%tokens and environment variables are not expanded within Include statements

[Skyb0rg007]

Summary of the new feature / enhancement

OpenSSH supports the use of include statements such as:

# /etc/ssh/ssh_config
Include ssh_config.d/%u/config

This allows administrators to set per-user settings. This feature is not supported by this implementation.

If this is an intentional deviation from the standard, it should be documented as currently the wiki links to the OpenBSD manpage for ssh_config(5) that specifies the expansion behavior.
From that page:

Include
Include the specified configuration file(s). Multiple pathnames may be specified and each pathname may contain glob(7) wildcards, tokens as described in the TOKENS section, environment variables as described in the ENVIRONMENT VARIABLES section and, for user configurations, shell-like ‘~’ references to user home directories.

Proposed technical implementation details (optional)

This function call in the oInclude case should be called. That function call is not present in this project's readconf.c.