Clean up flymake.el

* lisp/progmodes/flymake.el (flymake, flymake-error-bitmap)
(flymake-warning-bitmap, flymake-fringe-indicator-position)
(flymake-compilation-prevents-syntax-check)
(flymake-start-syntax-check-on-newline)
(flymake-no-changes-timeout, flymake-gui-warnings-enabled)
(flymake-start-syntax-check-on-find-file, flymake-log-level)
(flymake-xml-program, flymake-master-file-dirs)
(flymake-master-file-count-limit)
(flymake-allowed-file-name-masks): Relocate.
(flymake-makehash, flymake-float-time)
(flymake-replace-regexp-in-string, flymake-split-string)
(flymake-get-temp-dir): Remove.
(flymake-popup-menu, flymake-nop, flymake-make-xemacs-menu)
(flymake-current-row, flymake-selected-frame)
(flymake-get-point-pixel-pos): Remove xemacs compatibity and
related functions.

Fixes: debbugs:16077

1 files changed, 188 insertions, 347 deletions

diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index ab86b83f7bf..48ff486a9e5 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -1,9 +1,9 @@
-;;; flymake.el --- a universal on-the-fly syntax checker
+;;; flymake.el --- a universal on-the-fly syntax checker  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2003-2013 Free Software Foundation, Inc.
 
 ;; Author:  Pavel Kobyakov <pk_at_work@yahoo.com>
-;; Maintainer: Pavel Kobyakov <pk_at_work@yahoo.com>
+;; Maintainer: Leo Liu <sdl.web@gmail.com>
 ;; Version: 0.3
 ;; Keywords: c languages tools
 
@@ -24,9 +24,9 @@
 
 ;;; Commentary:
 ;;
-;; Flymake is a minor Emacs mode performing on-the-fly syntax
-;; checks using the external syntax check tool (for C/C++ this
-;; is usually the compiler)
+;; Flymake is a minor Emacs mode performing on-the-fly syntax checks
+;; using the external syntax check tool (for C/C++ this is usually the
+;; compiler).
 
 ;;; Bugs/todo:
 
@@ -36,77 +36,161 @@
 ;;; Code:
 
 (eval-when-compile (require 'cl-lib))
-(if (featurep 'xemacs) (require 'overlay))
 
