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My .emacs.d directory
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;; Some custom functions for buffer content manipulation
(defun delete-current-line ()
"Kill the whole line on which point is"
(interactive)
(beginning-of-line)
(kill-line 1))
(defun copy-func-prototype ()
"Copy the current function's prototype to the kill-ring"
(interactive)
(save-excursion
(beginning-of-defun)
(setq protocopy-begin (point))
(forward-list)
(setq protocopy-end (point))
(kill-ring-save protocopy-begin protocopy-end)))
(defun duplicate-line()
"Duplicate line at point."
(interactive)
(save-excursion
(move-beginning-of-line 1)
(kill-line)
(yank)
(open-line 1)
(next-line 1)
(yank)))
(defun toggle-char-case (arg-move-point)
"Toggle the case of the char after point. Based on Xah's toggle letter
case defun version 2015-12-22
URL `http://ergoemacs.org/emacs/modernization_upcase-word.html'
Version 2016-02-16"
(interactive "P")
(let ((case-fold-search nil))
(cond
((looking-at "[[:lower:]]") (upcase-region (point) (1+ (point))))
((looking-at "[[:upper:]]") (downcase-region (point) (1+ (point)))))
(cond
(arg-move-point (right-char)))))
; Copied from http://whattheemacsd.com/editing-defuns.el-01.html
(defun open-line-below ()
"Open a new line below point."
(interactive)
(end-of-line)
(newline)
(indent-for-tab-command))
(defun open-line-above ()
"Open a new line above point."
(interactive)
(beginning-of-line)
(newline)
(forward-line -1)
(indent-for-tab-command))
; Copied from http://whattheemacsd.com/file-defuns.el-01.html
(defun rename-current-buffer-file ()
"Renames current buffer and file it is visiting."
(interactive)
(let ((name (buffer-name))
(filename (buffer-file-name)))
(if (not (and filename (file-exists-p filename)))
(error "Buffer '%s' is not visiting a file!" name)
(let ((new-name (read-file-name "New name: " filename)))
(if (get-buffer new-name)
(error "A buffer named '%s' already exists!" new-name)
(rename-file filename new-name 1)
(rename-buffer new-name)
(set-visited-file-name new-name)
; TODO: this is suspicious for me…
(set-buffer-modified-p nil)
(message "File '%s' successfully renamed to '%s'"
name (file-name-nondirectory new-name)))))))
; Copied from http://whattheemacsd.com/file-defuns.el-02.html
(defun delete-current-buffer-file ()
"Removes file connected to current buffer and kills the
buffer."
(interactive)
(let ((filename (buffer-file-name))
(name (buffer-name))
(buffer (current-buffer)))
(if (not (and filename (file-exists-p filename)))
(kill-buffer buffer)
(when (yes-or-no-p "Are you sure you want to remove this file? ")
(delete-file filename)
(kill-buffer buffer)
(message "File '%s' successfully removed" filename)))))
; delete-char or close eshell
; Copied from https://ryuslash.org/posts/C-d-to-close-eshell.html
(defun eshell-C-d ()
"Either call `delete-char' interactively or quit."
(interactive)
(condition-case err
(call-interactively #'delete-char)
(error (if (and (eq (car err) 'end-of-buffer)
(looking-back eshell-prompt-regexp))
(kill-buffer)
(signal (car err) (cdr err))))))
(defun æ-kill-or-copy-whole-line (kill)
"Kill or copy the whole line point is on.
If KILL is non-nil, the line gets killed. Otherwise, it gets just
copied to the kill-ring."
(interactive "P")
(if kill
(kill-whole-line)
(let ((beginning (progn (beginning-of-line) (point)))
(end (progn (end-of-line) (point))))
(copy-region-as-kill beginning end))))