;; 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; otherwise the value should be nil.
+
+On MS-DOS and MS-Windows systems, a string value is taken as the name of
+a printer device or port, provided `lpr-command' is set to \"\".
+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 the 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)
;;;###autoload
(defcustom lpr-command
- (if (memq system-type '(usg-unix-v dgux hpux irix))
- "lp" "lpr")
- "*Name of program for printing a file."
+ (cond
+ ((memq system-type '(ms-dos windows-nt))
+ "")
+ ((memq system-type '(usg-unix-v dgux hpux irix))
+ "lp")
+ (t
+ "lpr"))
+ "*Name of program for printing a file.
+
+On MS-DOS and MS-Windows systems, if the value is an empty string then
+Emacs will write directly to the printer port named by `printer-name'.
+The programs `print' and `nprint' (the standard print programs on
+Windows NT and Novell Netware respectively) are handled specially, using
+`printer-name' as the destination for output; any other program is
+treated like `lpr' except that an explicit filename is given as the last
+argument."
:type 'string
: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 '("-h" "-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)
;;;###autoload
(defun lpr-buffer ()
- "Print buffer contents as with Unix command `lpr'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Print buffer contents without pagination or page headers.
+See the variables `lpr-switches' and `lpr-command'
+for customization of the printer command."
(interactive)
(print-region-1 (point-min) (point-max) lpr-switches nil))
;;;###autoload
(defun print-buffer ()
- "Print buffer contents as with Unix command `lpr -p'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Paginate and print buffer contents.
+
+The variable `lpr-headers-switches' controls how to paginate.
+If it is nil (the default), we run the `pr' program (or whatever program
+`lpr-page-header-program' specifies) to paginate.
+`lpr-page-header-switches' specifies the switches for that program.
+
+Otherwise, the switches in `lpr-headers-switches' are used
+in the print command itself; we expect them to request pagination.
+
+See the variables `lpr-switches' and `lpr-command'
+for further customization of the printer command."
(interactive)
(print-region-1 (point-min) (point-max) lpr-switches t))
;;;###autoload
(defun lpr-region (start end)
- "Print region contents as with Unix command `lpr'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Print region contents without pagination or page headers.
+See the variables `lpr-switches' and `lpr-command'
+for customization of the printer command."
(interactive "r")
(print-region-1 start end lpr-switches nil))
;;;###autoload
(defun print-region (start end)
- "Print region contents as with Unix command `lpr -p'.
-`lpr-switches' is a list of extra switches (strings) to pass to lpr."
+ "Paginate and print the region contents.
+
+The variable `lpr-headers-switches' controls how to paginate.
+If it is nil (the default), we run the `pr' program (or whatever program
+`lpr-page-header-program' specifies) to paginate.
+`lpr-page-header-switches' specifies the switches for that program.
+
+Otherwise, the switches in `lpr-headers-switches' are used
+in the print command itself; we expect them to request pagination.
+
+See the variables `lpr-switches' and `lpr-command'
+for further customization of the printer command."
(interactive "r")
(print-region-1 start end lpr-switches t))
;; 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 (list "-h" title)
- lpr-page-header-switches))
+ lpr-page-header-switches)
(setq start (point-min) end (point-max))))
- (apply (or print-region-function 'call-process-region)
- (nconc (list start end lpr-command
- nil nil nil)
- (nconc (and lpr-add-switches
- (list "-J" name))
- ;; These belong in pr if we are using that.
- (and lpr-add-switches lpr-headers-switches
- (list "-T" title))
- switches)))
+ (let ((printer-name-switch (if (memq system-type
+ '(usg-unix-v dgux hpux irix))
+ "-d" "-P")))
+ (apply (or print-region-function 'call-process-region)
+ (nconc (list start end lpr-command
+ nil nil nil)
+ (nconc (and lpr-add-switches
+ (list "-J" name))
+ ;; 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 printer-name-switch
+ printer-name)))
+ switches))))
(if (markerp end)
(set-marker end nil))
(message "Spooling%s...done" switch-string))))