This function's standard definition is trivial; it just returns the argument.
However, on some systems, the function is redefined
with a definition that really does change some file names."
- (if (or (msdos-long-file-names)
- (not (stringp filename))
- (member (file-name-nondirectory filename) '("" "." "..")))
+ (if (or (not (stringp filename))
+ ;; This catches the case where FILENAME is "x:" or "x:/" or
+ ;; "/", thus preventing infinite recursion.
+ (string-match "\\`\\([a-zA-Z]:\\)?[/\\]?\\'" filename))
filename
- (let* ((dir (file-name-directory filename))
- (string (copy-sequence (file-name-nondirectory filename)))
- (lastchar (aref string (1- (length string))))
- i firstdot)
- ;; Change a leading period to a leading underscore.
- (if (= (aref string 0) ?.)
- (aset string 0 ?_))
- ;; Get rid of invalid characters.
- (while (setq i (string-match
- "[^-a-zA-Z0-9_.%~^$!#&{}@`'()\200-\376]"
- string))
- (aset string i ?_))
- ;; If we don't have a period,
- ;; and we have a dash or underscore that isn't the first char,
- ;; change that to a period.
- (if (and (not (string-match "\\." string))
- (setq i (string-match "[-_]" string 1)))
- (aset string i ?\.))
- ;; If we don't have a period in the first 8 chars, insert one.
- (if (> (or (string-match "\\." string)
- (length string))
- 8)
- (setq string
- (concat (substring string 0 8)
- "."
- (substring string 8))))
- (setq firstdot (or (string-match "\\." string) (1- (length string))))
- ;; Truncate to 3 chars after the first period.
- (if (> (length string) (+ firstdot 4))
- (setq string (substring string 0 (+ firstdot 4))))
- ;; Change all periods except the first one into underscores.
- (while (string-match "\\." string (1+ firstdot))
- (setq i (string-match "\\." string (1+ firstdot)))
- (aset string i ?_))
- ;; If the last character of the original filename was `~',
- ;; make sure the munged name ends with it also.
- (if (equal lastchar ?~)
- (aset string (1- (length string)) lastchar))
- (concat dir string))))
+ (let ((flen (length filename)))
+ ;; If FILENAME has a trailing slash, remove it and recurse.
+ (if (memq (aref filename (1- flen)) '(?/ ?\\))
+ (concat (convert-standard-filename
+ (substring filename 0 (1- flen)))
+ "/")
+ (let* (;; ange-ftp gets in the way for names like "/foo:bar".
+ ;; We need to inhibit all magic file names, because
+ ;; remote file names should never be passed through
+ ;; this function, as they are not meant for the local
+ ;; filesystem!
+ (file-name-handler-alist nil)
+ (dir
+ ;; If FILENAME is "x:foo", file-name-directory returns
+ ;; "x:/bar/baz", substituting the current working
+ ;; directory on drive x:. We want to be left with "x:"
+ ;; instead.
+ (if (and (< 1 flen)
+ (eq (aref filename 1) ?:)
+ (null (string-match "[/\\]" filename)))
+ (substring filename 0 2)
+ (file-name-directory filename)))
+ (dlen-m-1 (1- (length dir)))
+ (string (copy-sequence (file-name-nondirectory filename)))
+ (lastchar (aref string (1- (length string))))
+ i firstdot)
+ (cond
+ ((msdos-long-file-names)
+ ;; Replace characters that are invalid even on Windows.
+ (while (setq i (string-match "[?*:<>|\"\000-\037]" string))
+ (aset string i ?!)))
+ ((not (member string '("" "." "..")))
+ ;; Change a leading period to a leading underscore.
+ (if (= (aref string 0) ?.)
+ (aset string 0 ?_))
+ ;; Get rid of invalid characters.
+ (while (setq i (string-match
+ "[^-a-zA-Z0-9_.%~^$!#&{}@`'()\200-\376]"
+ string))
+ (aset string i ?_))
+ ;; If we don't have a period,
+ ;; and we have a dash or underscore that isn't the first char,
+ ;; change that to a period.
+ (if (and (not (string-match "\\." string))
+ (setq i (string-match "[-_]" string 1)))
+ (aset string i ?\.))
+ ;; If we don't have a period in the first 8 chars, insert one.
