feat: add support for ssh completion using files in .ssh/config.d too

completions/ssh.completion.sh

@@ -7,21 +7,44 @@ function _omb_completion_ssh {
   local cur
   _omb_completion_reassemble_breaks :
 
+  local -a options
   if [[ $cur == *@*  ]] ; then
-    local -a options=(-P "${cur%%@*}@" -- "${cur#*@}")
+    options=(-P "${cur%%@*}@" -- "${cur#*@}")
   else
-    local -a options=(-- "$cur")
+    options=(-- "$cur")
   fi
 
+  local IFS=$'\n'
+
   # parse all defined hosts from .ssh/config
-  if [[ -r $HOME/.ssh/config ]]; then
-    COMPREPLY=($(compgen -W "$(grep ^Host "$HOME/.ssh/config" | awk '{for (i=2; i<=NF; i++) print $i}' )" "${options[@]}"))
+  if [[ -r ~/.ssh/config ]]; then
+    local -a config_files=(~/.ssh/config)
+
+    # check if .ssh/config contains Include options
+    local -a include_patterns
+    _omb_util_split include_patterns "$(awk -F' ' '/^Include/{print $2}' ~/.ssh/config 2>/dev/null)" $'\n'
+    local i
+    for i in "${!include_patterns[@]}"; do
+      # relative or absolute path, if relative transforms to absolute
+      [[ ${include_patterns[i]} == /* ]] || include_patterns[i]=~/.ssh/${include_patterns[i]}
+    done
+
+    # interpret possible globbing
+    local -a include_files
+    _omb_util_glob_expand include_files '${include_patterns[*]}'
+    local include_file
+    for include_file in "${include_files[@]}";do
+      # parse all defined hosts from that file
+      [[ -s $include_file ]] && config_files+=("$include_file")
+    done
+
+    COMPREPLY+=($(compgen -W "$(awk '/^Host/ {for (i=2; i<=NF; i++) print $i}' "${config_files[@]}")" "${options[@]}"))
   fi
 
   # parse all hosts found in .ssh/known_hosts
-  if [[ -r $HOME/.ssh/known_hosts ]]; then
-    if grep -v -q -e '^ ssh-rsa' "$HOME/.ssh/known_hosts" ; then
-      COMPREPLY+=($(compgen -W "$( awk '{print $1}' "$HOME/.ssh/known_hosts" | grep -v ^\| | cut -d, -f 1 | sed -e 's/\[//g' | sed -e 's/\]//g' | cut -d: -f1 | grep -v ssh-rsa)" "${options[@]}"))
+  if [[ -r ~/.ssh/known_hosts ]]; then
+    if grep -v -q -e '^ ssh-rsa' ~/.ssh/known_hosts; then
+      COMPREPLY+=($(compgen -W "$( awk '{print $1}' ~/.ssh/known_hosts | grep -v ^\| | cut -d, -f 1 | sed -e 's/\[//g' | sed -e 's/\]//g' | cut -d: -f1 | grep -v ssh-rsa)" "${options[@]}"))
     fi
   fi
 

lib/utils.sh

@@ -366,6 +366,13 @@ function _omb_util_add_prompt_command {
 }
 
 ## @fn _omb_util_split array str [sep]
+##   Split STR with SEP in a safe way and store the result in ARRAY.
+##   @param[out] array
+##     The name of an array variable to which the split result is stored.
+##   @param[in] str
+##     The string to split
+##   @param[in,opt]
+##     The set of separator characters.  The default is ' <tab><newline>'.
 function _omb_util_split {
   local __set=$- IFS=${3:-$' \t\n'}
   set -f
@@ -374,6 +381,13 @@ function _omb_util_split {
   return 0
 }
 
+## @fn _omb_util_glob_expand array glob
+##   Perform the pathname expansion of a glob pattern GLOB in a safe way and
+##   store the filenames in ARRAY.
+##   @param[out] array
+##     The name of an array variable to which the filenames are stored.
+##   @param[in] glob
+##     The glob pattern that is attempted to match filenames
 function _omb_util_glob_expand {
   local __set=$- __shopt __gignore=$GLOBIGNORE
   _omb_util_get_shopt failglob nullglob extglob
@@ -400,14 +414,6 @@ function _omb_util_glob_expand {
   return 0
 }
 
-function _omb_util_split {
-  local __set=$- IFS=${3:-$' \t\n'}
-  set -f
-  eval -- "$1=(\$2)"
-  [[ $__set == *f* ]] || set +f
-  return 0
-}
-
 function _omb_util_alias {
   case ${OMB_DEFAULT_ALIASES:-enable} in
   (disable) return 0 ;;