-(defvar flymake-is-running nil
+(defgroup flymake nil
+  "Universal on-the-fly syntax checker."
+  :version "23.1"
+  :group 'tools)
+
+(defcustom flymake-error-bitmap '(exclamation-mark error)
+  "Bitmap (a symbol) used in the fringe for indicating errors.
+The value may also be a list of two elements where the second
+element specifies the face for the bitmap.  For possible bitmap
+symbols, see `fringe-bitmaps'.  See also `flymake-warning-bitmap'.
+
+The option `flymake-fringe-indicator-position' controls how and where
+this is used."
+  :group 'flymake
+  :version "24.3"
+  :type '(choice (symbol :tag "Bitmap")
+                 (list :tag "Bitmap and face"
+                       (symbol :tag "Bitmap")
+                       (face :tag "Face"))))
+
+(defcustom flymake-warning-bitmap 'question-mark
+  "Bitmap (a symbol) used in the fringe for indicating warnings.
+The value may also be a list of two elements where the second
+element specifies the face for the bitmap.  For possible bitmap
+symbols, see `fringe-bitmaps'.  See also `flymake-error-bitmap'.
+
+The option `flymake-fringe-indicator-position' controls how and where
+this is used."
+  :group 'flymake
+  :version "24.3"
+  :type '(choice (symbol :tag "Bitmap")
+                 (list :tag "Bitmap and face"
+                       (symbol :tag "Bitmap")
+                       (face :tag "Face"))))
+
+(defcustom flymake-fringe-indicator-position 'left-fringe
+  "The position to put flymake fringe indicator.
+The value can be nil (do not use indicators), `left-fringe' or `right-fringe'.
+See `flymake-error-bitmap' and `flymake-warning-bitmap'."
+  :group 'flymake
+  :version "24.3"
+  :type '(choice (const left-fringe)
+		 (const right-fringe)
+		 (const :tag "No fringe indicators" nil)))
+
+(defcustom flymake-compilation-prevents-syntax-check t
+  "If non-nil, don't start syntax check if compilation is running."
+  :group 'flymake
+  :type 'boolean)
+
+(defcustom flymake-start-syntax-check-on-newline t
+  "Start syntax check if newline char was added/removed from the buffer."
+  :group 'flymake
+  :type 'boolean)
+
+(defcustom flymake-no-changes-timeout 0.5
+  "Time to wait after last change before starting compilation."
+  :group 'flymake
+  :type 'number)
+
+(defcustom flymake-gui-warnings-enabled t
+  "Enables/disables GUI warnings."
+  :group 'flymake
+  :type 'boolean)
+
+(defcustom flymake-start-syntax-check-on-find-file t
+  "Start syntax check on find file."
+  :group 'flymake
+  :type 'boolean)
+
+(defcustom flymake-log-level -1
+  "Logging level, only messages with level lower or equal will be logged.
+-1 = NONE, 0 = ERROR, 1 = WARNING, 2 = INFO, 3 = DEBUG"
+  :group 'flymake
+  :type 'integer)
+
+(defcustom flymake-xml-program
+  (if (executable-find "xmlstarlet") "xmlstarlet" "xml")
+  "Program to use for XML validation."
+  :type 'file
+  :group 'flymake
+  :version "24.4")
+
+(defcustom flymake-master-file-dirs '("." "./src" "./UnitTest")
+  "Dirs where to look for master files."
+  :group 'flymake
+  :type '(repeat (string)))
+
+(defcustom flymake-master-file-count-limit 32
+  "Max number of master files to check."
+  :group 'flymake
+  :type 'integer)
+
+(defcustom flymake-allowed-file-name-masks
+  '(("\\.\\(?:c\\(?:pp\\|xx\\|\\+\\+\\)?\\|CC\\)\\'" flymake-simple-make-init)
+    ("\\.xml\\'" flymake-xml-init)
+    ("\\.html?\\'" flymake-xml-init)
+    ("\\.cs\\'" flymake-simple-make-init)
+    ("\\.p[ml]\\'" flymake-perl-init)
+    ("\\.php[345]?\\'" flymake-php-init)
+    ("\\.h\\'" flymake-master-make-header-init flymake-master-cleanup)
+    ("\\.java\\'" flymake-simple-make-java-init flymake-simple-java-cleanup)
+    ("[0-9]+\\.tex\\'" flymake-master-tex-init flymake-master-cleanup)
+    ("\\.tex\\'" flymake-simple-tex-init)
+    ("\\.idl\\'" flymake-simple-make-init)
+    ;; ("\\.cpp\\'" 1)
+    ;; ("\\.java\\'" 3)
+    ;; ("\\.h\\'" 2 ("\\.cpp\\'" "\\.c\\'")
+    ;; ("[ \t]*#[ \t]*include[ \t]*\"\\([\w0-9/\\_\.]*[/\\]*\\)\\(%s\\)\"" 1 2))
+    ;; ("\\.idl\\'" 1)
+    ;; ("\\.odl\\'" 1)
+    ;; ("[0-9]+\\.tex\\'" 2 ("\\.tex\\'")
+    ;; ("[ \t]*\\input[ \t]*{\\(.*\\)\\(%s\\)}" 1 2 ))
+    ;; ("\\.tex\\'" 1)
+    )
+  "Files syntax checking is allowed for.
+This is an alist with elements of the form:
+  REGEXP INIT [CLEANUP [NAME]]
+REGEXP is a regular expression that matches a file name.
+INIT is the init function to use.
+CLEANUP is the cleanup function to use, default `flymake-simple-cleanup'.
+NAME is the file name function to use, default `flymake-get-real-file-name'."
+  :group 'flymake
+  :type '(alist :key-type (regexp :tag "File regexp")
+                :value-type
+                (list :tag "Handler functions"
+                      (function :tag "Init function")
+                      (choice :tag "Cleanup function"
+                              (const :tag "flymake-simple-cleanup" nil)
+                              function)
+                      (choice :tag "Name function"
+                              (const :tag "flymake-get-real-file-name" nil)
+                              function))))
+
+(defvar-local flymake-is-running nil
   "If t, flymake syntax check process is running for the current buffer.")
-(make-variable-buffer-local 'flymake-is-running)
 
-(defvar flymake-timer nil
+(defvar-local flymake-timer nil
   "Timer for starting syntax check.")
-(make-variable-buffer-local 'flymake-timer)
 
-(defvar flymake-last-change-time nil
+(defvar-local flymake-last-change-time nil
   "Time of last buffer change.")
-(make-variable-buffer-local 'flymake-last-change-time)
 
-(defvar flymake-check-start-time nil
+(defvar-local flymake-check-start-time nil
   "Time at which syntax check was started.")
-(make-variable-buffer-local 'flymake-check-start-time)
 
-(defvar flymake-check-was-interrupted nil
+(defvar-local flymake-check-was-interrupted nil
   "Non-nil if syntax check was killed by `flymake-compile'.")
-(make-variable-buffer-local 'flymake-check-was-interrupted)
 
-(defvar flymake-err-info nil
+(defvar-local flymake-err-info nil
   "Sorted list of line numbers and lists of err info in the form (file, err-text).")
-(make-variable-buffer-local 'flymake-err-info)
 
