feat: add configuration to fix encoding of output of find_command in find_files (#2232)

doc/telescope.txt

@@ -844,6 +844,7 @@ builtin.find_files({opts})                    *telescope.builtin.find_files()*
         {find_command}        (function|table) cmd to use for the search. Can be
                                                a fn(opts) -> tbl (default:
                                                autodetect)
+        {file_entry_encoding} (string)         encoding of output of `find_command`
         {follow}              (boolean)        if true, follows symlinks (i.e.
                                                uses `-L` flag for the `find`
                                                command)

lua/telescope/builtin/init.lua

@@ -74,6 +74,7 @@ builtin.grep_string = require_on_exported_call("telescope.builtin.__files").grep
 ---@param opts table: options to pass to the picker
 ---@field cwd string: root dir to search from (default: cwd, use utils.buffer_dir() to search relative to open buffer)
 ---@field find_command function|table: cmd to use for the search. Can be a fn(opts) -> tbl (default: autodetect)
+---@field file_entry_encoding string: encoding of output of `find_command`
 ---@field follow boolean: if true, follows symlinks (i.e. uses `-L` flag for the `find` command)
 ---@field hidden boolean: determines whether to show hidden files or not (default: false)
 ---@field no_ignore boolean: show files ignored by .gitignore, .ignore, etc. (default: false)

lua/telescope/make_entry.lua

@@ -192,11 +192,18 @@ do
       return rawget(t, rawget(lookup_keys, k))
     end
 
+    if opts.file_entry_encoding then
+      return function(line)
+        line = vim.iconv(line, opts.file_entry_encoding, "utf8")
+        return setmetatable({ line }, mt_file_entry)
+      end
+    else
       return function(line)
         return setmetatable({ line }, mt_file_entry)
       end
     end
   end
+end
 
 do
   local lookup_keys = {