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(printer-name): Update docstring about usage on MS-DOS

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and MS-Windows.
(lpr-command) [ms-dos, windows-nt]: Initialize to empty string on
DOS and Windows platforms, to indicate direct printing.  Update
the docstring accordingly.
This commit is contained in:
Andrew Innes 1999-01-17 18:58:43 +00:00
parent 52cf535f30
commit 8bc62130b3
1 changed files with 24 additions and 11 deletions
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35
lisp/lpr.el
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@ -41,15 +41,15 @@
\(Note that PostScript files are sent to `ps-printer-name', which see.\)
On Unix-like systems, a string value should be a name understood by
lpr's -P option.
lpr's -P option; otherwise the value should be nil.
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\"."
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))
@ -74,9 +74,22 @@ this variable should be nil."
;;;###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)