-(defvar flymake-new-err-info nil
+(defvar-local flymake-new-err-info nil
   "Same as `flymake-err-info', effective when a syntax check is in progress.")
-(make-variable-buffer-local 'flymake-new-err-info)
-
-;;;; [[ cross-emacs compatibility routines
-(defsubst flymake-makehash (&optional test)
-  "Create and return a new hash table using TEST to compare keys.
-It uses the function `make-hash-table' to make a hash-table if
-you use GNU Emacs, otherwise it uses `makehash'."
-  (if (fboundp 'make-hash-table)
-      (if test (make-hash-table :test test) (make-hash-table))
-    (with-no-warnings
-      (makehash test))))
-
-(defalias 'flymake-float-time
-  (if (fboundp 'float-time)
-      'float-time
-    (if (featurep 'xemacs)
-	(lambda ()
-	  (multiple-value-bind (s0 s1 s2) (values-list (current-time))
-	    (+ (* (float (ash 1 16)) s0) (float s1) (* 0.0000001 s2)))))))
-
-(defalias 'flymake-replace-regexp-in-string
-  (if (eval-when-compile (fboundp 'replace-regexp-in-string))
-      'replace-regexp-in-string
-    (lambda (regexp rep str)
-      (replace-in-string str regexp rep))))
-
-(defalias 'flymake-split-string
-  (if (condition-case nil (equal (split-string " bc " " " t) '("bc"))
-        (error nil))
-      (lambda (str pattern) (split-string str pattern t))
-    (lambda (str pattern)
-      "Split STR into a list of substrings bounded by PATTERN.
-Zero-length substrings at the beginning and end of the list are omitted."
-      (let ((split (split-string str pattern)))
-        (while (equal (car split) "") (setq split (cdr split)))
-        (setq split (nreverse split))
-        (while (equal (car split) "") (setq split (cdr split)))
-        (nreverse split)))))
-
-(defalias 'flymake-get-temp-dir
-  (if (fboundp 'temp-directory)
-      'temp-directory
-    (lambda () temporary-file-directory)))
 
 (defun flymake-posn-at-point-as-event (&optional position window dx dy)
   "Return pixel position of top left corner of glyph at POSITION.
@@ -120,12 +204,11 @@ POSITION and WINDOW default to the position of point in the
 selected window.
 
 DX and DY specify optional offsets from the top left of the glyph."
-  (unless window (setq window (selected-window)))
-  (unless position (setq position (window-point window)))
-  (unless dx (setq dx 0))
-  (unless dy (setq dy 0))
-
-  (let* ((pos (posn-at-point position window))
+  (let* ((window (or window (selected-window)))
+	 (position (or position (window-point window)))
+	 (dx (or dx 0))
+	 (dy (or dy 0))
+	 (pos (posn-at-point position window))
          (x-y (posn-x-y pos))
          (edges (window-inside-pixel-edges window))
          (win-x-y (window-pixel-edges window)))
@@ -135,25 +218,16 @@ DX and DY specify optional offsets from the top left of the glyph."
                   (+ (cdr x-y) (cadr edges) (- (cadr win-x-y)) dy)))
     (list 'mouse-1 pos)))
 
+;;; XXX: get rid of the following two functions
+
 (defun flymake-popup-menu (menu-data)
   "Pop up the flymake menu at point, using the data MENU-DATA.
 POS is a list of the form ((X Y) WINDOW), where X and Y are
 pixels positions from the top left corner of WINDOW's frame.
 MENU-DATA is a list of error and warning messages returned by
 `flymake-make-err-menu-data'."
-  (if (featurep 'xemacs)
-      (let* ((pos         (flymake-get-point-pixel-pos))
-             (x-pos       (nth 0 pos))
-	     (y-pos       (nth 1 pos))
-	     (fake-event-props  '(button 1 x 1 y 1)))
-	(setq fake-event-props (plist-put fake-event-props 'x x-pos))
-	(setq fake-event-props (plist-put fake-event-props 'y y-pos))
-	(popup-menu (flymake-make-xemacs-menu menu-data)
-                    (make-event 'button-press fake-event-props)))
-    (x-popup-menu (if (eval-when-compile (fboundp 'posn-at-point))
-                      (flymake-posn-at-point-as-event)
-                    (list (flymake-get-point-pixel-pos) (selected-window)))
-                  (flymake-make-emacs-menu menu-data))))
+  (x-popup-menu (flymake-posn-at-point-as-event)
+		(flymake-make-emacs-menu menu-data)))
 
 (defun flymake-make-emacs-menu (menu-data)
   "Return a menu specifier using MENU-DATA.
@@ -167,72 +241,6 @@ See `x-popup-menu' for the menu specifier format."
                                  menu-items)))
     (list menu-title (cons "" menu-commands))))
 
