feat: holed ui lists even with bonus whitespace

lua/harpoon/buffer.lua

@@ -89,9 +89,7 @@ function M.get_contents(bufnr)
     local indices = {}
 
     for _, line in pairs(lines) do
-        if not utils.is_white_space(line) then
-            table.insert(indices, line)
-        end
+        table.insert(indices, line)
     end
 
     return indices

lua/harpoon/list.lua

@@ -1,4 +1,5 @@
 local Logger = require("harpoon.logger")
+local utils = require("harpoon.utils")
 local Extensions = require("harpoon.extensions")
 
 local function guess_length(arr)
@@ -252,7 +253,7 @@ function HarpoonList:resolve_displayed(displayed, length)
     for i = 1, length do
         local v = displayed[i]
         local index = index_of(list_displayed, self._length, v)
-        if v == "" then
+        if utils.is_white_space(v) then
             new_list[i] = nil
         elseif index == -1 then
             new_list[i] = self.config.create_list_item(self.config, v)

lua/harpoon/test/ui_spec.lua

@@ -81,6 +81,35 @@ describe("harpoon", function()
         eq(created_files, list:display())
     end)
 
+    it("ui with replace_at", function()
+        local one_f = os.tmpname()
+        local one = utils.create_file(one_f, { "one", })
+        local three_f = os.tmpname()
+        local three = utils.create_file(three_f, { "three", })
+        local context = { row = 1, col = 0 }
+
+        eq(0, harpoon:list():length())
+        vim.api.nvim_set_current_buf(three)
+
+        harpoon:list():replace_at(3)
+        eq(3, harpoon:list():length())
+
+        vim.api.nvim_set_current_buf(one)
+        harpoon:list():replace_at(1)
+        eq(3, harpoon:list():length())
+
+        harpoon.ui:toggle_quick_menu(harpoon:list())
+
+        key("<CR>")
+
+        eq(3, harpoon:list():length())
+        eq({
+            { value = one_f, context = context },
+            nil,
+            { value = three_f, context = context },
+        }, harpoon:list().items)
+    end)
+
     it("using :q to leave harpoon should quit everything", function()
         harpoon.ui:toggle_quick_menu(harpoon:list())
 

lua/harpoon/ui.lua

@@ -160,14 +160,19 @@ function HarpoonUI:toggle_quick_menu(list, opts)
     })
 end
 
+function HarpoonUI:_get_processed_ui_contents()
+    local list = Buffer.get_contents(self.bufnr)
+    local length = #list
+    return list, length
+end
+
 ---@param options? any
 function HarpoonUI:select_menu_item(options)
     local idx = vim.fn.line(".")
 
     -- must first save any updates potentially made to the list before
     -- navigating
-    local list = Buffer.get_contents(self.bufnr)
-    local length = #list
+    local list, length = self:_get_processed_ui_contents()
     self.active_list:resolve_displayed(list, length)
 
     Logger:log(
@@ -185,13 +190,7 @@ function HarpoonUI:select_menu_item(options)
 end
 
 function HarpoonUI:save()
-    local list = Buffer.get_contents(self.bufnr)
-    local length = #list
-    for i, v in ipairs(list) do
-        if v == "" then
-            list[i] = nil
-        end
-    end
+    local list, length = self:_get_processed_ui_contents()
 
     Logger:log("ui#save", list)
     self.active_list:resolve_displayed(list, length)