fix(utils): transform_path filename_first composability (#3065)

* Moves filename_first to last position to fix issues with composing other options

* Adds comment

lua/telescope/utils.lua

@@ -307,6 +307,28 @@ utils.transform_path = function(opts, path)
  transformed_path = Path:new(transformed_path):make_relative(cwd)
  end
 
+ if vim.tbl_contains(path_display, "shorten") or path_display["shorten"] ~= nil then
+ if type(path_display["shorten"]) == "table" then
+ local shorten = path_display["shorten"]
+ transformed_path = Path:new(transformed_path):shorten(shorten.len, shorten.exclude)
+ else
+ local length = type(path_display["shorten"]) == "number" and path_display["shorten"]
+ transformed_path = Path:new(transformed_path):shorten(length)
+ end
+ end
+
+ if vim.tbl_contains(path_display, "truncate") or path_display.truncate then
+ if opts.__length == nil then
+ opts.__length = calc_result_length(path_display.truncate)
+ end
+ if opts.__prefix == nil then
+ opts.__prefix = 0
+ end
+ transformed_path = truncate(transformed_path, opts.__length - opts.__prefix, nil, -1)
+ end
+
+ -- IMPORTANT: filename_first needs to be the last option. Otherwise the
+ -- other options will not be displayed correctly.
  if vim.tbl_contains(path_display, "filename_first") or path_display["filename_first"] ~= nil then
  local reverse_directories = false
 
@@ -337,26 +359,6 @@ utils.transform_path = function(opts, path)
 
  path_style = { { { #filename, #transformed_path }, "TelescopeResultsComment" } }
  end
-
- if vim.tbl_contains(path_display, "shorten") or path_display["shorten"] ~= nil then
- if type(path_display["shorten"]) == "table" then
- local shorten = path_display["shorten"]
- transformed_path = Path:new(transformed_path):shorten(shorten.len, shorten.exclude)
- else
- local length = type(path_display["shorten"]) == "number" and path_display["shorten"]
- transformed_path = Path:new(transformed_path):shorten(length)
- end
- end
-
- if vim.tbl_contains(path_display, "truncate") or path_display.truncate then
- if opts.__length == nil then
- opts.__length = calc_result_length(path_display.truncate)
- end
- if opts.__prefix == nil then
- opts.__prefix = 0
- end
- transformed_path = truncate(transformed_path, opts.__length - opts.__prefix, nil, -1)
- end
  end
 
  return transformed_path, path_style