code.delx.au - dotemacs/blob - lisp/my-defuns.el

   1 ;;; -*- lexical-binding: t -*-
   2
   3 (require 'cl-lib)
   4
   5 (defun my/copy-line (arg)
   6   "Copy lines in the kill ring"
   7   (interactive "p")
   8   (kill-ring-save (line-beginning-position)
   9                   (line-beginning-position (+ 1 arg)))
  10   (message "%d line%s copied" arg (if (= 1 arg) "" "s")))
  11
  12 (defun my/generate-frame-title ()
  13   (if (buffer-file-name)
  14       (concat
  15        (file-name-nondirectory (buffer-file-name))
  16        (if (buffer-modified-p)
  17            " +")
  18        " ("
  19        (abbreviate-file-name (substring (file-name-directory (buffer-file-name)) 0 -1))
  20        ") - Emacs"
  21        )
  22     (concat
  23      (buffer-name)
  24      (if (buffer-modified-p)
  25          " +")
  26      " - Emacs")))
  27
  28 (defun my/frame-initial-frame-p (frame)
  29   "Returns true if the given frame is the magic 'initial frame' that always exists in GUI emacs sessions"
  30   (equal "initial_terminal" (terminal-name frame)))
  31
  32 (defun my/frame-list-ignoring-initial-frame ()
  33   (filtered-frame-list (lambda (frame) (not (my/frame-initial-frame-p frame)))))
  34
  35 (defun my/git-reset-buffer ()
  36   (interactive)
  37   (call-process "git" nil nil nil "reset" (buffer-file-name))
  38   (git-gutter))
  39
  40 (defun my/kill-buffer-safely (buffer)
  41   "Kill the buffer if it is not special or modified"
  42   (if (and
  43        (not (string-match "^ " (buffer-name buffer)))
  44        (not (equal "*Messages*" (buffer-name buffer)))
  45        (or
  46         (not (buffer-modified-p buffer))
  47         (null (buffer-file-name buffer))))
  48       (kill-buffer buffer)))
  49
  50 (defun my/kill-buffers-if-deleting-last-frame (frame)
  51   "Kill all buffers when closing the last frame"
  52   (when (equal (list frame) (my/frame-list-ignoring-initial-frame))
  53     (dolist (buffer (buffer-list))
  54       (my/kill-buffer-safely buffer))))
  55
  56 (defun my/kill-buffers-not-in-frame ()
  57   "Kill buffers which are not loaded into some frame"
  58   (interactive)
  59   (let ((kill-count 0))
  60     (dolist (buffer (buffer-list))
  61       (let* ((window (get-buffer-window buffer t))
  62              (frame (window-frame window)))
  63         (if (or (null frame) (not (window-live-p window)) (my/frame-initial-frame-p frame))
  64             (if (my/kill-buffer-safely buffer)
  65                 (cl-incf kill-count)))))
  66     (message "Killed %d buffers" kill-count)))
  67
  68 (defun my/open-line-above ()
  69   "Open a new line above point with indentation"
  70   (interactive)
  71   (beginning-of-line)
  72   (newline)
  73   (forward-line -1)
  74   (indent-for-tab-command))
  75
  76 (defun my/open-line-below ()
  77   "Open a new line below point with indentation"
  78   (interactive)
  79   (end-of-line)
  80   (newline)
  81   (indent-for-tab-command))
  82
  83 (defun my/scratch-buffer ()
  84   "Create a new scratch buffer to work in. (could be *scratch* - *scratchX*)"
  85   (interactive)
  86   (let ((n 0)
  87         bufname)
  88     (while (progn
  89              (setq bufname (concat "*scratch"
  90                                    (if (= n 0) "" (int-to-string n))
  91                                    "*"))
  92              (setq n (1+ n))
  93              (get-buffer bufname)))
  94     (switch-to-buffer (get-buffer-create bufname))
  95     (emacs-lisp-mode)
  96     ))
  97
  98 (defun my/toggle-comment-on-line ()
  99   "Toggles the comment on for the active region if present or the current line otherwise."
 100   (interactive)
 101   (if (and mark-active transient-mark-mode)
 102       (comment-or-uncomment-region (region-beginning) (region-end))
 103     (comment-or-uncomment-region (line-beginning-position) (line-end-position)))
 104   (forward-line))
 105
 106 (defun my/terminal-update-title ()
 107   "If using a terminal frame then sends the escape codes to update the title."
 108   (if (terminal-parameter (frame-terminal) 'terminal-initted)
 109       (send-string-to-terminal (concat "\033]0;" (my/generate-frame-title) "\007"))))