim-belkin/harden-brew-2.0

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bin/brew: unset functions that override builtins
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Mike McQuaid 2019-11-05 09:04:59 +00:00 committed by GitHub
commit 37b998d0ef
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1 changed files with 9 additions and 0 deletions
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bin/brew
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@ -19,6 +19,15 @@ symlink_target_directory() {
quiet_cd "$directory" && quiet_cd "$target_dirname" && pwd -P
}
# Enable and use default Bash builtins rather than user-defined functions
builtin enable compgen unset
for cmd in $(builtin compgen -A builtin)
do
builtin unset -f $cmd
builtin enable $cmd
done
unset cmd
BREW_FILE_DIRECTORY="$(quiet_cd "${0%/*}/" && pwd -P)"
HOMEBREW_BREW_FILE="${BREW_FILE_DIRECTORY%/}/${0##*/}"
HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"