feat(picker): added toggle/flag/action for follow. Closes #633

lua/snacks/picker/actions.lua

@@ -352,6 +352,12 @@ function M.toggle_hidden(picker)
   picker:find()
 end
 
+function M.toggle_follow(picker)
+  local opts = picker.opts --[[@as snacks.picker.files.Config]]
+  opts.follow = not opts.follow
+  picker:find()
+end
+
 function M.list_top(picker)
   picker.list:move(1, true)
 end

lua/snacks/picker/config/defaults.lua

@@ -184,6 +184,7 @@ local defaults = {
         ["<c-q>"] = { "qflist", mode = { "i", "n" } },
         ["<a-i>"] = { "toggle_ignored", mode = { "i", "n" } },
         ["<a-h>"] = { "toggle_hidden", mode = { "i", "n" } },
+        ["<a-f>"] = { "toggle_follow", mode = { "i", "n" } },
       },
       b = {
         minipairs_disable = true,
@@ -256,6 +257,7 @@ local defaults = {
       live        = "󰐰 ",
       hidden      = "h",
       ignored     = "i",
+      follow      = "f",
       selected    = "● ",
       unselected  = "○ ",
       -- selected = " ",

lua/snacks/picker/config/highlights.lua

@@ -13,6 +13,7 @@ Snacks.util.set_hl({
   Flag = "DiagnosticVirtualTextInfo",
   FlagHidden = "SnacksPickerFlag",
   FlagIgnored = "SnacksPickerFlag",
+  FlagFollow = "SnacksPickerFlag",
   Dir = "NonText",
   Dimmed = "Conceal",
   Row = "String",

lua/snacks/picker/core/picker.lua

@@ -219,6 +219,10 @@ function M:update_titles()
   }
   local opts = self.opts --[[@as snacks.picker.files.Config]]
   local flags = {} ---@type snacks.picker.Text[]
+  if opts.follow then
+    flags[#flags + 1] = { " " .. self.opts.icons.ui.follow .. " ", "SnacksPickerFlagFollow" }
+    flags[#flags + 1] = { " ", "FloatTitle" }
+  end
   if opts.hidden then
     flags[#flags + 1] = { " " .. self.opts.icons.ui.hidden .. " ", "SnacksPickerFlagHidden" }
     flags[#flags + 1] = { " ", "FloatTitle" }