notmuch/emacs/notmuch-print.el
Jonas Bernoulli 0067a43ea2 emacs: deal with unused lexical arguments and variables
The previous commit switched to lexical-binding but without dealing
with the new warnings about unused lexical arguments and variables.

This commit deals with most of them, in most cases by either removing
leftover bindings that are actually unnecessary, or by marking certain
arguments as "known to be unused" by prefixing their names with "_".

In the case of the functions named `notmuch-show-insert-...' the
amount of silencing that is required is a bit extreme and we might
want to investigate if there is a better way.

In the case of `notmuch-mua-mail', ignoring CONTINUE means that we do
not fully follow the intended behavior described in `compose-mail's
doc-string.
2021-01-13 07:16:23 -04:00

100 lines
3.2 KiB
EmacsLisp

;;; notmuch-print.el --- printing messages from notmuch -*- lexical-binding: t -*-
;;
;; Copyright © David Edmondson
;;
;; This file is part of Notmuch.
;;
;; Notmuch 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 3 of the License, or
;; (at your option) any later version.
;;
;; Notmuch 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.
;;
;; You should have received a copy of the GNU General Public License
;; along with Notmuch. If not, see <https://www.gnu.org/licenses/>.
;;
;; Authors: David Edmondson <dme@dme.org>
;;; Code:
(require 'notmuch-lib)
(declare-function notmuch-show-get-prop "notmuch-show" (prop &optional props))
;;; Options
(defcustom notmuch-print-mechanism 'notmuch-print-lpr
"How should printing be done?"
:group 'notmuch-show
:type '(choice
(function :tag "Use lpr" notmuch-print-lpr)
(function :tag "Use ps-print" notmuch-print-ps-print)
(function :tag "Use ps-print then evince" notmuch-print-ps-print/evince)
(function :tag "Use muttprint" notmuch-print-muttprint)
(function :tag "Use muttprint then evince" notmuch-print-muttprint/evince)
(function :tag "Using a custom function")))
;;; Utility functions
(defun notmuch-print-run-evince (file)
"View FILE using 'evince'."
(start-process "evince" nil "evince" file))
(defun notmuch-print-run-muttprint (&optional output)
"Pass the contents of the current buffer to 'muttprint'.
Optional OUTPUT allows passing a list of flags to muttprint."
(apply #'call-process-region (point-min) (point-max)
;; Reads from stdin.
"muttprint"
nil nil nil
;; Show the tags.
"--printed-headers" "Date_To_From_CC_Newsgroups_*Subject*_/Tags/"
output))
;;; User-visible functions
(defun notmuch-print-lpr (_msg)
"Print a message buffer using lpr."
(lpr-buffer))
(defun notmuch-print-ps-print (msg)
"Print a message buffer using the ps-print package."
(let ((subject (notmuch-prettify-subject
(plist-get (notmuch-show-get-prop :headers msg) :Subject))))
(rename-buffer subject t)
(ps-print-buffer)))
(defun notmuch-print-ps-print/evince (msg)
"Preview a message buffer using ps-print and evince."
(let ((ps-file (make-temp-file "notmuch" nil ".ps"))
(subject (notmuch-prettify-subject
(plist-get (notmuch-show-get-prop :headers msg) :Subject))))
(rename-buffer subject t)
(ps-print-buffer ps-file)
(notmuch-print-run-evince ps-file)))
(defun notmuch-print-muttprint (_msg)
"Print a message using muttprint."
(notmuch-print-run-muttprint))
(defun notmuch-print-muttprint/evince (_msg)
"Preview a message buffer using muttprint and evince."
(let ((ps-file (make-temp-file "notmuch" nil ".ps")))
(notmuch-print-run-muttprint (list "--printer" (concat "TO_FILE:" ps-file)))
(notmuch-print-run-evince ps-file)))
(defun notmuch-print-message (msg)
"Print a message using the user-selected mechanism."
(set-buffer-modified-p nil)
(funcall notmuch-print-mechanism msg))
;;; _
(provide 'notmuch-print)
;;; notmuch-print.el ends here