Torsten Bögershausen [off-list ref] writes:
Could we use the same logic as in t9903:
...
. ./lib-bash.sh
Please no. The test itself is not about something that checks how
we behave under bash (which is what 9903 wants to see). The use of
construct that is portable in t5801 is a pure and simple bug, and it
should not be hard to fix it.
If there still is such an unportable construct left, that is.