Two out of three ain't bad

6 files changed, 323 insertions, 93 deletions

@@ -15,8 +15,10 @@ Copy from BEGIN to END using `kill-ring-save' if no argument was
 passed, or with `crux-indent-rigidly-and-copy-to-clipboard' if
 one was."
   (interactive "r\nP")
-  (call-interactively (if arg #'kill-ring-save
-                        #'crux-indent-rigidly-and-copy-to-clipboard)))
+  (call-interactively (if arg
+                          #'crux-indent-rigidly-and-copy-to-clipboard
+                        #'kill-ring-save))
+  (pulse-momentary-highlight-region begin end))
 
 (defcustom +crux-default-date-format "%c"
   "Default date format to use for `+crux-insert-date-or-time'.
@@ -40,8 +40,9 @@
 
 (defun +elfeed-update-command ()
   (interactive)
-  (let ((script (expand-file-name "~/.local/bin/elfeed")))
-    (message "[Elfeed] Updating in the background.")
+  (let ((script (expand-file-name "~/.local/bin/elfeed"))
+        (update-message-format "[Elfeed] Updating in the background...%s"))
+    (message update-message-format "")
     (setq +elfeed--update-running t)
     (elfeed-db-save)
     (advice-add 'elfeed :override #'+elfeed--update-message)
@@ -69,7 +70,7 @@
                           (lambda (a b)
                             (advice-remove 'elfeed #'+elfeed--update-message)
                             (setq +elfeed--update-running nil)
-                            (message "[Elfeed] Background update %s."
+                            (message update-message-format
                                      (string-trim b))))))
 
 (defvar +elfeed--update-timer nil "Timer for `elfeed-update-command'.")
@@ -20,6 +20,7 @@
 ;;; Code:
 
 (require 'diary-lib)
+(require 'solar)                        ; for +sunrise-sunset
 
 ;;; Define a directory and an expanding function
 
@@ -55,57 +56,6 @@ ARGS."
       (when msg
         (message "%s" msg)))))
 
