Increment numbered list on meta return. Fixes #78.

Author: kristijanhusak

lua/orgmode/org/mappings.lua

@@ -233,6 +233,12 @@ function OrgMappings:handle_return(suffix)
     vim.fn.cursor(vim.fn.line('.') + 1, 0)
     return vim.cmd([[startinsert!]])
   end
+  local indent, number_in_list, closer = item:is_numbered_list()
+  if number_in_list then
+    vim.fn.append(vim.fn.line('.'), string.format('%s%d%s ', indent, tonumber(number_in_list) + 1, closer))
+    vim.fn.cursor(vim.fn.line('.') + 1, 0)
+    return vim.cmd([[startinsert!]])
+  end
 end
 
 function OrgMappings:insert_heading_respect_content(suffix)

lua/orgmode/parser/content.lua

@@ -59,6 +59,10 @@ function Content:is_checkbox()
   return self.line:match('^(%s*[%+%-])%s*%[[%sXx%-]?%]')
 end
 
+function Content:is_numbered_list()
+  return self.line:match('^(%s*)(%d+)([%)%.])%s+')
+end
+
 ---@return boolean
 function Content:is_drawer()
   return self.type == Types.DRAWER