[Feature] Introduce `auto' style for buffer file names.

Close #179. `auto' style is the default style now. Given ~/Projects/FOSS/emacs/lisp/comint.el auto => emacs/lisp/comint.el (in a project) or comint.el truncate-upto-project => ~/P/F/emacs/lisp/comint.el truncate-from-project => ~/Projects/FOSS/emacs/l/comint.el truncate-with-project => emacs/l/comint.el truncate-except-project => ~/P/F/emacs/l/comint.el truncate-upto-root => ~/P/F/e/lisp/comint.el truncate-all => ~/P/F/e/l/comint.el relative-from-project => emacs/lisp/comint.el relative-to-project => lisp/comint.el file-name => comint.el buffer-name => comint.el<2> (uniquify buffer name)"
2025-03-04 17:01:39 -05:00 · 2020-02-11 01:51:52 +08:00 · 2020-02-11 01:51:52 +08:00 · 43a78ad7eb
commit 43a78ad7eb
parent e6d690bae0
6 changed files with 253 additions and 90 deletions
--- a/README.md
+++ b/README.md
@ -181,6 +181,7 @@ Run `M-x customize-group RET doom-modeline RET` or set the variables.
 ;; Determines the style used by `doom-modeline-buffer-file-name'.
 ;;
 ;; Given ~/Projects/FOSS/emacs/lisp/comint.el
+;;   auto => emacs/lisp/comint.el (in a project) or comint.el
 ;;   truncate-upto-project => ~/P/F/emacs/lisp/comint.el
 ;;   truncate-from-project => ~/Projects/FOSS/emacs/l/comint.el
 ;;   truncate-with-project => emacs/l/comint.el
@ -195,7 +196,7 @@ Run `M-x customize-group RET doom-modeline RET` or set the variables.
 ;; If you are experiencing the laggy issue, especially while editing remote files
 ;; with tramp, please try `file-name' style.
 ;; Please refer to https://github.com/bbatsov/projectile/issues/657.
-(setq doom-modeline-buffer-file-name-style 'truncate-upto-project)
+(setq doom-modeline-buffer-file-name-style 'auto)

 ;; Whether display icons in mode-line. Respects `all-the-icons-color-icons'.
 ;; While using the server mode in GUI, should set the value explicitly.
--- a/doom-modeline-core.el
+++ b/doom-modeline-core.el
@ -173,10 +173,11 @@ Specify another one if you encounter the issue."
          (const :tag "Disable" nil))
  :group 'doom-modeline)

-(defcustom doom-modeline-buffer-file-name-style 'truncate-upto-project
+(defcustom doom-modeline-buffer-file-name-style 'auto
  "Determines the style used by `doom-modeline-buffer-file-name'.

  Given ~/Projects/FOSS/emacs/lisp/comint.el
+  auto => emacs/lisp/comint.el (in a project) or comint.el
  truncate-upto-project => ~/P/F/emacs/lisp/comint.el
  truncate-from-project => ~/Projects/FOSS/emacs/l/comint.el
  truncate-with-project => emacs/l/comint.el
@ -187,7 +188,8 @@ Specify another one if you encounter the issue."
  relative-to-project => lisp/comint.el
  file-name => comint.el
  buffer-name => comint.el<2> (uniquify buffer name)"
-  :type '(choice (const truncate-upto-project)
+  :type '(choice (const auto)
+                 (const truncate-upto-project)
                 (const truncate-upto-project)
                 (const truncate-from-project)
                 (const truncate-with-project)
@ -839,26 +841,6 @@ UNICODE is the unicode char fallback. TEXT is the ASCII char fallback."
          (propertize unicode 'face face))
        (when text (propertize text 'face face)))))

