refactor: use _comp_compgen_help with post-filter

Author: akinomyoga

completions/badblocks

@@ -17,7 +17,9 @@ _comp_cmd_badblocks()
 
     if [[ $cur == -* ]]; then
         # Filter out -w (dangerous) and -X (internal use)
-        COMPREPLY=($(compgen -X '-[wX]' -W '$(_parse_usage "$1")' -- "$cur"))
+        _comp_compgen -R usage
+        ((${#COMPREPLY[@]})) &&
+            _comp_compgen -- -X '-[wX]' -W '"${COMPREPLY[@]}"'
         return
     fi
 

completions/dnssec-keygen

@@ -37,8 +37,10 @@ _comp_cmd_dnssec_keygen()
     esac
 
     if [[ $cur == -* ]]; then
-        COMPREPLY=($(compgen -W '$(_parse_help "$1" | \
-            command sed -e "s/:\$//")' -- "$cur"))
+        _comp_compgen -R help
+        ((${#COMPREPLY[@]})) &&
+            _comp_compgen -- -W '$(printf "%s\n" "${COMPREPLY[@]}" |
+                command sed -e "s/:\$//")'
         return
     fi
 } &&

completions/links

@@ -80,8 +80,10 @@ _comp_cmd_links()
     esac
 
     if [[ $cur == -* ]]; then
-        COMPREPLY=($(compgen -W '$(_parse_help "$1" |
-            command grep -vF -- "->")' -- "$cur"))
+        _comp_compgen -R help
+        ((${#COMPREPLY[@]})) &&
+            _comp_compgen -- -W '$(printf "%s\n" "${COMPREPLY[@]}" |
+                command grep -vF -- "->")'
         return
     fi
 

completions/zopfli

@@ -12,8 +12,10 @@ _comp_cmd_zopfli()
     esac
 
     if [[ $cur == -* ]]; then
-        COMPREPLY=($(compgen -W \
-            '$(_parse_help "$1" -h | command sed -e "s/#$//")' -- "$cur"))
+        _comp_compgen -R help -- -h
+        ((${#COMPREPLY[@]})) &&
+            _comp_compgen -- -W '$(printf "%s\n" "${COMPREPLY[@]}" |
+                command sed -e "s/#$//")' -- "$cur"
         [[ ${COMPREPLY-} == --i ]] && compopt -o nospace
         return
     fi