Michal Sojka 24491685b4 redo-apenwarr: Fix failure with bash-5.3
The failure manifests as:

    minimal/do: line 358: cd: null directory

In bash 5.3, command "cd ''" fails, while in the previous bash version
it succeeds and no directory is changed. In the fix, we replace empty
"$dodir" with ".".

Context:
- https://github.com/apenwarr/redo/pull/47
- https://cgit.git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-5.3#n119.
- https://lists.gnu.org/archive/html/bug-bash/2025-07/msg00152.html
2025-07-31 00:59:17 +02:00
..