💥 Drop Emacs 25.x support

Emacs 26.1 is Doom's new minimum supported version

Closes #2026

core/autoload/line-numbers.el

@@ -1,92 +0,0 @@
-;;; core/autoload/line-numbers.el -*- lexical-binding: t; -*-
-;;;###if (version< emacs-version "26.1")
-
-;; DEPRECATED This was lifted out of the display-line-numbers library in Emacs
-;; 26.1 and modified to use nlinum for Emacs 25.x users. It should be removed
-;; should Emacs 25 support be removed.
-
-;;;###autoload
-(defvar display-line-numbers t
-  "Non-nil means display line numbers.
-
-If the value is t, display the absolute number of each line of a buffer
-shown in a window.  Absolute line numbers count from the beginning of
-the current narrowing, or from buffer beginning.  If the value is
-relative, display for each line not containing the window's point its
-relative number instead, i.e. the number of the line relative to the
-line showing the window's point.
-
-In either case, line numbers are displayed at the beginning of each
-non-continuation line that displays buffer text, i.e. after each newline
-character that comes from the buffer.  The value visual is like
-relative but counts screen lines instead of buffer lines.  In practice
-this means that continuation lines count as well when calculating the
-relative number of a line.
-
-Lisp programs can disable display of a line number of a particular
-buffer line by putting the display-line-numbers-disable text property
-or overlay property on the first visible character of that line.")
-
-(defgroup display-line-numbers nil "Display line number preferences"
- :group 'emacs)
-
-;;;###autoload
-(defcustom display-line-numbers-type t
-  "The default type of line numbers to use in `display-line-numbers-mode'.
-See `display-line-numbers' for value options."
-  :type '(choice (const :tag "Relative line numbers" relative)
-                 (const :tag "Relative visual line numbers" visual)
-                 (other :tag "Absolute line numbers" t)))
-
-;;;###autoload
-(defcustom display-line-numbers-grow-only nil
-  "If non-nil, do not shrink line number width."
-  :type 'boolean)
-
-;;;###autoload
-(defcustom display-line-numbers-width-start nil
-  "If non-nil, count number of lines to use for line number width.
-When `display-line-numbers-mode' is turned on,
-`display-line-numbers-width' is set to the minimum width necessary
-to display all line numbers in the buffer."
-  :type 'boolean)
-
-;;;###autoload
-(defun line-number-display-width (&optional _)
-  "Return the width used for displaying line numbers in the
-selected window."
-  (length (save-excursion (goto-char (point-max))
-                          (format-mode-line "%l"))))
-
-(defun display-line-numbers-update-width ()
-  "Prevent the line number width from shrinking."
-  (let ((width (line-number-display-width)))
-    (when (> width (or display-line-numbers-width 1))
-      (setq display-line-numbers-width width))))
-
-;;;###autoload
-(define-minor-mode display-line-numbers-mode
-  "Toggle display of line numbers in the buffer.
-This uses `display-line-numbers' internally.
-
-To change the type of line numbers displayed by default,
-customize `display-line-numbers-type'.  To change the type while
-the mode is on, set `display-line-numbers' directly."
-  :lighter nil
-  (cond ((null display-line-numbers-type))
-        ((eq display-line-numbers-type 'relative)
-         (if display-line-numbers-mode
-             (nlinum-relative-off)
-           (nlinum-relative-on)))
-        ((nlinum-mode (if display-line-numbers-mode +1 -1)))))
-
-(defun display-line-numbers--turn-on ()
-  "Turn on `display-line-numbers-mode'."
-  (unless (or (minibufferp)
-              ;; taken from linum.el
-              (and (daemonp) (null (frame-parameter nil 'client))))
-    (display-line-numbers-mode)))
-
-;;;###autoload
-(define-globalized-minor-mode global-display-line-numbers-mode
-  display-line-numbers-mode display-line-numbers--turn-on)

core/autoload/projects.el

@@ -117,8 +117,7 @@ If DIR is not a project, it will be indexed (but not cached)."
               #'projectile-find-file)))
           ((fboundp 'counsel-file-jump) ; ivy only
            (call-interactively #'counsel-file-jump))
-          ((and (fboundp 'project-find-file-in) ; emacs 26.1+ only
-                (project-current))
+          ((project-current)
            (project-find-file-in nil (list default-directory) nil))
           ((fboundp 'helm-find-files)
            (call-interactively #'helm-find-files))

core/autoload/ui.el

@@ -72,21 +72,14 @@ visual-line-mode is on, this skips relative and uses visual instead.
 See `display-line-numbers' for what these values mean."
   (interactive)
   (defvar doom--line-number-style display-line-numbers-type)
-    ;; DEPRECATED
-  (let* ((styles `(t ,(if (and EMACS26+ visual-line-mode) 'visual 'relative) nil))
+  (let* ((styles `(t ,(if visual-line-mode 'visual 'relative) nil))
          (order (cons display-line-numbers-type (remq display-line-numbers-type styles)))
          (queue (memq doom--line-number-style order))
          (next (if (= (length queue) 1)
                    (car order)
                  (car (cdr queue)))))
     (setq doom--line-number-style next)
-    ;; DEPRECATED
-    (if EMACS26+
-        (setq display-line-numbers next)
-      (pcase next
-        (`t (nlinum-relative-off) (nlinum-mode +1))
-        (`relative (nlinum-relative-on))
-        (`nil (nlinum-mode -1))))
+    (setq display-line-numbers next)
     (message "Switched to %s line numbers"
              (pcase next
                (`t "normal")