initial telescope extension

lua/telescope/_extensions/harpoon.lua

@@ -0,0 +1,11 @@
+local has_telescope, telescope = pcall(require, "telescope")
+
+if not has_telescope then
+    error("harpoon.nvim requires nvim-telescope/telescope.nvim")
+end
+
+return telescope.register_extension({
+    exports = {
+        marks = require("telescope._extensions.marks"),
+    },
+})

lua/telescope/_extensions/marks.lua

@@ -0,0 +1,45 @@
+local finders = require("telescope.finders")
+local make_entry = require("telescope.make_entry")
+local pickers = require("telescope.pickers")
+local previewers = require("telescope.previewers")
+local sorters = require("telescope.sorters")
+local harpoon = require("harpoon")
+local entry_display = require("telescope.pickers.entry_display")
+
+return function(opts)
+    opts = opts or {}
+
+    pickers.new(opts, {
+        prompt_title = "harpoon marks",
+        finder = finders.new_table({
+            results = harpoon.get_mark_config().marks,
+            entry_maker = function(mark)
+                local displayer = entry_display.create({
+                    separator = " - ",
+                    items = {
+                        { width = 2 },
+                        { width = 50 },
+                        { remaining = true },
+                    },
+                })
+                local make_display = function(entry)
+                    return displayer({
+                        tostring(entry.index),
+                        mark.filename,
+                    })
+                end
+                local line = mark.filename .. ":" .. mark.row .. ":" .. mark.col
+                return {
+                    value = mark,
+                    ordinal = line,
+                    display = make_display,
+                    lnum = mark.row,
+                    col = mark.col,
+                    filename = mark.filename,
+                }
+            end,
+        }),
+        sorter = sorters.get_fuzzy_file(),
+        previewer = previewers.vim_buffer_cat.new({}),
+    }):find()
+end