+ Rename `array.delete` to `list.erase` to better suit Fish terminology.

+ Extend to support any number of items and/or lists.
+ Add --from option.

plugins/fish-spec/array.delete.fish

-# Remove item from list. List must be the name of a global variable.
-# @params <item> <list>
-function array.delete
-  set -l item $argv[1]
-  if set -l index (contains -i -- $item $$argv[2])
-    set -e $argv[2][$index]
+# NAME
+#   list.erase - erase items from lists
+#
+# SYNOPSIS
+#   <item> [<item>...] [--from] <list>
+#   <item> [<item>...] --from <list1> [<list2>...]
+#
+# DESCRIPTION
+#   Erase any number of items from any number of lists. If more than one
+#   list is specified it must be separated from the items with --from.
+#
+# NOTES
+#   While items are basically any valid sequence of symbols, lists refer
+#   to any global variable or local variable in the scope of the calling
+#   function by name.
+#
+#/
+function -S list.erase
+  # List to erase from is last item by default.
+  set -l items $argv[1..-2]
+  set -l lists $argv[-1]
+  if set -l index (contains -i -- --from $argv)
+    # Everything before --from are items to erase and everything
+    # after, lists to erase any found items from.
+    set items $argv[1..(math $index-1)]
+    set lists $argv[(math $index+1)..-1]
+  end
+  for item in $items
+    for list in $lists
+      if set -l index (contains -i -- $item $$list)
+        set -e $list[1][$index]
+      end
+    end
   end
 end