-(defvar-local doom-modeline-project-root nil)
-(defun doom-modeline-project-root ()
-  "Get the path to the root of your project.
-Return `default-directory' if no project was found."
-  (setq doom-modeline-project-root
-        (or doom-modeline-project-root
-            (pcase doom-modeline-project-detection
-              ('ffip
-               (when (fboundp 'ffip-get-project-root-directory)
-                 (let ((inhibit-message t))
-                   (ffip-get-project-root-directory))))
-              ('projectile
-               (when (fboundp 'projectile-project-root)
-                 (projectile-project-root)))
-              ('project
-               (when (fboundp 'project-current)
-                 (when-let ((project (project-current)))
-                   (car (project-roots project))))))
-            default-directory)))
-
 (defun doom-modeline--make-xpm (face width height)
  "Create an XPM bitmap via FACE, WIDTH and HEIGHT. Inspired by `powerline''s `pl/make-xpm'."
  (when (and (display-graphic-p)
@ -885,9 +867,40 @@ Return `default-directory' if no project was found."
                                     if (= d 0) collect (string-to-char " ")
                                     else collect (string-to-char "."))
                            (if (eq idx len) "\"};" "\",\n")))))
-  'xpm t :ascent 'center))))))
+          'xpm t :ascent 'center))))))

-;; Fix: invalid-regexp "Trailing backslash" while handling $HOME on Windows
+(defvar-local doom-modeline--project-detected-p nil)
+(defvar-local doom-modeline--project-root nil)
+(defun doom-modeline--project-root ()
+  "Get the path to the root of your project.
+Return nil if no project was found."
+  (if doom-modeline--project-detected-p
+      doom-modeline--project-root
+    (setq doom-modeline--project-root
+          (pcase doom-modeline-project-detection
+            ('ffip
+             (when (fboundp 'ffip-get-project-root-directory)
+               (let ((inhibit-message t))
+                 (ffip-get-project-root-directory))))
+            ('projectile
+             (when (fboundp 'projectile-project-root)
+               (projectile-project-root)))
+            ('project
+             (when (fboundp 'project-current)
+               (when-let ((project (project-current)))
+                 (car (project-roots project))))))
+          doom-modeline--project-detected-p t)))
+
+(defun doom-modeline-project-p ()
+  "Check if the file is in a project."
+  (doom-modeline--project-root))
+
+(defun doom-modeline-project-root ()
+  "Get the path to the root of your project.
+Return `default-directory' if no project was found."
+  (or (doom-modeline--project-root) default-directory))
+
+;; HACK: fix invalid-regexp "Trailing backslash" while handling $HOME on Windows
 (defun doom-modeline-shrink-path--dirs-internal (full-path &optional truncate-all)
  "Return fish-style truncated string based on FULL-PATH.
 Optional parameter TRUNCATE-ALL will cause the function to truncate the last
@ -912,36 +925,34 @@ directory too."
 (defun doom-modeline-buffer-file-name ()
  "Propertized variable `buffer-file-name' based on `doom-modeline-buffer-file-name-style'."
  (let* ((buffer-file-name (file-local-name (or (buffer-file-name (buffer-base-buffer)) "")))
-         (buffer-file-truename (file-local-name (or buffer-file-truename (file-truename buffer-file-name) ""))))
+         (buffer-file-truename (file-local-name (or buffer-file-truename (file-truename buffer-file-name) "")))
+         (face (if (buffer-modified-p) 'doom-modeline-buffer-modified 'doom-modeline-buffer-file)))
    (propertize
     (pcase doom-modeline-buffer-file-name-style
-       (`truncate-upto-project
+       ('auto
+        (if (doom-modeline-project-p)
+            (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename nil nil 'hide)
+          (propertize (file-name-nondirectory buffer-file-name) 'face face)))
+       ('truncate-upto-project
        (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename 'shrink))
-       (`truncate-from-project
+       ('truncate-from-project
        (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename nil 'shrink))
-       (`truncate-with-project
+       ('truncate-with-project
        (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename 'shrink 'shink 'hide))
-       (`truncate-except-project
+       ('truncate-except-project
        (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename 'shrink 'shink))
-       (`truncate-upto-root
+       ('truncate-upto-root
        (doom-modeline--buffer-file-name-truncate buffer-file-name buffer-file-truename))
-       (`truncate-all
+       ('truncate-all
        (doom-modeline--buffer-file-name-truncate buffer-file-name buffer-file-truename t))
-       (`relative-to-project
+       ('relative-to-project
        (doom-modeline--buffer-file-name-relative buffer-file-name buffer-file-truename))
-       (`relative-from-project
+       ('relative-from-project
        (doom-modeline--buffer-file-name buffer-file-name buffer-file-truename nil nil 'hide))
-       (style
-        (propertize
-         (pcase style
-           (`file-name (file-name-nondirectory buffer-file-name))
-           (`buffer-name (buffer-name)))
-         'face
-         (let ((face (or (and (buffer-modified-p)
-                              'doom-modeline-buffer-modified)
-                         (and (doom-modeline--active)
-                              'doom-modeline-buffer-file))))
-           (when face `(:inherit ,face))))))
+       ('file-name
+        (propertize (file-name-nondirectory buffer-file-name) 'face face))
+       ('buffer-name
+        (propertize (buffer-name) 'face face)))
     'mouse-face 'mode-line-highlight
     'help-echo (concat buffer-file-truename
                        (unless (string= (file-name-nondirectory buffer-file-truename)
@ -953,39 +964,43 @@ directory too."
 (defun doom-modeline--buffer-file-name-truncate (file-path true-file-path &optional truncate-tail)
  "Propertized variable `buffer-file-name' that truncates every dir along path.
 If TRUNCATE-TAIL is t also truncate the parent directory of the file."
-  (let ((dirs (shrink-path-prompt (file-name-directory true-file-path)))
-        (active (doom-modeline--active)))
+  (let ((dirs (shrink-path-prompt (file-name-directory true-file-path))))
    (if (null dirs)
-        (propertize "%b" 'face (if active 'doom-modeline-buffer-file))
-      (let ((modified-faces (if (buffer-modified-p) 'doom-modeline-buffer-modified)))
+        (propertize "%b" 'face 'doom-modeline-buffer-file)
+      (let ((modified-face (and (buffer-modified-p) 'doom-modeline-buffer-modified)))
        (let ((dirname (car dirs))
              (basename (cdr dirs))
-              (dir-faces (or modified-faces (if active 'doom-modeline-project-root-dir)))
-              (file-faces (or modified-faces (if active 'doom-modeline-buffer-file))))
+              (dir-face (or modified-face 'doom-modeline-project-root-dir))
+              (file-face (or modified-face 'doom-modeline-buffer-file)))
          (concat (propertize (concat dirname
                                      (if truncate-tail (substring basename 0 1) basename)
                                      "/")
-                              'face (if dir-faces `(:inherit ,dir-faces)))
+                              'face (and dir-face `(:inherit ,dir-face)))
                  (propertize (file-name-nondirectory file-path)
-                              'face (if file-faces `(:inherit ,file-faces)))))))))
+                              'face (and file-face `(:inherit ,file-face)))))))))

