feat(complete:bash): setup subcommands option complete

dotbare.plugin.bash

@@ -3,9 +3,12 @@ mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 _dotbare_completions()
 {
-  local IFS=$'\n' subcommands
+  local IFS=$'\n' subcommands cur prev options
+  cur="${COMP_WORDS[$COMP_CWORD]}"
+  prev="${COMP_WORDS[$COMP_CWORD-1]}"
+
   if [[ "$COMP_CWORD" -eq "1" ]]; then
-    subcommands="$(./dotbare -h \
+    subcommands="$(${mydir}/dotbare -h \
       | awk '{
           if ($0 ~ /^  f.*/) {
             gsub(/^  /, "", $0)
@@ -14,10 +17,34 @@ _dotbare_completions()
           }
         }')"
 
-    COMPREPLY=($(compgen -W "${subcommands}" -- "${COMP_WORDS[1]}"))
-    if [[ ${#COMPREPLY[*]} -eq 1 ]]; then
-      COMPREPLY=( ${COMPREPLY[0]%% *} )
+    if [[ $cur == -* ]]; then
+      COMPREPLY+=($(compgen -W "-h" -- "${COMP_WORDS[1]}"))
+    else
+      COMPREPLY=($(compgen -W "${subcommands}" -- "${COMP_WORDS[1]}"))
     fi
+
+  elif [[ "$COMP_CWORD" -eq "2" && "${prev}" != '-h' ]]; then
+    case "${prev}" in
+      fbackup)
+        ;;
+      finit)
+        ;;
+      *)
+        options="$(${mydir}/dotbare ${prev} -h \
+          | awk '{
+              if ($0 ~ /  -*/) {
+                gsub(/^  /, "", $0)
+                gsub(/\t/, "  ", $0)
+                print $0
+              }
+            }')"
+        COMPREPLY=($(compgen -W "${options}" -- "${COMP_WORDS[2]}"))
+        ;;
+    esac
+  fi
+
+  if [[ ${#COMPREPLY[*]} -eq 1 ]]; then
+    COMPREPLY=( "${COMPREPLY[0]%% *}" )
   fi
 }