;; Commands to send the region or a buffer your printer. Entry points
;; are `lpr-buffer', `print-buffer', lpr-region', or `print-region'; option
-;; variables include `lpr-switches' and `lpr-command'.
+;; variables include `printer-name', `lpr-switches' and `lpr-command'.
;;; Code:
"Print Emacs buffer on line printer"
:group 'wp)
+;;;###autoload
+(defcustom printer-name
+ (if (memq system-type '(ms-dos windows-nt)) "PRN")
+ "*The name of a local printer to which data is sent for printing.
+\(Note that PostScript files are sent to `ps-printer-name', which see.\)
+
+On Unix-like systems, a string value should be a name understood by
+lpr's -P option.
+
+On MS-DOS and MS-Windows systems, it is the name of a printer device or
+port. Typical non-default settings would be \"LPT1\" to \"LPT3\" for
+parallel printers, or \"COM1\" to \"COM4\" or \"AUX\" for serial
+printers, or \"//hostname/printer\" for a shared network printer. You
+can also set it to a name of a file, in which case the output gets
+appended to that file. If you want to discard the printed output, set
+this to \"NUL\"."
+ :type '(choice ; could use string but then we lose completion for files.
+ (file :tag "Name")
+ (const :tag "Default" nil))
+ :group 'lpr)
;;;###autoload
(defcustom lpr-switches nil
"*List of strings to pass as extra options for the printer program.
+It is recommended to set `printer-name' instead of including an explicit
+switch on this list.
See `lpr-command'."
:type '(repeat (string :tag "Argument"))
:group 'lpr)
;; Berkeley systems support -F, and GNU pr supports both -f and -F,
;; So it looks like -F is a better default.
-(defcustom lpr-page-header-switches '("-F"))
+(defcustom lpr-page-header-switches '("-F")
"*List of strings to use as options for the page-header-generating program.
The variable `lpr-page-header-program' specifies the program to use."
:type '(repeat string)
;; and it seems to annoying to do for that MIPS system.
(let ((name (concat (buffer-name) " Emacs buffer"))
(title (concat (buffer-name) " Emacs buffer"))
- ;; On MS-DOS systems, make pipes use binary mode if the
- ;; original file is binary.
- (binary-process-input buffer-file-type)
- (binary-process-output buffer-file-type)
+ ;; Make pipes use the same coding system as
+ ;; writing the buffer to a file would.
+ (coding-system-for-write
+ (or coding-system-for-write buffer-file-coding-system))
+ (coding-system-for-read
+ (or coding-system-for-read buffer-file-coding-system))
(width tab-width)
switch-string)
(save-excursion
(setq start (car new-coords) end (cdr new-coords)))
(apply 'call-process-region start end lpr-page-header-program
t t nil
- (nconc (and lpr-add-switches
- (list "-h" title))
+ (nconc (list "-h" title)
lpr-page-header-switches))
(setq start (point-min) end (point-max))))
(apply (or print-region-function 'call-process-region)
;; These belong in pr if we are using that.
(and lpr-add-switches lpr-headers-switches
(list "-T" title))
+ (and (stringp printer-name)
+ (list (concat "-P" printer-name)))
switches)))
(if (markerp end)
(set-marker end nil))