 (defun doom-modeline--buffer-file-name-relative (_file-path true-file-path &optional include-project)
  "Propertized variable `buffer-file-name' showing directories relative to project's root only."
  (let ((root (file-local-name (doom-modeline-project-root)))
        (active (doom-modeline--active)))
    (if (null root)
-        (propertize "%b" 'face (if active 'doom-modeline-buffer-file))
-      (let* ((modified-faces (if (buffer-modified-p) 'doom-modeline-buffer-modified))
+        (propertize "%b" 'face 'doom-modeline-buffer-file)
+      (let* ((modified-face (and (buffer-modified-p) 'doom-modeline-buffer-modified))
             (relative-dirs (file-relative-name (file-name-directory true-file-path)
                                                (if include-project (concat root "../") root)))
-             (relative-faces (or modified-faces (if active 'doom-modeline-buffer-path)))
-             (file-faces (or modified-faces (if active 'doom-modeline-buffer-file))))
+             (relative-face (or modified-face 'doom-modeline-buffer-path))
+             (file-face (or modified-face 'doom-modeline-buffer-file)))
        (if (equal "./" relative-dirs) (setq relative-dirs ""))
-        (concat (propertize relative-dirs 'face (if relative-faces `(:inherit ,relative-faces)))
+        (concat (propertize relative-dirs 'face (if relative-face `(:inherit ,relative-face)))
                (propertize (file-name-nondirectory true-file-path)
-                            'face (if file-faces `(:inherit ,file-faces))))))))
+                            'face (if file-face `(:inherit ,file-face))))))))