+ (if (> (or (string-match "\\." string) (length string))
+ 8)
+ (setq string
+ (concat (substring string 0 8)
+ "."
+ (substring string 8))))
+ (setq firstdot (or (string-match "\\." string)
+ (1- (length string))))
+ ;; Truncate to 3 chars after the first period.
+ (if (> (length string) (+ firstdot 4))
+ (setq string (substring string 0 (+ firstdot 4))))
+ ;; Change all periods except the first one into underscores.
+ (while (string-match "\\." string (1+ firstdot))
+ (setq i (string-match "\\." string (1+ firstdot)))
+ (aset string i ?_))
+ ;; If the last character of the original filename was `~',
+ ;; make sure the munged name ends with it also. This is so
+ ;; a backup file retains its final `~'.
+ (if (equal lastchar ?~)
+ (aset string (1- (length string)) lastchar))))
+ (concat (if (and (stringp dir)
+ (memq (aref dir dlen-m-1) '(?/ ?\\)))
+ (concat (convert-standard-filename
+ (substring dir 0 dlen-m-1))
+ "/")
+ (convert-standard-filename dir))
+ string))))))
;; See dos-vars.el for defcustom.
(defvar msdos-shells)
+;;; Override setting chosen at startup.
+(defun set-default-process-coding-system ()
+ (setq default-process-coding-system
+ (if default-enable-multibyte-characters
+ '(undecided-dos . undecided-dos)
+ '(raw-text-dos . raw-text-dos))))
+
+(add-hook 'before-init-hook 'set-default-process-coding-system)
+
(defvar register-name-alist
'((ax . 0) (bx . 1) (cx . 2) (dx . 3) (si . 4) (di . 5)
(cflag . 6) (flags . 7)
(defsubst intdos (regs)
(int86 33 regs))
-;; Support for printing under MS-DOS, see lpr.el and ps-print.el.
-;; See dos-vars.el for defcustom.
-(defvar dos-printer)
-
-(defun dos-print-region-function (start end
- &optional lpr-prog
- delete-text buf display rest)
- "MS-DOS-specific function to print the region on a printer.
-Writes the region to the device or file which is a value of
-`dos-printer' \(which see\). Ignores any arguments beyond
-START and END."
-
- ;; DOS printers need the lines to end with CR-LF pairs, so make
- ;; sure it always happens that way, unless the buffer is binary.
- (let* ((coding coding-system-for-write)
- (coding-base
- (if (null coding) 'undecided (coding-system-base coding)))
- (eol-type (coding-system-eol-type coding-base)))
- (or (eq coding-system-for-write 'no-conversion)
- (setq coding-system-for-write
- (aref eol-type 1))) ; force conversion to DOS EOLs
- (write-region start end dos-printer t 0)
- ;; Make each print-out start on a new page, but don't waste
- ;; paper if there was a form-feed at the end of this file.
- (if (not (char-equal (char-after (1- end)) ?\C-l))
- (write-region "\f" nil dos-printer t 0))))
-
-;; Set this to nil if you have a port of the `lpr' program and
-;; you want to use it for printing. If the default setting is
-;; in effect, `lpr-command' and its switches are ignored when
-;; printing with `lpr-xxx' and `print-xxx'.
-(setq print-region-function 'dos-print-region-function)
-
-;; Set this to nil if you have a port of the `pr' program
-;; (e.g., from GNU Textutils), or if you have an `lpr'
-;; program (see above) that can print page headers.
-;; If `lpr-headers-switches' is non-nil (the default) and
-;; `print-region-function' is set to `dos-print-region-function',
-;; then requests to print page headers will be silently
-;; ignored, and `print-buffer' and `print-region' produce
-;; the same output as `lpr-buffer' and `lpr-region', accordingly.
-(setq lpr-headers-switches "(page headers are not supported)")
-
-;; See dos-vars.el for defcustom.
-(defvar dos-ps-printer)
-
-(setq ps-lpr-command "gs")
-
-(setq ps-lpr-switches '("-q" "-dNOPAUSE" "-sDEVICE=epson" "-r240x60"
- "-sOutputFile=LPT1" "-"))
-
;; Backward compatibility for obsolescent functions which
;; set screen size.
HCoop / bpt / emacs.git / blobdiff