Generalize __fish_dunstctl_history to __fish_dunstctl_info

This can be re-used to retrieve other pairs of information (e.g. history
id message could be helpful as well).

Author: zappolowski

contrib/dunstctl.fishcomp

@@ -1,10 +1,10 @@
 if command -q jq
-    function __fish_dunstctl_history
-        dunstctl history | jq -r '.data[][] | "\(.id.data)\t\(.appname.data)"'
+    function __fish_dunstctl_info
+        dunstctl $argv[1] | jq -r ".data[][] | \"\(.$argv[2].data)\t\(.$argv[3].data)\""
     end
 else
-    function __fish_dunstctl_history
-        dunstctl history | awk '/"id" :/ {getline; getline; print $3}'
+    function __fish_dunstctl_info
+        dunstctl $argv[1] | awk -vpattern="\"$argv[2]\" :" '$0 ~ pattern {getline; getline; gsub("\"", "", $3); print $3}'
     end
 end
 
@@ -27,7 +27,7 @@ complete -c dunstctl -f -n __fish_use_subcommand -a help -d 'Show this help'
 # command specific arguments
 complete -c dunstctl -x -n '__fish_seen_subcommand_from action close close-all context history history-clear is-paused debug help'
 complete -c dunstctl -x -n '__fish_seen_subcommand_from count' -a 'displayed history waiting'
-complete -c dunstctl -x -n '__fish_seen_subcommand_from history-pop history-rm' -a '(__fish_dunstctl_history)'
+complete -c dunstctl -x -n '__fish_seen_subcommand_from history-pop history-rm' -a '(__fish_dunstctl_info history id appname)'
 complete -c dunstctl -x -n '__fish_seen_subcommand_from set-paused' -a 'true false toggle'
 
 # TODO: add completion for rule when there is a proper way to get configured rules