-(defun doom-modeline--buffer-file-name (file-path _true-file-path &optional truncate-project-root-parent truncate-project-relative-path hide-project-root-parent)
+(defun doom-modeline--buffer-file-name (file-path
+                                        _true-file-path
+                                        &optional
+                                        truncate-project-root-parent
+                                        truncate-project-relative-path
+                                        hide-project-root-parent)
  "Propertized variable `buffer-file-name' given by FILE-PATH.
 If TRUNCATE-PROJECT-ROOT-PARENT is non-nil will be saved by truncating project
 root parent down fish-shell style.
@ -1004,12 +1019,11 @@ If HIDE-PROJECT-ROOT-PARENT is non-nil will hide project root parent.
 Example:
  ~/Projects/FOSS/emacs/lisp/comint.el => emacs/lisp/comint.el"
  (let ((project-root (file-local-name (doom-modeline-project-root)))
-        (active (doom-modeline--active))
-        (modified-faces (if (buffer-modified-p) 'doom-modeline-buffer-modified)))
-    (let ((sp-faces       (or modified-faces (if active 'doom-modeline-project-parent-dir)))
-          (project-faces  (or modified-faces (if active 'doom-modeline-project-dir)))
-          (relative-faces (or modified-faces (if active 'doom-modeline-buffer-path)))
-          (file-faces     (or modified-faces (if active 'doom-modeline-buffer-file))))
+        (modified-face (and (buffer-modified-p) 'doom-modeline-buffer-modified)))
+    (let ((sp-face       (or modified-face 'doom-modeline-project-parent-dir))
+          (project-face  (or modified-face 'doom-modeline-project-dir))
+          (relative-face (or modified-face 'doom-modeline-buffer-path))
+          (file-face     (or modified-face 'doom-modeline-buffer-file)))
      (concat
       ;; project root parent
       (unless hide-project-root-parent
@ -1021,11 +1035,11 @@ Example:
                     (not (string= root-path-parent "/")))
                (shrink-path--dirs-internal root-path-parent t)
              (abbreviate-file-name root-path-parent))
-            'face sp-faces)))
+            'face sp-face)))
       ;; project
       (propertize
        (concat (file-name-nondirectory (directory-file-name project-root)) "/")
-        'face project-faces)
+        'face project-face)
       ;; relative path
       (propertize
        (when-let (relative-path (file-relative-name
@ -1036,9 +1050,9 @@ Example:
            (if truncate-project-relative-path
                (substring (shrink-path--dirs-internal relative-path t) 1)
              relative-path)))
-        'face relative-faces)
+        'face relative-face)
       ;; file name
-       (propertize (file-name-nondirectory file-path) 'face file-faces)))))
+       (propertize (file-name-nondirectory file-path) 'face file-face)))))

 (provide 'doom-modeline-core)

--- a/doom-modeline-segments.el
+++ b/doom-modeline-segments.el
@ -304,7 +304,6 @@ Uses `all-the-icons-material' to fetch the icon."
 mouse-1: Previous buffer\nmouse-3: Next buffer"
                          'local-map mode-line-buffer-identification-keymap))))))
 (add-hook 'find-file-hook #'doom-modeline-update-buffer-file-name)
-(add-hook 'after-revert-hook #'doom-modeline-update-buffer-file-name)
 (add-hook 'after-save-hook #'doom-modeline-update-buffer-file-name)
 (add-hook 'clone-indirect-buffer-hook #'doom-modeline-update-buffer-file-name)
 (add-hook 'evil-insert-state-exit-hook #'doom-modeline-update-buffer-file-name)
@ -595,7 +594,7 @@ Uses `all-the-icons-octicon' to fetch the icon."
                   (doom-modeline-vcs-icon "alert" "⚠" "!" 'doom-modeline-urgent))
                  (t
                   (doom-modeline-vcs-icon "git-branch" "" "@" 'doom-modeline-info -0.05)))))))
-(add-hook 'find-file-hook #'doom-modeline-update-vcs-icon t)
+(add-hook 'find-file-hook #'doom-modeline-update-vcs-icon)
 (add-hook 'after-save-hook #'doom-modeline-update-vcs-icon)
 (advice-add #'vc-refresh-state :after #'doom-modeline-update-vcs-icon)

