feat: insert intra-file links without id

Linking to other headlines within the same file doesn't create id links
anymore.

Author: Sebastian Flügge

lua/telescope-orgmode/actions.lua

@@ -65,22 +65,14 @@ function M.refile(closest_headline)
   end
 end
 
-function M.insert(_)
+function M.insert(opts)
   return function(prompt_bufnr)
     actions.close(prompt_bufnr)
 
     ---@type MatchEntry
     local entry = action_state.get_selected_entry()
 
-    local api_object = entry.value.headline
-      and org.get_api_headline(entry.filename, entry.value.headline.line_number)
-      or org.get_api_file(entry.filename)
-    
-    if not api_object then
-      error('Could not find ' .. (entry.value.headline and 'headline' or 'file') .. ' for link')
-    end
-    
-    local destination = api_object:get_link()
+    local destination = org.get_link_destination(entry, opts)
 
     org.insert_link(destination)
     return true

lua/telescope-orgmode/org.lua

@@ -118,4 +118,44 @@ function M.get_api_file(filename)
   return OrgApi.load(filename)
 end
 
+--- Get intra-file link for headline (simple *Headline format)
+---@param entry table
+---@return string
+function M.get_intra_file_link(entry)
+  return '*' .. entry.value.headline.title
+end
+
+--- Get inter-file link using full API format
+---@param entry table
+---@return string
+function M.get_inter_file_link(entry)
+  if entry.value.headline then
+    local api_headline = M.get_api_headline(entry.filename, entry.value.headline.line_number)
+    if api_headline then
+      return api_headline:get_link()
+    end
+    error('Could not find headline for link')
+  else
+    local api_file = M.get_api_file(entry.filename)
+    if api_file then
+      return api_file:get_link()
+    end
+    error('Could not find file for link')
+  end
+end
+
+--- Get link destination (chooses intra-file vs inter-file format)
+---@param entry table
+---@param opts table
+---@return string
+function M.get_link_destination(entry, opts)
+  -- Use intra-file format for headlines in the same file
+  if entry.value.headline and opts.original_file and entry.filename == opts.original_file then
+    return M.get_intra_file_link(entry)
+  end
+  
+  -- Use inter-file format for everything else
+  return M.get_inter_file_link(entry)
+end
+
 return M

lua/telescope-orgmode/picker/insert_link.lua

@@ -20,7 +20,7 @@ return function(opts)
       sorter = conf.generic_sorter(opts),
       previewer = conf.grep_previewer(opts),
       attach_mappings = function(_, map)
-        action_set.select:replace(actions.insert())
+        action_set.select:replace(actions.insert(opts))
         mappings.attach_mappings(map, opts)
         return true
       end,