throw the unedited gas pump code at this

I'll need to figure out how to merge the iexamine functions of this and the previous iexamine of the full biogas digester

src/iexamine.cpp

@@ -3104,6 +3104,43 @@ void iexamine::digester_full( Character &, const tripoint &examp )
     add_msg( _( "The process has finished, yielding %d methane." ), result.charges );
 }
 
+// This is all stolen from the gas pumps. I have no idea what I am doing.
+void iexamine::gaspump( Character &you, const tripoint &examp )
+{
+    map &here = get_map();
+    if( !query_yn( _( "Use the %s?" ), here.tername( examp ) ) ) {
+        none( you, examp );
+        return;
+    }
+
+    map_stack items = here.i_at( examp );
+    for( auto item_it = items.begin(); item_it != items.end(); ++item_it ) {
+        if( item_it->made_of( phase_id::GAS ) ) {
+            /// @note \EFFECT_DEX decreases chance of spilling gas from a pump
+            if( one_in( 10 + you.get_dex() ) ) {
+                add_msg( m_bad, _( "You accidentally spill the %s." ), item_it->type_name() );
+                static const auto max_spill_volume = units::from_liter( 1 );
+                const int max_spill_charges = std::max( 1, item_it->charges_per_volume( max_spill_volume ) );
+                /// @note \EFFECT_DEX decreases amount of gas spilled, if gas is spilled from pump
+                const int qty = rng( 1, max_spill_charges * 8.0 / std::max( 1, you.get_dex() ) );
+
+                item spill = item_it->split( qty );
+                if( spill.is_null() ) {
+                    here.add_item_or_charges( you.pos(), *item_it );
+                    items.erase( item_it );
+                } else {
+                    here.add_item_or_charges( you.pos(), spill );
+                }
+
+            } else {
+                liquid_handler::handle_liquid_from_ground( item_it, examp, 1 );
+            }
+            return;
+        }
+    }
+    add_msg( m_info, _( "Out of order." ) );
+}
+
 //arc furnance start
 void iexamine::arcfurnace_empty( Character &you, const tripoint &examp )
 {