shell-check-stdin doesn't properly flag shell-check errors

[tomasohara]

The shell-check-stdin doesn't properly flag shell-check errors:

$ shell-check-stdin
Enter snippet lines and then ^D
{
   # pre-init: NOTEBOOK="benchmark_all_models.ipynb"
   notebook="${NOTEBOOK:-notebook.ipynb}"
   base="$(basename $notebook .ipynb)";
   TMP=_temp export-notebook benchmark_all_models.ipynb
   PYTHON="command ipython" IPYTHONDIR=$TMP/ipython run-python-script "_temp/$base.py"
}
^D
In - line 4:
   base="$(basename $notebook .ipynb)";
                    ^-------^ SC2086 (info): Double quote to prevent globbing and word splitting.
Did you mean:
   base="$(basename "$notebook" .ipynb)";

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
shellcheck OK

The error status code is not being recognized:

$ shellcheck _run-benchmark-all-snippet-16aug24.sh

In _run-benchmark-all-snippet-16aug24.sh line 1:
# pre-init: NOTEBOOK="benchmark_all_models.ipynb"
^-- SC2148 (error): Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.


In _run-benchmark-all-snippet-16aug24.sh line 3:
base="$(basename $notebook .ipynb)";
                 ^-------^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean:
base="$(basename "$notebook" .ipynb)";

For more information:
  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
$ echo $?
1