feat(explorer): add hl groups for ignored / hidden files. Closes #887

lua/snacks/picker/config/highlights.lua

@@ -11,6 +11,8 @@ Snacks.util.set_hl({
   Totals = "NonText",
   File = "", -- basename of a file path
   Directory = "Directory", -- basename of a directory path
+  PathIgnored = "NonText", -- any ignored file or directory
+  PathHidden = "NonText", -- any hidden file or directory
   Dir = "NonText", -- dirname of a path
   Toggle = "DiagnosticVirtualTextInfo",
   Dimmed = "Conceal",

lua/snacks/picker/config/sources.lua

@@ -252,6 +252,8 @@ M.git_stash = {
   confirm = "git_stash_apply",
 }
 
+---@class snacks.picker.git.status.Config: snacks.picker.Config
+---@field ignored? boolean show ignored files
 M.git_status = {
   finder = "git_status",
   format = "git_status",

lua/snacks/picker/format.lua

@@ -51,6 +51,21 @@ function M.filename(item, picker)
   end
 
   local base_hl = item.dir and "SnacksPickerDirectory" or "SnacksPickerFile"
+  local function is(prop)
+    local it = item
+    while it do
+      if it[prop] then
+        return true
+      end
+      it = it.parent
+    end
+  end
+
+  if is("ignored") then
+    base_hl = "SnacksPickerPathIgnored"
+  elseif is("hidden") then
+    base_hl = "SnacksPickerPathHidden"
+  end
   local dir_hl = "SnacksPickerDir"
 
   if picker.opts.formatters.file.filename_only then

lua/snacks/picker/source/explorer.lua

@@ -146,6 +146,7 @@ local git_tree_status = {} ---@type table<string, string>
 ---@field git_status {file: string, status: string, sort?:string}[]
 ---@field expanded table<string, boolean>
 ---@field cache table<string, snacks.picker.explorer.Item[]>
+---@field cache_opts? snacks.picker.explorer.Config|{}
 local State = {}
 State.__index = State
 ---@param picker snacks.Picker
@@ -213,19 +214,21 @@ function State:update_git_status()
   -- Update tree status
   git_tree_status = {}
 
-  ---@param p string
-  ---@param s string
-  ---@param is_dir? boolean
-  local function add_git_status(p, s, is_dir)
-    git_tree_status[p] = git_tree_status[p] and Git.merge_status(git_tree_status[p], s) or s
+  ---@param path string
+  ---@param status string
+  local function add_git_status(path, status)
+    git_tree_status[path] = git_tree_status[path] and Git.merge_status(git_tree_status[path], status) or status
   end
 
   -- Add git status to files and parents
   for _, s in ipairs(self.git_status) do
-    add_git_status(s.file, s.status)
-    add_git_status(self.cwd, s.status, true)
-    for dir in Snacks.picker.util.parents(s.file, self.cwd) do
-      add_git_status(dir, s.status, true)
+    local path = s.file:gsub("/$", "")
+    add_git_status(path, s.status)
+    if s.status:sub(1, 1) ~= "!" then -- don't propagate ignored status
+      add_git_status(self.cwd, s.status)
+      for dir in Snacks.picker.util.parents(path, self.cwd) do
+        add_git_status(dir, s.status)
+      end
     end
   end
 end
@@ -642,7 +645,9 @@ function M.explorer(opts, ctx)
   local tick = state.tick
   opts.notify = false
   local expanded = {} ---@type table<string, boolean>
-  local use_cache = not state.all
+  local cache_opts = { hidden = opts.hidden, ignored = opts.ignored }
+
+  local use_cache = not state.all and vim.deep_equal(state.cache_opts, cache_opts)
   for _, dir in ipairs(opts.dirs or {}) do
     expanded[dir] = true
     use_cache = use_cache and state.cache[dir] ~= nil
@@ -650,6 +655,7 @@ function M.explorer(opts, ctx)
 
   if not use_cache then
     state.cache = {}
+    state.cache_opts = cache_opts
   end
 
   ---@param path string
@@ -659,7 +665,14 @@ function M.explorer(opts, ctx)
 
   ---@param item snacks.picker.explorer.Item
   local function add_git_status(item)
-    item.status = (opts.git_status_open or not item.open) and git_tree_status[item.file or ""] or nil
+    item.status = git_tree_status[item.file or ""] or nil
+    local ignored = item.status and item.status:sub(1, 1) == "!"
+    if item.open and not opts.git_status_open and not ignored then
+      item.status = nil
+    end
+    if item.status and ignored then
+      item.ignored = true
+    end
   end
 
   ---@type snacks.picker.explorer.Item
@@ -721,6 +734,9 @@ function M.explorer(opts, ctx)
       else
         item.sort = parent.sort .. "#" .. basename .. " "
       end
+      if basename:sub(1, 1) == "." then
+        item.hidden = true
+      end
       add_git_status(item)
 
       if opts.tree then

lua/snacks/picker/source/git.lua

@@ -98,7 +98,7 @@ function M.log(opts, ctx)
   }, ctx)
 end
 
----@param opts snacks.picker.Config
+---@param opts snacks.picker.git.status.Config
 ---@type snacks.picker.finder
 function M.status(opts, ctx)
   local args = {
@@ -107,6 +107,9 @@ function M.status(opts, ctx)
     "-uall",
     "--porcelain=v1",
   }
+  if opts.ignored then
+    table.insert(args, "--ignored=matching")
+  end
 
   local cwd = vim.fs.normalize(opts and opts.cwd or uv.cwd() or ".") or nil
   cwd = Snacks.git.get_root(cwd)