Prefer symbol for eval-after-load's FILE argument

Call eval-after-load with a symbol rather than a string to avoid
potential name conflicts with files that do not provide the feature
(e.g., if a user configures speedbar in a file named "speedbar.el")

Reported-by: John Foerch <jjfoerch@gmail.com>
Ref: https://orgmode.org/list/CAEeGWGKfrV7w9qtPRpAhFtiOCH-+8_ydEe11EoMAkUkbTq1fuA@mail.gmail.com

contrib/lisp/ob-php.el

@@ -44,7 +44,7 @@
     (org-babel-eval cmd body)))
 
 ;;;###autoload
-(eval-after-load "org"
+(eval-after-load 'org
   '(add-to-list 'org-src-lang-modes '("php" . php)))
 
 (defvar org-babel-default-header-args:php '())

contrib/lisp/ob-redis.el

@@ -36,7 +36,7 @@
     ))
 
 ;;;###autoload
-(eval-after-load "org"
+(eval-after-load 'org
   '(add-to-list 'org-src-lang-modes '("redis" . redis)))
 
 (provide 'ob-redis)

contrib/lisp/ob-sclang.el

@@ -81,7 +81,7 @@
 	;; TODO: temporary can't find way to let sclang output to stdout for org-babel.
         (:output . "none")))
 
-(eval-after-load "org"
+(eval-after-load 'org
   '(progn
      (add-to-list 'org-src-lang-modes '("sclang" . sclang))))
 

contrib/lisp/org-choose.el

@@ -479,7 +479,7 @@ NEW-MARK and OLD-MARK are the text of the new and old marks."
 
 ;;; Setting it all up
 
-(eval-after-load "org"
+(eval-after-load 'org
   '(progn
      (add-to-list 'org-todo-setup-filter-hook
 		  #'org-choose-setup-filter)

lisp/org-compat.el

@@ -914,7 +914,7 @@ This also applied for speedbar access."
 	     (setq last-level level)))))
      (aref subs 1))))
 
-(eval-after-load "imenu"
+(eval-after-load 'imenu
   '(progn
      (add-hook 'imenu-after-jump-hook
 	       (lambda ()
@@ -976,7 +976,7 @@ To get rid of the restriction, use `\\[org-agenda-remove-restriction-lock]'."
 
 (defvar speedbar-file-key-map)
 (declare-function speedbar-add-supported-extension "speedbar" (extension))
-(eval-after-load "speedbar"
+(eval-after-load 'speedbar
   '(progn
      (speedbar-add-supported-extension ".org")
      (define-key speedbar-file-key-map "<" 'org-speedbar-set-agenda-restriction)
@@ -1086,7 +1086,7 @@ ELEMENT is the element at point."
        (flyspell-delete-region-overlays beg end)))
 
 (defvar flyspell-delayed-commands)
-(eval-after-load "flyspell"
+(eval-after-load 'flyspell
   '(add-to-list 'flyspell-delayed-commands 'org-self-insert-command))
 
 ;;;; Bookmark
@@ -1100,7 +1100,7 @@ ELEMENT is the element at point."
        (org-show-context 'bookmark-jump)))
 
 ;; Make `bookmark-jump' shows the jump location if it was hidden.
-(eval-after-load "bookmark"
+(eval-after-load 'bookmark
   '(if (boundp 'bookmark-after-jump-hook)
        ;; We can use the hook
        (add-hook 'bookmark-after-jump-hook 'org-bookmark-jump-unhide)
@@ -1154,13 +1154,13 @@ key."
     (local-set-key org-calendar-insert-diary-entry-key
 		   #'org-agenda-diary-entry)))
 
-(eval-after-load "calendar"
+(eval-after-load 'calendar
   '(add-hook 'calendar-mode-hook #'org--setup-calendar-bindings))
 
 ;;;; Saveplace
 
 ;; Make sure saveplace shows the location if it was hidden
-(eval-after-load "saveplace"
+(eval-after-load 'saveplace
   '(defadvice save-place-find-file-hook (after org-make-visible activate)
      "Make the position visible."
      (org-bookmark-jump-unhide)))
@@ -1168,7 +1168,7 @@ key."
 ;;;; Ecb
 
 ;; Make sure ecb shows the location if it was hidden
-(eval-after-load "ecb"
+(eval-after-load 'ecb
   '(defadvice ecb-method-clicked (after esf/org-show-context activate)
      "Make hierarchy visible when jumping into location from ECB tree buffer."
      (when (derived-mode-p 'org-mode)
@@ -1182,17 +1182,17 @@ key."
 	     (org-invisible-p))
     (org-show-context 'mark-goto)))
 
-(eval-after-load "simple"
+(eval-after-load 'simple
   '(defadvice pop-to-mark-command (after org-make-visible activate)
      "Make the point visible with `org-show-context'."
      (org-mark-jump-unhide)))
 
-(eval-after-load "simple"
+(eval-after-load 'simple
   '(defadvice exchange-point-and-mark (after org-make-visible activate)
      "Make the point visible with `org-show-context'."
      (org-mark-jump-unhide)))
 
-(eval-after-load "simple"
+(eval-after-load 'simple
   '(defadvice pop-global-mark (after org-make-visible activate)
      "Make the point visible with `org-show-context'."
      (org-mark-jump-unhide)))
@@ -1201,7 +1201,7 @@ key."
 
 ;; Make "session.el" ignore our circular variable.
 (defvar session-globals-exclude)
-(eval-after-load "session"
+(eval-after-load 'session
   '(add-to-list 'session-globals-exclude 'org-mark-ring))
 
 (provide 'org-compat)