-(if (featurep 'xemacs) (progn
-
-(defun flymake-nop ()
-  "Do nothing."
-  nil)
-
-(defun flymake-make-xemacs-menu (menu-data)
-  "Return a menu specifier using MENU-DATA."
-  (let* ((menu-title     (nth 0 menu-data))
-	 (menu-items     (nth 1 menu-data))
-	 (menu-commands  nil))
-    (setq menu-commands (mapcar (lambda (foo)
-				  (vector (nth 0 foo) (or (nth 1 foo) '(flymake-nop)) t))
-				menu-items))
-    (cons menu-title menu-commands)))
-
-)) ;; xemacs
-
-(unless (eval-when-compile (fboundp 'posn-at-point))
-
-(defun flymake-current-row ()
-  "Return current row number in current frame."
-  (if (fboundp 'window-edges)
-      (+ (car (cdr (window-edges))) (count-lines (window-start) (point)))
-    (count-lines (window-start) (point))))
-
-(defun flymake-selected-frame ()
-  "Return the frame that is now selected."
-  (if (fboundp 'window-edges)
-      (selected-frame)
-    (selected-window)))
-
-(defun flymake-get-point-pixel-pos ()
-  "Return point position in pixels: (x, y)."
-  (let ((mouse-pos  (mouse-position))
-	(pixel-pos  nil)
-	(ret        nil))
-    (if (car (cdr mouse-pos))
-	(progn
-	  (set-mouse-position (flymake-selected-frame) (current-column) (flymake-current-row))
-	  (setq pixel-pos (mouse-pixel-position))
-	  (set-mouse-position (car mouse-pos) (car (cdr mouse-pos)) (cdr (cdr mouse-pos)))
-	  (setq ret (list (car (cdr pixel-pos)) (cdr (cdr pixel-pos)))))
-      (progn
-	(setq ret '(0 0))))
-    (flymake-log 3 "mouse pos is %s" ret)
-    ret))
-
-) ;; End of (unless (fboundp 'posn-at-point)
-
-;;;; ]]
-
-(defcustom flymake-log-level -1
-  "Logging level, only messages with level lower or equal will be logged.
--1 = NONE, 0 = ERROR, 1 = WARNING, 2 = INFO, 3 = DEBUG"
-  :group 'flymake
-  :type 'integer)
-
-
-;; (defcustom flymake-log-file-name "~/flymake.log"
-;;   "Where to put the flymake log if logging is enabled.
-;; 
-;;    See `flymake-log-level' if you want to control what is logged."
-;;   :group 'flymake
-;;   :type 'string)
-
 (defun flymake-log (level text &rest args)
   "Log a message at level LEVEL.
 If LEVEL is higher than `flymake-log-level', the message is
@@ -241,13 +249,7 @@ TEXT is a format control string, and the remaining arguments ARGS
 are the string substitutions (see the function `format')."
   (if (<= level flymake-log-level)
       (let* ((msg (apply 'format text args)))
-	(message "%s" msg)
-	;;(with-temp-buffer
-	;;    (insert msg)
-	;;   (insert "\n")
-	;;   (flymake-save-buffer-in-file "~/flymake.log")  ; make log file name customizable
-	;;)
-	)))
+	(message "%s" msg))))
 
 (defun flymake-ins-after (list pos val)
   "Insert VAL into LIST after position POS.
@@ -266,61 +268,7 @@ POS counts from zero."
 (defvar flymake-processes nil
   "List of currently active flymake processes.")
 
