feat(picker): allow appending original window's cfile to prompt

Change-Id: I0a69a24a89bfebeda6bb68cb8d3bc7aa174dbf77

README.md

@@ -263,8 +263,9 @@ Many familiar mapping patterns are set up as defaults.
 | `<C-q>` | Send all items not filtered to quickfixlist (qflist) |
 | `<M-q>` | Send all selected items to qflist |
 | `<C-r><C-w>` | Insert cword in original window into prompt (insert mode) |
-| `<C-r><C-e>` | Insert cWORD in original window into prompt (insert mode) |
-| `<C-r><C-l>` | Insert line in original window into prompt (insert mode) |
+| `<C-r><C-a>` | Insert cWORD in original window into prompt (insert mode) |
+| `<C-r><C-f>` | Insert cfile in original window into prompt (insert mode) |
+| `<C-r><C-l>` | Insert cline in original window into prompt (insert mode) |
 
 To see the full list of mappings, check out `lua/telescope/mappings.lua` and the
 `default_mappings` table.

lua/telescope/actions/init.lua

@@ -1503,6 +1503,13 @@ actions.insert_original_cWORD = function(prompt_bufnr)
  current_picker:set_prompt(current_picker.original_cWORD, false)
 end
 
+--- Insert the file under the cursor of the original (pre-Telescope) window
+---@param prompt_bufnr number: The prompt bufnr
+actions.insert_original_cfile = function(prompt_bufnr)
+ local current_picker = action_state.get_current_picker(prompt_bufnr)
+ current_picker:set_prompt(current_picker.original_cfile, false)
+end
+
 --- Insert the line under the cursor of the original (pre-Telescope) window
 ---@param prompt_bufnr number: The prompt bufnr
 actions.insert_original_cline = function(prompt_bufnr)

lua/telescope/mappings.lua

@@ -176,7 +176,8 @@ mappings.default_mappings = config.values.default_mappings
  ["<C-_>"] = actions.which_key, -- keys from pressing <C-/>
  ["<C-w>"] = { "<c-s-w>", type = "command" },
  ["<C-r><C-w>"] = actions.insert_original_cword,
- ["<C-r><C-e>"] = actions.insert_original_cWORD,
+ ["<C-r><C-a>"] = actions.insert_original_cWORD,
+ ["<C-r><C-f>"] = actions.insert_original_cfile,
  ["<C-r><C-l>"] = actions.insert_original_cline,
 
  -- disable c-j because we dont want to allow new lines #2123

lua/telescope/pickers.lua

@@ -538,6 +538,7 @@ function Picker:find()
  self.original_win_id = a.nvim_get_current_win()
  _, self.original_cword = pcall(vim.fn.expand, "<cword>")
  _, self.original_cWORD = pcall(vim.fn.expand, "<cWORD>")
+ _, self.original_cfile = pcall(vim.fn.expand, "<cfile>")
  _, self.original_cline = pcall(vim.trim, vim.api.nvim_get_current_line())
 
  -- User autocmd run it before create Telescope window