improve telescope setup doc

README.md

@@ -85,6 +85,8 @@ In order to use [Telescope](https://github.com/nvim-telescope/telescope.nvim) as
 make sure to add `telescope` to your dependencies and paste this following snippet into your configuration.
 
 ```lua
+local actions = require("telescope.actions")
+local action_state = require("telescope.actions.state")
 local harpoon = require('harpoon')
 harpoon:setup({})
 
@@ -103,6 +105,43 @@ local function toggle_telescope(harpoon_files)
         }),
         previewer = conf.file_previewer({}),
         sorter = conf.generic_sorter({}),
+        -- Make telescope select buffer from harpoon list
+        attach_mappings = function(_, map)
+            local function list_find(list, func)
+                for i, v in ipairs(list) do
+                    if func(v, i, list) then
+                        return i, v
+                    end
+                end
+            end
+
+            actions.select_default:replace(function(prompt_bufnr)
+                local curr_picker = action_state.get_current_picker(prompt_bufnr)
+                local curr_entry = action_state.get_selected_entry()
+                if not curr_entry then
+                    return
+                end
+                actions.close(prompt_bufnr)
+
+                local idx, _ = list_find(curr_picker.finder.results, function(v)
+                    if curr_entry.value == v.value then
+                        return true
+                    end
+                    return false
+                end)
+                harpoon:list():select(idx)
+            end)
+            -- Delete entries from harpoon list with <C-d>
+            map({ 'n', 'i' }, '<C-d>', function(prompt_bufnr)
+                local current_picker = action_state.get_current_picker(prompt_bufnr)
+
+                current_picker:delete_selection(function(selection)
+                    harpoon:list():removeAt(selection.index)
+                end)
+            end
+            )
+            return true
+        end
     }):find()
 end