@ -638,7 +637,7 @@ Uses `all-the-icons-octicon' to fetch the icon."
                                    ((memq state '(removed conflict unregistered))
                                     'doom-modeline-urgent)
                                    (t 'doom-modeline-info)))))))
-(add-hook 'find-file-hook #'doom-modeline-update-vcs-text t)
+(add-hook 'find-file-hook #'doom-modeline-update-vcs-text)
 (add-hook 'after-save-hook #'doom-modeline-update-vcs-text)
 (advice-add #'vc-refresh-state :after #'doom-modeline-update-vcs-text)

--- a/doom-modeline.el
+++ b/doom-modeline.el
@ -4,7 +4,7 @@

 ;; Author: Vincent Zhang <seagle0128@gmail.com>
 ;; Homepage: https://github.com/seagle0128/doom-modeline
-;; Version: 2.9.2
+;; Version: 3.0.0
 ;; Package-Requires: ((emacs "25.1") (all-the-icons "2.2.0") (shrink-path "0.2.0") (dash "2.11.0"))
 ;; Keywords: faces mode-line

--- a/test/doom-modeline-core-test.el
+++ b/test/doom-modeline-core-test.el
@ -31,6 +31,7 @@

 ;;; Code:

+(require 'cl-lib)
 (require 'doom-modeline-core)

 (ert-deftest doom-modeline-icon/octicon-icon ()
@ -60,34 +61,171 @@
 (ert-deftest doom-modeline-project-root/ffip ()
  (let ((default-directory "/home/user/project/")
        (doom-modeline-project-detection 'ffip)
-        (doom-modeline-project-root nil))
+        (doom-modeline--project-detected-p t)
+        (doom-modeline--project-root nil))
    (cl-flet ((ffip-get-project-root-directory () "/home/user/project-ffip/"))
      (should (string= (ffip-get-project-root-directory) "/home/user/project-ffip/")))))

 (ert-deftest doom-modeline-project-root/projectile ()
  (let ((default-directory "/home/user/projectile/")
        (doom-modeline-project-detection 'projectile)
-        (doom-modeline-project-root nil))
+        (doom-modeline--project-detected-p t)
+        (doom-modeline--project-root nil))
    (cl-flet ((projectile-project-root () default-directory))
      (should (string= (doom-modeline-project-root) "/home/user/projectile/")))))

 (ert-deftest doom-modeline-project-root/project ()
  (let ((default-directory "/home/user/project-current/")
        (doom-modeline-project-detection 'project)
-        (doom-modeline-project-root nil))
+        (doom-modeline--project-detected-p t)
+        (doom-modeline--project-root nil))
    (cl-flet ((project-current (&optional _maybe-prompt _dir)
                               `(vc . ,default-directory)))
      (should (string= (doom-modeline-project-root) "/home/user/project-current/")))))

 (ert-deftest doom-modeline-project-root/default ()
  (let ((default-directory "/home/user/project/")
-        (doom-modeline-project-detection nil))
+        (doom-modeline-project-detection nil)
+        (doom-modeline--project-detected-p t))
    (should (string= (doom-modeline-project-root) "/home/user/project/"))))

