refactor(openssl): prefix "-" to the generated items

Author: akinomyoga

completions/openssl

@@ -32,9 +32,9 @@ _comp_cmd_openssl__compgen_digests()
         "$1" dgst -h 2>&1 |
             _comp_awk '/^-.*[ \t]to use the .* message digest algorithm/ { print $1 }'
     )"
-    _comp_compgen -ac "${cur#-}" split -P "-" -- "$("$1" help 2>&1 |
+    _comp_compgen_split -- "$("$1" help 2>&1 |
         command sed -ne '/^Message Digest commands/,/^[[:space:]]*$/p' |
-        command sed -e 1d)"
+        command sed -e '1d;s/^/-/')"
 }
 
 _comp_cmd_openssl()