Added (chain) for [CHAIN_METAL_TEXT] armours in library/gui/materials.lua used by the gui/create-item script (#2037)

docs/changelog.txt

@@ -49,6 +49,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 - `EventManager`: now each registered handler for an event can have its own frequency instead of all handlers using the lowest frequency of all handlers
 - `stocks`: allow search terms to match the full item label, even when the label is truncated for length
 - `dfhack-examples-guide`: add mugs to ``basic`` manager orders
+- `gui/create-item`: Added "(chain)" annotation text for armours with the [CHAIN_METAL_TEXT] flag set
 
 ## Documentation
 - Add more examples to the plugin skeleton files so they are more informative for a newbie

library/lua/gui/materials.lua

@@ -314,12 +314,13 @@ function ItemTypeDialog(args)
         if defcnt > 0 then
             for subtype = 0,defcnt-1 do
                 local def = dfhack.items.getSubtypeDef(itype, subtype)
-                local text
+                local success, chain = pcall(function() return def.props.flags.CHAIN_METAL_TEXT end)
+                local text = success and chain and " (chain) " or " "
                 local success, adjective = pcall(function() return def.adjective end)
                 if success and adjective ~= "" then
-                    text = " " .. adjective .. " " .. def.name
+                    text = text .. adjective .. " " .. def.name
                 else
-                    text = " " .. def.name
+                    text = text .. def.name
                 end
                 if not filter or filter(itype,subtype,def) then
                     table.insert(choices, {