-(defvar flymake-output-residual nil)
-(make-variable-buffer-local 'flymake-output-residual)
-
-(defgroup flymake nil
-  "Universal on-the-fly syntax checker."
-  :version "23.1"
-  :group 'tools)
-
-(defcustom flymake-xml-program
-  (if (executable-find "xmlstarlet") "xmlstarlet" "xml")
-  "Program to use for XML validation."
-  :type 'file
-  :group 'flymake
-  :version "24.4")
-
-(defcustom flymake-allowed-file-name-masks
-  '(("\\.\\(?:c\\(?:pp\\|xx\\|\\+\\+\\)?\\|CC\\)\\'" flymake-simple-make-init)
-    ("\\.xml\\'" flymake-xml-init)
-    ("\\.html?\\'" flymake-xml-init)
-    ("\\.cs\\'" flymake-simple-make-init)
-    ("\\.p[ml]\\'" flymake-perl-init)
-    ("\\.php[345]?\\'" flymake-php-init)
-    ("\\.h\\'" flymake-master-make-header-init flymake-master-cleanup)
-    ("\\.java\\'" flymake-simple-make-java-init flymake-simple-java-cleanup)
-    ("[0-9]+\\.tex\\'" flymake-master-tex-init flymake-master-cleanup)
-    ("\\.tex\\'" flymake-simple-tex-init)
-    ("\\.idl\\'" flymake-simple-make-init)
-    ;; ("\\.cpp\\'" 1)
-    ;; ("\\.java\\'" 3)
-    ;; ("\\.h\\'" 2 ("\\.cpp\\'" "\\.c\\'")
-    ;; ("[ \t]*#[ \t]*include[ \t]*\"\\([\w0-9/\\_\.]*[/\\]*\\)\\(%s\\)\"" 1 2))
-    ;; ("\\.idl\\'" 1)
-    ;; ("\\.odl\\'" 1)
-    ;; ("[0-9]+\\.tex\\'" 2 ("\\.tex\\'")
-    ;; ("[ \t]*\\input[ \t]*{\\(.*\\)\\(%s\\)}" 1 2 ))
-    ;; ("\\.tex\\'" 1)
-    )
-  "Files syntax checking is allowed for.
-This is an alist with elements of the form:
-  REGEXP INIT [CLEANUP [NAME]]
-REGEXP is a regular expression that matches a file name.
-INIT is the init function to use.
-CLEANUP is the cleanup function to use, default `flymake-simple-cleanup'.
-NAME is the file name function to use, default `flymake-get-real-file-name'."
-  :group 'flymake
-  :type '(alist :key-type (regexp :tag "File regexp")
-                :value-type
-                (list :tag "Handler functions"
-                      (function :tag "Init function")
-                      (choice :tag "Cleanup function"
-                              (const :tag "flymake-simple-cleanup" nil)
-                              function)
-                      (choice :tag "Name function"
-                              (const :tag "flymake-get-real-file-name" nil)
-                              function))))
+(defvar-local flymake-output-residual nil)
 
 (defun flymake-get-file-name-mode-and-masks (file-name)
   "Return the corresponding entry from `flymake-allowed-file-name-masks'."
@@ -356,7 +304,7 @@ Return nil if we cannot, non-nil if we can."
   (or (nth 2 (flymake-get-file-name-mode-and-masks file-name))
       'flymake-get-real-file-name))
 
-(defvar flymake-find-buildfile-cache (flymake-makehash 'equal))
+(defvar flymake-find-buildfile-cache (make-hash-table :test #'equal))
 
 (defun flymake-get-buildfile-from-cache (dir-name)
   "Look up DIR-NAME in cache and return its associated value.
@@ -400,16 +348,6 @@ Return t if so, nil if not."
   (equal (flymake-fix-file-name file-name-one)
 	 (flymake-fix-file-name file-name-two)))
 
-(defcustom flymake-master-file-dirs '("." "./src" "./UnitTest")
-  "Dirs where to look for master files."
-  :group 'flymake
-  :type '(repeat (string)))
-
-(defcustom flymake-master-file-count-limit 32
-  "Max number of master files to check."
-  :group 'flymake
-  :type 'integer)
-
 ;; This is bound dynamically to pass a parameter to a sort predicate below
 (defvar flymake-included-file-name)
 
@@ -456,12 +394,9 @@ to the beginning of the list (File.h -> File.cpp moved to top)."
 	      (file-name-base file-one))
        (not (equal file-one file-two))))
 
-(defcustom flymake-check-file-limit 8192
+(defvar flymake-check-file-limit 8192
   "Maximum number of chars to look at when checking possible master file.
-Nil means search the entire file."
-  :group 'flymake
-  :type '(choice (const :tag "No limit" nil)
-                 (integer :tag "Characters")))
+Nil means search the entire file.")
 
 (defun flymake-check-patch-master-file-buffer
        (master-file-temp-buffer
@@ -537,6 +472,7 @@ instead of reading master file from disk."
       (flymake-log 2 "found master file %s" master-file-name))
     found))
 
+;;; XXX: remove
 (defun flymake-replace-region (beg end rep)
   "Replace text in BUFFER in region (BEG END) with REP."
   (save-excursion
@@ -681,7 +617,7 @@ It's flymake process filter."
   (setq flymake-new-err-info nil)
   (setq flymake-err-info
         (flymake-fix-line-numbers
-         flymake-err-info 1 (flymake-count-lines)))
+         flymake-err-info 1 (count-lines (point-min) (point-max))))
   (flymake-delete-own-overlays)
   (flymake-highlight-err-lines flymake-err-info)
   (let (err-count warn-count)
@@ -689,7 +625,7 @@ It's flymake process filter."
     (setq warn-count  (flymake-get-err-count flymake-err-info "w"))
     (flymake-log 2 "%s: %d error(s), %d warning(s) in %.2f second(s)"
 		 (buffer-name) err-count warn-count
-		 (- (flymake-float-time) flymake-check-start-time))
+		 (- (float-time) flymake-check-start-time))
     (setq flymake-check-start-time nil)
 