+(ert-deftest doom-modeline-buffer-file-name/auto-in-project ()
+  (let* ((default-directory "/home/user/project/")
+         (buffer-file-name "/home/user/project/relative/test.txt")
+         (buffer-file-truename "/home/user/project/relative/test.txt")
+         (doom-modeline--project-detected-p t)
+         (doom-modeline--project-root default-directory)
+         (doom-modeline-buffer-file-name-style 'auto))
+    (cl-flet ((doom-modeline-project-p () t)
+              (doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "project/relative/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/auto-file-name ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'auto))
+    (cl-flet ((doom-modeline-project-p () nil)
+              (doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/file-name ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'file-name))
+    (should
+     (string= (strip-text-properties (doom-modeline-buffer-file-name))
+              "test.txt"))))
+
+(ert-deftest doom-modeline-buffer-file-name/buffer-name ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'buffer-name))
+    (should
+     (string= (strip-text-properties (doom-modeline-buffer-file-name))
+              (buffer-name)))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-upto-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'truncate-upto-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "/h/u/project/relative/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-from-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'truncate-from-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "/home/user/project/r/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-with-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'truncate-with-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "project/r/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-except-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'truncate-except-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "/h/u/project/r/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-upto-root ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'truncate-upto-root))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "/h/u/p/relative/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/truncate-all ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline-buffer-file-name-style 'truncate-all))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "/h/u/p/r/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/relative-to-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'relative-to-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "relative/test.txt")))))
+
+(ert-deftest doom-modeline-buffer-file-name/relative-from-project ()
+  (let ((default-directory "/home/user/project/")
+        (buffer-file-name "/home/user/project/relative/test.txt")
+        (buffer-file-truename "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t)
+        (doom-modeline-buffer-file-name-style 'relative-from-project))
+    (cl-flet ((doom-modeline-project-root () default-directory))
+      (should
+       (string= (strip-text-properties (doom-modeline-buffer-file-name))
+                "project/relative/test.txt")))))
+
 (ert-deftest doom-modeline--buffer-file-name/truncate-upto-project ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path nil))
+        (true-file-path nil)
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name file-path true-file-path 'shrink))
@ -96,7 +234,8 @@
 (ert-deftest doom-modeline--buffer-file-name/truncate-from-project ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path nil))
+        (true-file-path nil)
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name file-path true-file-path nil 'shrink))
@ -105,7 +244,8 @@
 (ert-deftest doom-modeline--buffer-file-name/truncate-with-project ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path nil))
+        (true-file-path nil)
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name file-path true-file-path 'shrink 'shrink 'hide))
@ -114,7 +254,8 @@
 (ert-deftest doom-modeline--buffer-file-name/truncate-except-project ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path nil))
+        (true-file-path nil)
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name file-path true-file-path 'shrink 'shrink))
@ -123,26 +264,29 @@
 (ert-deftest doom-modeline--buffer-file-name-truncate/truncate-upto-root ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path "~/project/relative/test.txt"))
+        (true-file-path "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name-truncate file-path true-file-path))
-              "~/p/relative/test.txt"))))
+              "/h/u/p/relative/test.txt"))))

 (ert-deftest doom-modeline--buffer-file-name-truncate/truncate-all ()
  (let ((default-directory "/home/user/project/")
        (file-path "/home/user/project/relative/test.txt")
-        (true-file-path "~/project/relative/test.txt"))
+        (true-file-path "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t))
    (should
     (string= (strip-text-properties
               (doom-modeline--buffer-file-name-truncate file-path true-file-path t))
-              "~/p/r/test.txt"))))
+              "/h/u/p/r/test.txt"))))

 (ert-deftest doom-modeline--buffer-file-name-relative/relative-to-project ()
  (let ((default-directory "/home/user/project/")
        (file-path nil)
-        (true-file-path "/home/user/project/relative/test.txt"))
-    (cl-flet ((doom-modeline-project-root () "/home/user/project/"))
+        (true-file-path "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t))
+    (cl-flet ((doom-modeline-project-root () default-directory))
      (should
       (string= (strip-text-properties
                 (doom-modeline--buffer-file-name-relative file-path true-file-path))
@ -151,8 +295,9 @@
 (ert-deftest doom-modeline--buffer-file-name-relative/relative-from-project ()
  (let ((default-directory "/home/user/project/")
        (file-path nil)
-        (true-file-path "/home/user/project/relative/test.txt"))
-    (cl-flet ((doom-modeline-project-root () "/home/user/project/"))
+        (true-file-path "/home/user/project/relative/test.txt")
+        (doom-modeline--project-detected-p t))
+    (cl-flet ((doom-modeline-project-root () default-directory))
      (should
       (string= (strip-text-properties
                 (doom-modeline--buffer-file-name-relative file-path true-file-path 'include-project))
--- a/test/test-helper.el
+++ b/test/test-helper.el
@ -32,6 +32,10 @@

 (add-to-list 'load-path (expand-file-name "."))

+;; @see https://github.com/rejeep/ert-runner.el/issues/49
+(when (> emacs-major-version 26)
+  (defalias 'ert--print-backtrace 'backtrace-to-string))
+
 (defun strip-text-properties(txt)
  "Strip text properties of TXT."
  (set-text-properties 0 (length txt) nil txt)