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;;; racket-repl-buffer-name.el -*- lexical-binding: t; -*-
;; Copyright (c) 2013-2020 by Greg Hendershott.
;; Portions Copyright (C) 1985-1986, 1999-2013 Free Software Foundation, Inc.
;; Author: Greg Hendershott
;; URL: https://github.com/greghendershott/racket-mode
;; License:
;; This is free software; you can redistribute it and/or modify it
;; under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version. This is distributed in the hope that it will be
;; useful, but without any warranty; without even the implied warranty
;; of merchantability or fitness for a particular purpose. See the GNU
;; General Public License for more details. See
;; http://www.gnu.org/licenses/ for details.
(require 'racket-custom)
(require 'racket-repl)
(require 'racket-util)
;;;###autoload
(defun racket-repl-buffer-name-shared ()
"All `racket-mode' edit buffers share one `racket-repl-mode' buffer.
A value for the variable `racket-repl-buffer-name-function'."
(interactive)
(setq-default racket-repl-buffer-name "*Racket REPL*"))
;;;###autoload
(defun racket-repl-buffer-name-unique ()
"Each `racket-mode' edit buffer gets its own `racket-repl-mode' buffer.
A value for the variable `racket-repl-buffer-name-function'."
(interactive)
(let ((name (format "*Racket REPL <%s>*" (racket--buffer-file-name))))
(setq-local racket-repl-buffer-name name)))
;;;###autoload
(defun racket-repl-buffer-name-project ()
"All `racket-mode' buffers in a project share a `racket-repl-mode' buffer.
A value for the variable `racket-repl-buffer-name-function'.
The \"project\" is determined by `racket-project-root'."
(interactive)
(setq-local racket-repl-buffer-name
(format "*Racket REPL <%s>*"
(racket-project-root (racket--buffer-file-name)))))
(defun racket-mode-maybe-offer-to-kill-repl-buffer ()
"Maybe offer to kill a `racket-repl-mode' buffer.
A value for `kill-buffer-hook'.
Offer to kill a `racket-repl-mode' buffer when killing the last
`racket-mode' buffer using it. Although is not necessary to do
so, a user might want to do some \"cleanup\" -- especially if
they're using a `racket-repl-buffer-name-function' such as
`racket-repl-buffer-name-unique'."
(when (eq major-mode 'racket-mode)
(pcase (get-buffer racket-repl-buffer-name)
((and (pred bufferp) repl-buffer)
(let ((n (1-
(length
(racket--buffers-using-repl racket-repl-buffer-name)))))
(if (zerop n)
(when (y-or-n-p
(format "No other buffers using %s -- also kill it? "
racket-repl-buffer-name))
;; They already said yes. Avoid another prompt about
;; killing the buffer's process.
(pcase (get-buffer-process repl-buffer)
((and (pred processp) repl-process)
(set-process-query-on-exit-flag repl-process nil)))
(kill-buffer repl-buffer))
(message "%s other buffer%s still using %s"
n
(if (= n 1) "" "s")
racket-repl-buffer-name)))))))
(defun racket--buffers-using-repl (repl-buffer-name)
(seq-filter (lambda (buffer)
(with-current-buffer buffer
(and (eq major-mode 'racket-mode)
(equal racket-repl-buffer-name repl-buffer-name))))
(buffer-list)))
(provide 'racket-repl-buffer-name)
;; racket-repl-buffer-name.el ends here
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