SSH config files compilation from multiple files

ssh-compile

# Include this snippet in your .zshrc or .bashrc file to compile multiple ssh config files into one.
# Put the file anywhere and source it from your .zshrc or .bashrc file with : source /path/to/ssh-compile
# This can be useful if you share a config file among several people like in your company and also some private hosts.

# call ssh-compile-config to get all the files matching ~/.ssh/.config* and combine them into the final ~/.ssh/config file
alias ssh-compile-config='echo -n > ~/.ssh/.config && cat ~/.ssh/config* > ~/.ssh/.config'
ssh-compile-config

# fetch all the configured hosts
h=()
if [[ -r ~/.ssh/.config ]]; then
  ssh-compile-config
  h=($h ${${${(@M)${(f)"$(cat ~/.ssh/.config)"}:#Host *}#Host }:#*[*?]*})
fi

# use all your configured hosts for ssh, slogin, scp, or rsync commands
if [[ $#h -gt 0 ]]; then
  zstyle ':completion:*:ssh:*' hosts $h
  zstyle ':completion:*:slogin:*' hosts $h
  zstyle ':completion:*:scp:*' hosts $h
  zstyle ':completion:*:rsync:*' hosts $h
fi