Respect $XDG_CONFIG_HOME/pdb/.pdbrc path for PDB config discovery

[makukha]

Proposal:

Enabling $XDG_CONFIG_HOME/pdb/.pdbrc would let users keep their $HOMEs organized.

The order of discovery and execution of .pdbrc files would be:

• $XDG_CONFIG_HOME/pdb/.pdbrc
• ~/.pdbrc
• ./.pdbrc

1. The choice of /pdb/ subdirectory under $XDG_CONFIG_HOME is questionable.
2. Additional support of $XDG_CONFIG_DIRS is questionable.

I could provide PR if this feature sounds reasonable.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-133307: Add new Pdb config location $XDG_CONFIG_HOME/pdb/.pdbrc #133733

[makukha]

For those who might be interested in this feature, please read

• gh-133307: Add new Pdb config location $XDG_CONFIG_HOME/pdb/.pdbrc #133733 (PR)
• Why not use $XDG_CONFIG_HOME/pdb/.pdbrc? (d.p.o.)