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(dired-buffers-for-dir): Assume dirs are preexpanded.

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(dired-in-this-tree): Likewise.
(dired-advertise, dired-unadvertise): Expand default-directory.
This commit is contained in:
Richard M. Stallman 1994-09-16 21:34:27 +00:00
parent 7c70cfd377
commit 3881977896
1 changed files with 27 additions and 19 deletions
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46
lisp/dired.el
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@ -188,6 +188,7 @@ directory name and the cdr is the actual files to list.")
(defvar dired-re-perms "-[-r][-w].[-r][-w].[-r][-w].")
(defvar dired-re-dot "^.* \\.\\.?$")
;; The subdirectory names in this list are expanded.
(defvar dired-subdir-alist nil
"Association list of subdirectories and their buffer positions.
Each subdirectory has an element: (DIRNAME . STARTMARKER).
@ -1250,37 +1251,41 @@ Optional arg NO-ERROR-IF-NOT-FILEP means return nil if no filename on
;; Enlarged by dired-advertise
;; Queried by function dired-buffers-for-dir. When this detects a
;; killed buffer, it is removed from this list.
"Alist of directories and their associated dired buffers.")
"Alist of expanded directories and their associated dired buffers.")
(defun dired-buffers-for-dir (dir)
;; Return a list of buffers that dired DIR (top level or in-situ subdir).
;; The list is in reverse order of buffer creation, most recent last.
;; As a side effect, killed dired buffers for DIR are removed from
;; dired-buffers.
;; For testing. -MDE 8/21/94
(if (not (string-equal dir (expand-file-name dir)))
(debug))
(setq dir (file-name-as-directory dir))
(let ((alist dired-buffers) result elt)
(let ((alist dired-buffers) result elt buf)
(while alist
(setq elt (car alist))
(if (dired-in-this-tree dir (car elt))
(let ((buf (cdr elt)))
(if (buffer-name buf)
(if (assoc dir (save-excursion
(set-buffer buf)
dired-subdir-alist))
(setq result (cons buf result)))
;; else buffer is killed - clean up:
(setq dired-buffers (delq elt dired-buffers)))))
(setq elt (car alist)
buf (cdr elt))
(if (buffer-name buf)
(if (dired-in-this-tree dir (car elt))
(if (assoc dir (save-excursion
(set-buffer buf)
dired-subdir-alist))
(setq result (cons buf result))))
;; else buffer is killed - clean up:
(setq dired-buffers (delq elt dired-buffers)))
(setq alist (cdr alist)))
result))
(defun dired-advertise ()
;;"Advertise in variable `dired-buffers' that we dired `default-directory'."
;; With wildcards we actually advertise too much.
(if (memq (current-buffer) (dired-buffers-for-dir default-directory))
t ; we have already advertised ourselves
(setq dired-buffers
(cons (cons default-directory (current-buffer))
dired-buffers))))
(let ((expanded-default (expand-file-name default-directory)))
(if (memq (current-buffer) (dired-buffers-for-dir expanded-default))
t ; we have already advertised ourselves
(setq dired-buffers
(cons (cons expanded-default (current-buffer))
dired-buffers)))))
(defun dired-unadvertise (dir)
;; Remove DIR from the buffer alist in variable dired-buffers.
@ -1288,7 +1293,7 @@ Optional arg NO-ERROR-IF-NOT-FILEP means return nil if no filename on
;; It does not affect buffers in which DIR is a subdir.
;; Removing is also done as a side-effect in dired-buffer-for-dir.
(setq dired-buffers
(delq (assoc dir dired-buffers) dired-buffers)))
(delq (assoc (expand-file-name dir) dired-buffers) dired-buffers)))
;; Tree Dired
@ -1296,8 +1301,11 @@ Optional arg NO-ERROR-IF-NOT-FILEP means return nil if no filename on
(defun dired-in-this-tree (file dir)
;;"Is FILE part of the directory tree starting at DIR?"
;; For testing. -MDE 8/21/94
(if (not (string-equal dir (expand-file-name dir)))
(debug))
(let (case-fold-search)
(string-match (concat "^" (regexp-quote (expand-file-name dir))) file)))
(string-match (concat "^" (regexp-quote dir)) file)))
(defun dired-normalize-subdir (dir)
;; Prepend default-directory to DIR if relative path name.