     (if (and (equal 0 err-count) (equal 0 warn-count))
@@ -810,46 +746,6 @@ line number outside the file being compiled."
   "Determine whether overlay OV was created by flymake."
   (and (overlayp ov) (overlay-get ov 'flymake-overlay)))
 
-(defcustom flymake-error-bitmap '(exclamation-mark error)
-  "Bitmap (a symbol) used in the fringe for indicating errors.
-The value may also be a list of two elements where the second
-element specifies the face for the bitmap.  For possible bitmap
-symbols, see `fringe-bitmaps'.  See also `flymake-warning-bitmap'.
-
-The option `flymake-fringe-indicator-position' controls how and where
-this is used."
-  :group 'flymake
-  :version "24.3"
-  :type '(choice (symbol :tag "Bitmap")
-                 (list :tag "Bitmap and face"
-                       (symbol :tag "Bitmap")
-                       (face :tag "Face"))))
-
-(defcustom flymake-warning-bitmap 'question-mark
-  "Bitmap (a symbol) used in the fringe for indicating warnings.
-The value may also be a list of two elements where the second
-element specifies the face for the bitmap.  For possible bitmap
-symbols, see `fringe-bitmaps'.  See also `flymake-error-bitmap'.
-
-The option `flymake-fringe-indicator-position' controls how and where
-this is used."
-  :group 'flymake
-  :version "24.3"
-  :type '(choice (symbol :tag "Bitmap")
-                 (list :tag "Bitmap and face"
-                       (symbol :tag "Bitmap")
-                       (face :tag "Face"))))
-
-(defcustom flymake-fringe-indicator-position 'left-fringe
-  "The position to put flymake fringe indicator.
-The value can be nil (do not use indicators), `left-fringe' or `right-fringe'.
-See `flymake-error-bitmap' and `flymake-warning-bitmap'."
-  :group 'flymake
-  :version "24.3"
-  :type '(choice (const left-fringe)
-		 (const right-fringe)
-		 (const :tag "No fringe indicators" nil)))
-
 (defun flymake-make-overlay (beg end tooltip-text face bitmap mouse-face)
   "Allocate a flymake overlay in range BEG and END."
   (when (not (flymake-region-has-flymake-overlays beg end))
@@ -978,7 +874,7 @@ Perhaps use text from LINE-ERR-INFO-LIST to enhance highlighting."
 Return last one as residual if it does not end with newline char.
 Returns ((LINES) RESIDUAL)."
   (when (and output (> (length output) 0))
-    (let* ((lines (flymake-split-string output "[\n\r]+"))
+    (let* ((lines (split-string output "[\n\r]+" t))
 	   (complete (equal "\n" (char-to-string (aref output (1- (length output))))))
 	   (residual nil))
       (when (not complete)
@@ -1163,26 +1059,24 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
 				  (shell-quote-argument basedir)
 				  " DUMPVARS=INCLUDE_DIRS dumpvars"))
 	   (output        (shell-command-to-string command-line))
-	   (lines         (flymake-split-string output "\n"))
+	   (lines         (split-string output "\n" t))
 	   (count         (length lines))
 	   (idx           0)
 	   (inc-dirs      nil))
       (while (and (< idx count) (not (string-match "^INCLUDE_DIRS=.*" (nth idx lines))))
 	(setq idx (1+ idx)))
       (when (< idx count)
-	(let* ((inc-lines  (flymake-split-string (nth idx lines) " *-I"))
+	(let* ((inc-lines  (split-string (nth idx lines) " *-I" t))
 	       (inc-count  (length inc-lines)))
 	  (while (> inc-count 0)
 	    (when (not (string-match "^INCLUDE_DIRS=.*" (nth (1- inc-count) inc-lines)))
-	      (push (flymake-replace-regexp-in-string "\"" "" (nth (1- inc-count) inc-lines)) inc-dirs))
+	      (push (replace-regexp-in-string "\"" "" (nth (1- inc-count) inc-lines)) inc-dirs))
 	    (setq inc-count (1- inc-count)))))
       (flymake-add-project-include-dirs-to-cache basedir inc-dirs)
       inc-dirs)))
 
-(defcustom flymake-get-project-include-dirs-function 'flymake-get-project-include-dirs-imp
-  "Function used to get project include dirs, one parameter: basedir name."
-  :group 'flymake
-  :type 'function)
+(defvar flymake-get-project-include-dirs-function #'flymake-get-project-include-dirs-imp
+  "Function used to get project include dirs, one parameter: basedir name.")
 