-(defun +sunrise-sunset--encode (time)
-  "Encode diary-style time string into a time.
-This is stolen from `run-at-time'."
-  (let ((hhmm (diary-entry-time time))
-        (now (decode-time)))
-    (encode-time (list 0 (% hhmm 100) (/ hhmm 100)
-                       (decoded-time-day now)
-                       (decoded-time-month now)
-                       (decoded-time-year now)
-                       nil -1
-                       (decoded-time-zone now)))))
-
-(defun +sunrise-sunset (sunrise-command sunset-command &optional reset)
-  "Run SUNRISE-COMMAND at sunrise, and SUNSET-COMMAND at sunset.
-With RESET, this function will call itself with its own
-arguments.  That's really only useful within this function
-itself."
-  (let* ((times-regex (rx (* nonl)
-                          (: (any ?s ?S) "unrise") " "
-                          (group (repeat 1 2 digit) ":"
-                                 (repeat 1 2 digit)
-                                 (: (any ?a ?A ?p ?P) (any ?m ?M)))
-                          (* nonl)
-                          (: (any ?s ?S) "unset") " "
-                          (group (repeat 1 2 digit) ":"
-                                 (repeat 1 2 digit)
-                                 (: (any ?a ?A ?p ?P) (any ?m ?M)))
-                          (* nonl)))
-         (ss (+suppress-messages #'sunrise-sunset))
-         (_m (string-match times-regex ss))
-         (sunrise (match-string 1 ss))
-         (sunset (match-string 2 ss))
-         (sunrise-time (+sunrise-sunset--encode sunrise))
-         (sunset-time (+sunrise-sunset--encode sunset)))
-    (cond
-     ((time-less-p nil sunrise-time)
-      ;; If it isn't sunrise yet, it's still dark---and so we need to run the
-      ;; sunset-command.
-      (funcall sunset-command)
-      (run-at-time sunrise nil sunrise-command))
-     ((time-less-p nil sunset-time)
-      ;; If it isn't sunset yet, it's still light---so we need to run the
-      ;; sunrise-command.
-      (funcall sunrise-command)
-      (run-at-time sunset nil sunset-command))
-     (t (run-at-time "12:00am" nil sunset-command)))
-    ;; Reset everything at midnight
-    (unless reset
-      (run-at-time "12:00am" (* 60 60 24)
-                 #'+sunrise-sunset sunrise-command sunset-command t))))
-
 (defun +ensure-after-init (function)
   "Ensure FUNCTION runs after init, or now if already initialized.
 If Emacs is already started, run FUNCTION.  Otherwise, add it to
@@ -0,0 +1,240 @@
+;;; compat.el --- Thin backward-compatibility shim -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;; I use different versionso of Emacs.  Sometimes I have to copy-paste functions
+;; from newer Emacs to make my customizations work.  This is that file.
+
+;; This is probably ill-advised.
+
+;;; Code:
+
+(unless (fboundp 'keymap--compile-check)
+  (defun keymap--compile-check (&rest keys)
+    (dolist (key keys)
+      (when (or (vectorp key)
+                (and (stringp key) (not (key-valid-p key))))
+        (byte-compile-warn "Invalid `kbd' syntax: %S" key)))))
+
+(unless (fboundp 'keymap-lookup)
+  (defun keymap-lookup (keymap key &optional accept-default no-remap position)
+    "Return the binding for command KEY.
+KEY is a string that satisfies `key-valid-p'.
+
+If KEYMAP is nil, look up in the current keymaps.  If non-nil, it
+should either be a keymap or a list of keymaps, and only these
+keymap(s) will be consulted.
+
+The binding is probably a symbol with a function definition.
+
+Normally, `keymap-lookup' ignores bindings for t, which act as
+default bindings, used when nothing else in the keymap applies;
+this makes it usable as a general function for probing keymaps.
+However, if the optional second argument ACCEPT-DEFAULT is
+non-nil, `keymap-lookup' does recognize the default bindings,
+just as `read-key-sequence' does.
+
+Like the normal command loop, `keymap-lookup' will remap the
+command resulting from looking up KEY by looking up the command
+in the current keymaps.  However, if the optional third argument
+NO-REMAP is non-nil, `keymap-lookup' returns the unmapped
+command.
+
+If KEY is a key sequence initiated with the mouse, the used keymaps
+will depend on the clicked mouse position with regard to the buffer
+and possible local keymaps on strings.
+
