track down and fix alias expansion issues in functions

[tomasohara]

A two-part bug report and followup check.

1. Some functions defined using aliases are note being expanded properly (e.g., the new fgr-py-etc). The aliases have to be reloaded for them to be OK:

$ fgr-py-etc fubar
-bash: fgr-py: command not found
-bash: fgr-jupyter: command not found


$ show-macros fgr-py-etc
fgr-py-etc ()
{
    fgr-py "$@";
    fgr-jupyter "$@"
}

$ all-tomohara-aliases

$ show-macros fgr-py-etc
fgr-py-etc ()
{
    fgr-ext py "$@";
    fgr-ext ipynb "$@"
}

$ fgr-py-etc fubar
./tests/test_simple_batspp.py:42:## FUBAR = system.getenv_bool("FUBAR", False,
./tests/test_simple_batspp.py:45:FUBAR_TEST = r"""

2. A check should be done to see which macros are affected. A workaround is to use simple-alias-fn instead of alias.