feat(fzf-lua): replace oldfiles with unified MRU recent_files

plugins/fzf-lua.lua

@@ -3,13 +3,88 @@ local fzf = require("fzf-lua")
 local wide = {
     width = 160,
     height = 30,
-    preview = { horizontal = "right:50%" },
+    preview = {
+        horizontal = "right:50%",
+    },
 }
 
+local function valid_file(file)
+    local stat = vim.uv.fs_stat(file)
+    return stat ~= nil
+        and not fzf.utils.path_is_directory(file, stat)
+        -- FIFO blocks `fs_open` indefinitely (#908)
+        and not fzf.utils.file_is_fifo(file, stat)
+        and fzf.utils.file_is_readable(file)
+end
+
+local function recent_files()
+    local cwd = vim.fn.getcwd()
+    local current = vim.api.nvim_buf_get_name(0)
+    local has_current = current ~= ""
+    local oldfiles_count = #vim.v.oldfiles
+    local scores = {}
+
+    local function under_cwd(path)
+        local rel = vim.fs.relpath(cwd, path)
+        return rel ~= nil and not vim.startswith(rel, "..")
+    end
+
+    local function is_uri(path)
+        return path:match("^%w[%w+%-%.]*://") ~= nil
+    end
+
+    for i, f in ipairs(vim.v.oldfiles) do
+        if f ~= current and not is_uri(f) and under_cwd(f) then
+            scores[f] = oldfiles_count - i + 1
+        end
+    end
+
+    for _, b in ipairs(vim.api.nvim_list_bufs()) do
+        if vim.bo[b].buftype == "" then
+            local name = vim.api.nvim_buf_get_name(b)
+            if
+                name ~= ""
+                and not is_uri(name)
+                and name ~= current
+                and under_cwd(name)
+                and (scores[name] or valid_file(name))
+            then
+                local info = vim.fn.getbufinfo(b)[1]
+                ---@cast info -nil
+                scores[name] = math.max(info.lastused, scores[name] or 0)
+            end
+        end
+    end
+
+    local list = {}
+    for f in pairs(scores) do
+        table.insert(list, f)
+    end
+    table.sort(list, function(a, b)
+        return scores[a] > scores[b]
+    end)
+    for i, f in ipairs(list) do
+        list[i] = vim.fs.relpath(cwd, f) or f
+    end
+    if has_current then
+        table.insert(list, 1, vim.fs.relpath(cwd, current) or current)
+    end
+
+    fzf.fzf_exec(list, {
+        prompt = "> ",
+        previewer = false,
+        winopts = { title = " Recent " },
+        fzf_opts = has_current and { ["--header-lines"] = 1 } or nil,
+        actions = require("fzf-lua.config").globals.actions.files,
+    })
+end
+
 fzf.setup({
     defaults = {
         lopen = "lopen",
         copen = "copen",
+        git_icons = false,
+        file_icons = false,
     },
     winopts = {
         width = 80,
@@ -17,6 +92,7 @@ fzf.setup({
         row = 0.5,
         col = 0.5,
         backdrop = 100,
+        treesitter = false,
     },
     keymap = {
         builtin = {
@@ -79,10 +155,16 @@ fzf.setup({
         winopts = wide,
         multiline = 1,
     },
+    manpages = {
+        winopts = wide,
+    },
+    helptags = {
+        winopts = wide,
+    },
 })
 
 vim.keymap.set("n", "<leader>ff", fzf.files)
-vim.keymap.set("n", "<leader>fr", fzf.oldfiles)
+vim.keymap.set("n", "<leader>fr", recent_files)
 vim.keymap.set("n", "<leader>fg", fzf.live_grep)
 vim.keymap.set("n", "<leader>fG", function()
     fzf.live_grep({ cwd = vim.fn.expand("%:p:h") })