+If the optional argument POSITION is non-nil, it specifies a mouse
+position as returned by `event-start' and `event-end', and the lookup
+occurs in the keymaps associated with it instead of KEY.  It can also
+be a number or marker, in which case the keymap properties at the
+specified buffer position instead of point are used."
+    (declare (compiler-macro (lambda (form) (keymap--compile-check key) form)))
+    (keymap--check key)
+    (when (and keymap position)
+      (error "Can't pass in both keymap and position"))
+    (if keymap
+        (let ((value (lookup-key keymap (key-parse key) accept-default)))
+          (if (and (not no-remap)
+                   (symbolp value))
+              (or (command-remapping value) value)
+            value))
+      (key-binding (kbd key) accept-default no-remap position))))
+
+(unless (fboundp 'keymap--check)
+  (defun keymap--check (key)
+    "Signal an error if KEY doesn't have a valid syntax."
+    (unless (key-valid-p key)
+      (error "%S is not a valid key definition; see `key-valid-p'" key))))
+
+(unless (fboundp 'key-valid-p)
+  (defun key-valid-p (keys)
+    "Say whether KEYS is a valid key.
+A key is a string consisting of one or more key strokes.
+The key strokes are separated by single space characters.
+
+Each key stroke is either a single character, or the name of an
+event, surrounded by angle brackets.  In addition, any key stroke
+may be preceded by one or more modifier keys.  Finally, a limited
+number of characters have a special shorthand syntax.
+
+Here's some example key sequences.
+
+  \"f\"           (the key 'f')
+  \"S o m\"       (a three key sequence of the keys 'S', 'o' and 'm')
+  \"C-c o\"       (a two key sequence of the keys 'c' with the control modifier
+                 and then the key 'o')
+  \"H-<left>\"    (the key named \"left\" with the hyper modifier)
+  \"M-RET\"       (the \"return\" key with a meta modifier)
+  \"C-M-<space>\" (the \"space\" key with both the control and meta modifiers)
+
+These are the characters that have shorthand syntax:
+NUL, RET, TAB, LFD, ESC, SPC, DEL.
+
+Modifiers have to be specified in this order:
+
+   A-C-H-M-S-s
+
+which is
+
+   Alt-Control-Hyper-Meta-Shift-super"
+    (declare (pure t) (side-effect-free t))
+    (and
+     (stringp keys)
+     (string-match-p "\\`[^ ]+\\( [^ ]+\\)*\\'" keys)
+     (save-match-data
+       (catch 'exit
+         (let ((prefixes
+                "\\(A-\\)?\\(C-\\)?\\(H-\\)?\\(M-\\)?\\(S-\\)?\\(s-\\)?")
+               (case-fold-search nil))
+           (dolist (key (split-string keys " "))
+             ;; Every key might have these modifiers, and they should be
+             ;; in this order.
+             (when (string-match (concat "\\`" prefixes) key)
+               (setq key (substring key (match-end 0))))
+             (unless (or (and (= (length key) 1)
+                              ;; Don't accept control characters as keys.
+                              (not (< (aref key 0) ?\s))
+                              ;; Don't accept Meta'd characters as keys.
+                              (or (multibyte-string-p key)
+                                  (not (<= 127 (aref key 0) 255))))
+                         (and (string-match-p "\\`<[-_A-Za-z0-9]+>\\'" key)
+                              ;; Don't allow <M-C-down>.
+                              (= (progn
+                                   (string-match
+                                    (concat "\\`<" prefixes) key)
+                                   (match-end 0))
+                                 1))
+                         (string-match-p
+                          "\\`\\(NUL\\|RET\\|TAB\\|LFD\\|ESC\\|SPC\\|DEL\\)\\'"
+                          key))
+               ;; Invalid.
+               (throw 'exit nil)))
+           t))))))
+
+(unless (fboundp 'key-parse)
+  (defun key-parse (keys)
+    "Convert KEYS to the internal Emacs key representation.
+See `kbd' for a descripion of KEYS."
+    (declare (pure t) (side-effect-free t))
+    ;; A pure function is expected to preserve the match data.
+    (save-match-data
+      (let ((case-fold-search nil)
+            (len (length keys)) ; We won't alter keys in the loop below.
+            (pos 0)
+            (res []))
+        (while (and (< pos len)
