static bool Hack_Ignore_F_Inscription = false;    // only for "why can't I fire" feedback

            && (Hack_Ignore_F_Inscription || strstr(item.inscription.c_str(), "=f") == 0)

// Search all items in pack for a fire_item_okay item.
// If check_quiver, quiver item is checked first.
// Then, check all items in the loop determined by start and forward

        unwind_var<int> festart(Options.fire_items_start, 0);
        if ((item = get_fire_item_index()) == ENDOFPACK)

        // Tell the user why we might have skipped their missile
        unwind_var<int> unwind_festart(Options.fire_items_start, 0);
        unwind_var<bool> unwind_inscription(Hack_Ignore_F_Inscription, true);
        const int skipped_item = get_fire_item_index();
        if (skipped_item == ENDOFPACK)
        {

        else

        }
        else if (skipped_item < unwind_festart.original_value())
        {

                 index_to_letter(festart.original_value()),
                 index_to_letter(item));

                 index_to_letter(unwind_festart.original_value()),
                 index_to_letter(skipped_item));
        }
        else
        {
            mprf("No suitable missiles (ignoring '=f'-inscribed item on '%c').",
                 index_to_letter(skipped_item));
        }

        you.quiver_change = true;

            {

                you.quiver_change = true;       // might have added/removed !F 
            }

            "<w>C</w>.      Abilities and Stats\n"

            "<w>C</w>.      Attributes and Stats\n"

            "<w>5</w>.      List of Enchantments\n",

            "<w>5</w>.      List of Enchantments\n"
            "<w>6</w>.      Inscriptions\n",

adds a note in curly braces to the item inscription. Several 
inscriptions are functional, namely all containing one of the following
 @w9    -- now typing 'w9' will wield this item
 @*9    -- now any action command followed by '9' will use this item
 !w     -- before wielding this item, Crawl will ask for confirmation
 !*     -- any action with this item causes a prompt

adds a note in curly braces to the item inscription.  Inscriptions
that contain one or more of the following have functional effects:
 @w9    -- Typing 'w9' will wield this item.  Any single digit will
           work, and the item may contain more than one shortcut.
           This also works with commands besides 'w'.
 @*9    -- Any action command followed by '9' will use this item.
 !w     -- Wielding this item causes a prompt for confirmation.
           This also works with commands besides 'w'.
 !*     -- Using this item with any command causes a prompt.

 =g     -- item will be picked up automatically if autopickup is on
 =k     -- item will be ignored in all listings on the ground
           (it can still be picked up if it's the only item on the 
           ground)

 =g     -- Item will be picked up automatically if autopickup is on.
 =k     -- Item will be ignored in all listings on the ground.
           It can still be picked up if it's the only item on the 
           ground.
 =f     -- Item will be ignored by the firing prompt and quiver.
           It can still be fired/thrown using 't'.

In the example, 'w' could be any sensible command and '9' could be any 
digit. An item may contain more than one shortcut.