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+;;; Various functions functions that are not part of an external package
+
+(provide 'my-funcs)
+
+
+;; see transparancy in init.el
+(defun toggle-frame-transparency ()
+ "Toggle transparency."
+ (interactive)
+ (let ((alpha-transparency 90))
+ (if (eq alpha-transparency (frame-parameter nil 'alpha-background))
+ (set-frame-parameter nil 'alpha-background 100)
+ (set-frame-parameter nil 'alpha-background alpha-transparency))))
+
+(defun wrap-region-paren ()
+ "Wraps the region in parens.
+Similar to pressing ( with the region active."
+ (interactive)
+ (let ((beg (region-beginning))
+ (end (region-end)))
+ (save-excursion
+ (goto-char beg)
+ (insert "(")
+ (goto-char (+ end 1))
+ (insert ")")
+ )))
+
+(defun zap-whitespace ()
+ "zaps the whitespace around the point in both directions"
+ (interactive)
+ (push-mark)
+ (skip-chars-backward " \t\n")
+ (push-mark)
+ (skip-chars-forward " \t\n")
+ (delete-region (mark) (point))
+ (pop-mark)
+ (goto-char (mark))
+ (pop-mark))
+
+(defun wrap-sexp (&optional arg)
+ "Wraps the following sexp in a pair of parens.
+Places inside the new pair, with prefix arg do the same backwards, pushing the
+mark. Does the same of ARG number sexps if given"
+ (interactive "p")
+ (message "%s" arg)
+ (if arg
+ (progn
+ (push-mark)
+ (insert-pair arg ?\( ?\)))
+ (insert-pair 1 ?\( ?\))))
+
+(defun close-or-kill ()
+ "If this is the sole frame, kill emacs. Otherwise close the frame."
+ (interactive)
+ (if (eq 1 (length (frame-list)))
+ ;; sole frame, exit
+ (save-buffers-kill-terminal)
+ (delete-frame)))
+
+;; indent code when pasting, from
+;; https://trey-jackson.blogspot.com/2008/03/emacs-tip-15-indent-yanked-code.html
+
+;; automatically indenting yanked text if in programming-modes
+(defvar yank-indent-modes '(emacs-lisp-mode
+ c-mode c++-mode
+ tcl-mode sql-mode
+ perl-mode cperl-mode
+ java-mode jde-mode
+ lisp-interaction-mode
+ LaTeX-mode TeX-mode
+ rust-mode
+ rustic-mode)
+ "Modes in which to indent regions that are yanked (or yank-popped).")
+
+(defun yank-advised-indent-function (beg end)
+ "Do indentation, as long as the region isn't too large.
+BEG and END define the region."
+ (indent-region beg end nil))
+
+(defadvice yank (after yank-indent activate)
+ "If current mode is one of 'yank-indent-modes, indent yanked text (with prefix arg don't indent)."
+ (if (and (not (ad-get-arg 0))
+ (member major-mode yank-indent-modes))
+ (let ((transient-mark-mode nil))
+ (yank-advised-indent-function (region-beginning) (region-end)))))
+
+(defadvice yank-pop (after yank-pop-indent activate)
+ "If current mode is one of 'yank-indent-modes, indent yanked text (with prefix arg don't indent)."
+ (if (and (not (ad-get-arg 0))
+ (member major-mode yank-indent-modes))
+ (let ((transient-mark-mode nil))
+ (yank-advised-indent-function (region-beginning) (region-end)))))
+
+(defadvice evil-paste-before (after yank-indent activate)
+ "If current mode is one of 'yank-indent-modes, indent yanked text (with prefix arg don't indent)."
+ (if (and (not (ad-get-arg 0))
+ (member major-mode yank-indent-modes))
+ (let ((transient-mark-mode nil))
+ (yank-advised-indent-function (region-beginning) (region-end)))))
+
+(defadvice evil-paste-after (after yank-indent activate)
+ "If current mode is one of 'yank-indent-modes, indent yanked text (with prefix arg don't indent)."
+ (if (and (not (ad-get-arg 0))
+ (member major-mode yank-indent-modes))
+ (let ((transient-mark-mode nil))
+ (yank-advised-indent-function (region-beginning) (region-end)))))
+
+(defun fold-this-fold-forward (&optional arg)
+ "Fold forward ARG number of sexps, defaulting to one."
+ (interactive "p")
+ (push-mark)
+ (forward-sexp arg)
+ (fold-this (mark) (point))
+ (pop-mark))
+
+(defun fold-this-fold-backward (&optional arg)
+ "Fold backward ARG number of sexps, defaulting to one."
+ (interactive "p")
+ (push-mark)
+ (backward-sexp arg)
+ (fold-this (point) (mark))
+ (pop-mark))
+
+(defun clean-prog-file (buffer)
+ "Fixes whitespace in buffer"
+ (save-excursion
+ (with-current-buffer buffer
+ (untabify (point-min) (point-max))
+ (goto-char (point-min))
+ (while (re-search-forward " +$" nil t)
+ (replace-match "" nil nil)))))
+
+(defun open-window-by-buffer (buffer)
+ "Move focus to an extant window by the buffer it contains."
+ (interactive "bBuffer: ")
+ (let ((win (get-buffer-window buffer t)))
+ (if win
+ (select-window win)
+ (switch-to-buffer buffer))))
+
+(defun dired-do-find-marked-files ()
+ (interactive)
+ (seq-do 'find-file (dired-get-marked-files)))