User config path violates XDG Base Directory Specification (XDG_CONFIG_HOME)

[malikwirin]

Summary

Backlog.md stores per-user configuration under ~/.backlog/user and per-project configuration under .backlog/config.yml (repo-local).
This behavior does not follow the XDG Base Directory Specification, which defines $XDG_CONFIG_HOME (typically ~/.config) as the standard location for user-specific configuration files.

Current behavior

• User config path: ~/.backlog/user.
• Project config path: .backlog/config.yml.

Expected behavior (per spec)

• User config should be stored under $XDG_CONFIG_HOME (fallback to ~/.config) in a tool-specific subdirectory, e.g. $XDG_CONFIG_HOME/backlog/….
• Repo-local configuration under .backlog/config.yml can remain unchanged.

Why this is a problem

• Not respecting the XDG Base Directory Specification makes configuration management inconsistent with established conventions and complicates dotfile management and declarative setups.

Proposed change (backwards compatible)

1. Primary location: $XDG_CONFIG_HOME/backlog/… (or similar).
2. Fallback when XDG_CONFIG_HOME is unset: ~/.config/backlog/….
3. Compatibility: if legacy config exists at ~/.backlog/user, either read it as fallback or migrate (copy/symlink) once; please document precedence clearly.

References

• full sepecification
• wiki.archlinux