 (defun flymake-get-project-include-dirs (basedir)
   (funcall flymake-get-project-include-dirs-function basedir))
@@ -1190,9 +1084,9 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
 (defun flymake-get-system-include-dirs ()
   "System include dirs - from the 'INCLUDE' env setting."
   (let* ((includes (getenv "INCLUDE")))
-    (if includes (flymake-split-string includes path-separator) nil)))
+    (if includes (split-string includes path-separator t) nil)))
 
-(defvar flymake-project-include-dirs-cache (flymake-makehash 'equal))
+(defvar flymake-project-include-dirs-cache (make-hash-table :test #'equal))
 
 (defun flymake-get-project-include-dirs-from-cache (base-dir)
   (gethash base-dir flymake-project-include-dirs-cache))
@@ -1232,11 +1126,6 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
     (error
      (flymake-log 1 "Failed to delete dir %s, error ignored" dir-name))))
 
-(defcustom flymake-compilation-prevents-syntax-check t
-  "If non-nil, don't start syntax check if compilation is running."
-  :group 'flymake
-  :type 'boolean)
-
 (defun flymake-start-syntax-check ()
   "Start syntax checking for current buffer."
   (interactive)
@@ -1280,7 +1169,7 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
 
         (setq flymake-is-running t)
         (setq flymake-last-change-time nil)
-        (setq flymake-check-start-time (flymake-float-time))
+        (setq flymake-check-start-time (float-time))
 
         (flymake-report-status nil "*")
         (flymake-log 2 "started process %d, command=%s, dir=%s"
@@ -1321,36 +1210,23 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
   (flymake-stop-all-syntax-checks)
   (call-interactively 'compile))
 
-(defcustom flymake-no-changes-timeout 0.5
-  "Time to wait after last change before starting compilation."
-  :group 'flymake
-  :type 'number)
-
 (defun flymake-on-timer-event (buffer)
   "Start a syntax check for buffer BUFFER if necessary."
   (when (buffer-live-p buffer)
     (with-current-buffer buffer
       (when (and (not flymake-is-running)
 		 flymake-last-change-time
-		 (> (- (flymake-float-time) flymake-last-change-time)
+		 (> (- (float-time) flymake-last-change-time)
                     flymake-no-changes-timeout))
 
 	(setq flymake-last-change-time nil)
 	(flymake-log 3 "starting syntax check as more than 1 second passed since last change")
 	(flymake-start-syntax-check)))))
 
-(defun flymake-current-line-no ()
-  "Return number of current line in current buffer."
-  (count-lines (point-min) (if (eobp) (point) (1+ (point)))))
-
-(defun flymake-count-lines ()
-  "Return number of lines in buffer BUFFER."
-  (count-lines (point-min) (point-max)))
-
 (defun flymake-display-err-menu-for-current-line ()
   "Display a menu with errors/warnings for current line if it has errors and/or warnings."
   (interactive)
-  (let* ((line-no             (flymake-current-line-no))
+  (let* ((line-no             (line-number-at-pos))
 	 (line-err-info-list  (nth 0 (flymake-find-err-info flymake-err-info line-no)))
 	 (menu-data           (flymake-make-err-menu-data line-no line-err-info-list))
 	 (choice              nil))
@@ -1396,17 +1272,9 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
     (forward-line (1- line))))
 
 ;; flymake minor mode declarations
-(defvar flymake-mode-line nil)
-
-(make-variable-buffer-local 'flymake-mode-line)
-
-(defvar flymake-mode-line-e-w nil)
-
-(make-variable-buffer-local 'flymake-mode-line-e-w)
-
-(defvar flymake-mode-line-status nil)
-
-(make-variable-buffer-local 'flymake-mode-line-status)
+(defvar-local flymake-mode-line nil)
+(defvar-local flymake-mode-line-e-w nil)
+(defvar-local flymake-mode-line-status nil)
 
 (defun flymake-report-status (e-w &optional status)
   "Show status in mode line."
@@ -1425,11 +1293,6 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
   "Display a warning to user."
   (message-box warning))
 
-(defcustom flymake-gui-warnings-enabled t
-  "Enables/disables GUI warnings."
-  :group 'flymake
-  :type 'boolean)
-
 (defun flymake-report-fatal-status (status warning)
   "Display a warning and switch flymake mode off."
   (when flymake-gui-warnings-enabled
@@ -1439,17 +1302,8 @@ For the format of LINE-ERR-INFO, see `flymake-ler-make-ler'."
   (flymake-log 0 "switched OFF Flymake mode for buffer %s due to fatal status %s, warning %s"
                (buffer-name) status warning))
 
