How do I get bash to respect my physical directory structure? (And likewise for Emacs?)

How do I get bash to respect my physical directory structure? (And likewise for Emacs?)

"If in bash, I do ""set -P"" then bash follows the ""physical directory
structure"" when doing ""pwd"" and ""cd .."" etc, rather than the ""logical
one"" that might be defined via symlinks. Unfortunately, bash still
doesn't obey the physical directory structure for filename completion.
How can I get bash to respect my authority on this issue?"