+                    (string-match "[^ \t\n\f]+" keys pos))
+          (let* ((word-beg (match-beginning 0))
+                 (word-end (match-end 0))
+                 (word (substring keys word-beg len))
+                 (times 1)
+                 key)
+            ;; Try to catch events of the form "<as df>".
+            (if (string-match "\\`<[^ <>\t\n\f][^>\t\n\f]*>" word)
+                (setq word (match-string 0 word)
+                      pos (+ word-beg (match-end 0)))
+              (setq word (substring keys word-beg word-end)
+                    pos word-end))
+            (when (string-match "\\([0-9]+\\)\\*." word)
+              (setq times (string-to-number (substring word 0 (match-end 1))))
+              (setq word (substring word (1+ (match-end 1)))))
+            (cond ((string-match "^<<.+>>$" word)
+                   (setq key (vconcat (if (eq (key-binding [?\M-x])
+                                              'execute-extended-command)
+                                          [?\M-x]
+                                        (or (car (where-is-internal
+                                                  'execute-extended-command))
+                                            [?\M-x]))
+                                      (substring word 2 -2) "\r")))
+                  ((and (string-match "^\\(\\([ACHMsS]-\\)*\\)<\\(.+\\)>$" word)
+                        (progn
+                          (setq word (concat (match-string 1 word)
+                                             (match-string 3 word)))
+                          (not (string-match
+                                "\\<\\(NUL\\|RET\\|LFD\\|ESC\\|SPC\\|DEL\\)$"
+                                word))))
+                   (setq key (list (intern word))))
+                  ((or (equal word "REM") (string-match "^;;" word))
+                   (setq pos (string-match "$" keys pos)))
+                  (t
+                   (let ((orig-word word) (prefix 0) (bits 0))
+                     (while (string-match "^[ACHMsS]-." word)
+                       (setq bits (+ bits
+                                     (cdr
+                                      (assq (aref word 0)
+                                            '((?A . ?\A-\^@) (?C . ?\C-\^@)
+                                              (?H . ?\H-\^@) (?M . ?\M-\^@)
+                                              (?s . ?\s-\^@) (?S . ?\S-\^@))))))
+                       (setq prefix (+ prefix 2))
+                       (setq word (substring word 2)))
+                     (when (string-match "^\\^.$" word)
+                       (setq bits (+ bits ?\C-\^@))
+                       (setq prefix (1+ prefix))
+                       (setq word (substring word 1)))
+                     (let ((found (assoc word '(("NUL" . "\0") ("RET" . "\r")
+                                                ("LFD" . "\n") ("TAB" . "\t")
+                                                ("ESC" . "\e") ("SPC" . " ")
+                                                ("DEL" . "\177")))))
+                       (when found (setq word (cdr found))))
+                     (when (string-match "^\\\\[0-7]+$" word)
+                       (let ((n 0))
+                         (dolist (ch (cdr (string-to-list word)))
+                           (setq n (+ (* n 8) ch -48)))
+                         (setq word (vector n))))
+                     (cond ((= bits 0)
+                            (setq key word))
+                           ((and (= bits ?\M-\^@) (stringp word)
+                                 (string-match "^-?[0-9]+$" word))
+                            (setq key (mapcar (lambda (x) (+ x bits))
+                                              (append word nil))))
+                           ((/= (length word) 1)
+                            (error "%s must prefix a single character, not %s"
+                                   (substring orig-word 0 prefix) word))
+                           ((and (/= (logand bits ?\C-\^@) 0) (stringp word)
+                                 ;; We used to accept . and ? here,
+                                 ;; but . is simply wrong,
+                                 ;; and C-? is not used (we use DEL instead).
+                                 (string-match "[@-_a-z]" word))