-(defcustom flymake-start-syntax-check-on-find-file t
-  "Start syntax check on find file."
-  :group 'flymake
-  :type 'boolean)
-
 ;;;###autoload
-(define-minor-mode flymake-mode
-  "Toggle on-the-fly syntax checking.
-With a prefix argument ARG, enable the mode if ARG is positive,
-and disable it otherwise.  If called from Lisp, enable the mode
-if ARG is omitted or nil."
+(define-minor-mode flymake-mode nil
   :group 'flymake :lighter flymake-mode-line
   (cond
 
@@ -1505,19 +1359,14 @@ if ARG is omitted or nil."
   (flymake-mode 0)
   (flymake-log 1 "flymake mode turned OFF for buffer %s" (buffer-name)))
 
-(defcustom flymake-start-syntax-check-on-newline t
-  "Start syntax check if newline char was added/removed from the buffer."
-  :group 'flymake
-  :type 'boolean)
-
 (defun flymake-after-change-function (start stop _len)
   "Start syntax check for current buffer if it isn't already running."
-  ;;+(flymake-log 0 "setting change time to %s" (flymake-float-time))
+  ;;+(flymake-log 0 "setting change time to %s" (float-time))
   (let((new-text (buffer-substring start stop)))
     (when (and flymake-start-syntax-check-on-newline (equal new-text "\n"))
       (flymake-log 3 "starting syntax check as new-line has been seen")
       (flymake-start-syntax-check))
-    (setq flymake-last-change-time (flymake-float-time))))
+    (setq flymake-last-change-time (float-time))))
 
 (defun flymake-after-save-hook ()
   (if (local-variable-p 'flymake-mode (current-buffer))	; (???) other way to determine whether flymake is active in buffer being saved?
@@ -1584,7 +1433,7 @@ if ARG is omitted or nil."
 (defun flymake-goto-next-error ()
   "Go to next error in err ring."
   (interactive)
-  (let ((line-no (flymake-get-next-err-line-no flymake-err-info (flymake-current-line-no))))
+  (let ((line-no (flymake-get-next-err-line-no flymake-err-info (line-number-at-pos))))
     (when (not line-no)
       (setq line-no (flymake-get-first-err-line-no flymake-err-info))
       (flymake-log 1 "passed end of file"))
@@ -1595,7 +1444,7 @@ if ARG is omitted or nil."
 (defun flymake-goto-prev-error ()
   "Go to previous error in err ring."
   (interactive)
-  (let ((line-no (flymake-get-prev-err-line-no flymake-err-info (flymake-current-line-no))))
+  (let ((line-no (flymake-get-prev-err-line-no flymake-err-info (line-number-at-pos))))
     (when (not line-no)
       (setq line-no (flymake-get-last-err-line-no flymake-err-info))
       (flymake-log 1 "passed beginning of file"))
@@ -1631,14 +1480,14 @@ if ARG is omitted or nil."
          ;; trying to remove the leading / of absolute file names.
 	 (slash-pos (string-match "/" dir))
 	 (temp-dir  (expand-file-name (substring dir (1+ slash-pos))
-                                      (flymake-get-temp-dir))))
+                                      temporary-file-directory)))
 
     (file-truename (expand-file-name (file-name-nondirectory file-name)
                                      temp-dir))))
 
 (defun flymake-delete-temp-directory (dir-name)
   "Attempt to delete temp dir created by `flymake-create-temp-with-folder-structure', do not fail on error."
-  (let* ((temp-dir    (flymake-get-temp-dir))
+  (let* ((temp-dir    temporary-file-directory)
 	 (suffix      (substring dir-name (1+ (length temp-dir)))))
 
     (while (> (length suffix) 0)
@@ -1648,17 +1497,10 @@ if ARG is omitted or nil."
        (file-truename (expand-file-name suffix temp-dir)))
       (setq suffix (file-name-directory suffix)))))
 
-(defvar flymake-temp-source-file-name nil)
-(make-variable-buffer-local 'flymake-temp-source-file-name)
-
-(defvar flymake-master-file-name nil)
-(make-variable-buffer-local 'flymake-master-file-name)
-
-(defvar flymake-temp-master-file-name nil)
-(make-variable-buffer-local 'flymake-temp-master-file-name)
-
-(defvar flymake-base-dir nil)
-(make-variable-buffer-local 'flymake-base-dir)
+(defvar-local flymake-temp-source-file-name nil)
+(defvar-local flymake-master-file-name nil)
+(defvar-local flymake-temp-master-file-name nil)
+(defvar-local flymake-base-dir nil)
 
 (defun flymake-init-create-temp-buffer-copy (create-temp-f)
   "Make a temporary copy of the current buffer, save its name in buffer data and return the name."
@@ -1899,5 +1741,4 @@ Use CREATE-TEMP-F for creating temp copy."
                      'flymake-create-temp-inplace))))
 
 (provide 'flymake)
-
 ;;; flymake.el ends here