Bash as shell?

[lslvr]

All tools use a POSIX compliant shell (/bin/sh) as the command interpreter. The POSIX standard lacks a very useful bash feature: set -o pipefail. That makes a pipe fail if any of its commands fail. OTOH, the POSIX standard states that the pipe's exit code shall be that of the rightmost command. This seems inconsistent if any of the other commands [in the pipeline] fail.

[lslvr]

The following may be a bash bug:

set -eo pipefail
shopt -s inherit_errexit

echo $(false)
echo "I'm a bug."

When bash executes this code, it prints I'm a bug.. This makes bash useless for solving this issue.