+                            (setq key (list (+ bits (- ?\C-\^@)
+                                               (logand (aref word 0) 31)))))
+                           (t
+                            (setq key (list (+ bits (aref word 0)))))))))
+            (when key
+              (dolist (_ (number-sequence 1 times))
+                (setq res (vconcat res key))))))
+        (if (and (>= (length res) 4)
+                 (eq (aref res 0) ?\C-x)
+                 (eq (aref res 1) ?\()
+                 (eq (aref res (- (length res) 2)) ?\C-x)
+                 (eq (aref res (- (length res) 1)) ?\)))
+            (apply #'vector (let ((lres (append res nil)))
+                              ;; Remove the first and last two elements.
+                              (setq lres (cdr (cdr lres)))
+                              (nreverse lres)
+                              (setq lres (cdr (cdr lres)))
+                              (nreverse lres)))
+          res)))))
+
+(provide 'compat)
+;;; compat.el ends here
@@ -0,0 +1,74 @@
+;;; dawn.el --- Do things at dawn (and dusk) -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;; There is also circadian.el, but it doesn't quite work for me.
+;; This code comes mostly from https://gnu.xyz/auto_theme.html, but also
+;; somewhere else (which I've forgotten) and my own brain :)
+
+;;; Code:
+
+(require 'calendar)
+(require 'cl-lib)
+(require 'solar)
+
+(defvar dawn--dawn-timer nil
+  "Timer for dawn-command.")
+
+(defvar dawn--dusk-timer nil
+  "Timer for dusk-command.")
+
+(defvar dawn--reset-timer nil
+  "Timer to reset dawn at midnight.")
+
+(defun dawn-encode-time (f)
+  "Encode fractional time F."
+  (let ((hhmm (cl-floor f))
+        (date (cdddr (decode-time))))
+    (encode-time
+     (append (list 0
+                   (round (* 60 (cadr hhmm)))
+                   (car hhmm)
+                   )
+             date))))
+
+(defun dawn-midnight ()
+  "Return the time of the /next/ midnight."
+  (let ((date (cdddr (decode-time))))
+    (encode-time
+     (append (list 0 0 0 (1+ (car date))) (cdr date)))))
+
+(defun dawn-sunrise ()
+  "Return the time of today's sunrise."
+  (dawn-encode-time (caar (solar-sunrise-sunset (calendar-current-date)))))
+
+(defun dawn-sunset ()
+  "Return the time of today's sunset."
+  (dawn-encode-time (caadr (solar-sunrise-sunset (calendar-current-date)))))
+
+(defun dawn-schedule (dawn-command dusk-command)
+  "Run DAWN-COMMAND at sunrise, and DUSK-COMMAND at dusk.
+RESET is an argument for internal use."
+  (let ((dawn (dawn-sunrise))
+        (dusk (dawn-sunset)))
+    (cond
+     ((time-less-p nil dawn)
+      ;; If it isn't dawn yet, it's still dark.  Run DUSK-COMMAND and schedule
+      ;; DAWN-COMMAND and DUSK-COMMAND for later.
+      (funcall dusk-command)
+      (run-at-time dawn nil dawn-command)
+      (run-at-time dusk nil dusk-command))
+     ((time-less-p nil dusk)
+      ;; If it isn't dusk yet, it's still light.  Run DAWN-COMMAND and schedule
+      ;; DUSK-COMMAND.
+      (funcall dawn-command)
+      (run-at-time dusk nil dusk-command))
+     (t ;; Otherwise, it's past dusk, so run DUSK-COMMAND.
+      (funcall dusk-command)))
+    ;; Schedule a reset at midnight, to re-calculate dawn/dusk times.
+    ;(unless reset)
+    (run-at-time (dawn-midnight) nil
+                 #'dawn-schedule dawn-command dusk-command)))
+
+(provide 'dawn)
+;;; dawn.el ends here
@@ -1,37 +0,0 @@
-;;; fibs.el --- Play backgammon with FIBS -*- lexical-binding: t; -*-
-
-;;; Commentary:
-
-;; fibs.com is one of the oldest backgammon servers out there, and it's
-;; accessible via telnet.  This package provides a wrapper to enable you to play
-;; backgammon on fibs.com more easily than just opening a telnet session
-;; yourself.
-
-;;; TODO:
-
-;; - Automatically log in.
-;; - Add a `fibs-quit' function to kill the telnet server and buffer.
-
-;;; Code:
-
-(require 'telnet)
-
-(defgroup fibs nil
-  "Customizations for FIBS, the First Internet Backgammon Server."
-  :group 'games)
-
-(defcustom fibs-server "fibs.com"
-  "The server to connect to FIBS with."
-  :type 'string)
-
-(defcustom fibs-port 4321
-  "The port to connect to FIBS with."
-  :type 'number)
-
-;;;###autoload
-(defun fibs ()
-  (interactive)
-  (telnet fibs-server fibs-port))
-
-(provide 'fibs)
-;;; fibs.el ends here