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startup.el (command-line): For names of preloaded files, don't append

".elc" (now done in Fload), and call file-truename on the lisp directory.

subr.el (eval-after-load): Fix the doc-string.  Allow FILE to match ANY
loaded file with the right name, not just those in load-path.  Put a
regexp matching the file name into after-load-alist, rather than the name
itself.

subr.el: New functions load-history-regexp,
load-history-filename-element, do-after-load-evaluation.

international/mule.el (load-with-code-conversion): Do the eval-after-load
stuff by calling do-after-load-evaluation.
This commit is contained in:
Alan Mackenzie 2006-05-24 13:22:12 +00:00
parent a386b0959d
commit 33d74677e7
3 changed files with 92 additions and 31 deletions

View file

@ -98,9 +98,9 @@ Return t if file exists."
))
(let (kill-buffer-hook kill-buffer-query-functions)
(kill-buffer buffer)))
(let ((hook (assoc file after-load-alist)))
(when hook
(mapcar (function eval) (cdr hook))))
(unless purify-flag
(do-after-load-evaluation fullname))
(unless (or nomessage noninteractive)
(if source
(message "Loading %s (source)...done" file)

View file

@ -644,18 +644,17 @@ or `CVS', and any subdirectory that contains a file named `.nosearch'."
;; Convert preloaded file names to absolute.
(let ((lisp-dir
(file-truename
(file-name-directory
(locate-file "simple" load-path
(get-load-suffixes)))))
(get-load-suffixes))))))
(setq load-history
(mapcar (lambda (elt)
(if (and (stringp (car elt))
(not (file-name-absolute-p (car elt))))
(cons (concat lisp-dir
(car elt)
(if (string-match "[.]el$" (car elt))
"" ".elc"))
(car elt))
(cdr elt))
elt))
load-history)))

View file

@ -1393,32 +1393,94 @@ That function's doc string says which file created it."
t))
nil))
(defun load-history-regexp (file)
"Form a regexp to find FILE in load-history.
FILE, a string, is described in eval-after-load's doc-string."
(if (file-name-absolute-p file)
(setq file (file-truename file)))
(concat (if (file-name-absolute-p file) "\\`" "\\<")
(regexp-quote file)
(if (file-name-extension file)
""
;; Note: regexp-opt can't be used here, since we need to call
;; this before Emacs has been fully started. 2006-05-21
(concat "\\(" (mapconcat 'regexp-quote load-suffixes "\\|") "\\)?"))
"\\(" (mapconcat 'regexp-quote jka-compr-load-suffixes "\\|")
"\\)?\\'"))
(defun load-history-filename-element (file-regexp)
"Get the first elt of load-history whose car matches FILE-REGEXP.
Return nil if there isn't one."
(let* ((loads load-history)
(load-elt (and loads (car loads))))
(save-match-data
(while (and loads
(or (null (car load-elt))
(not (string-match file-regexp (car load-elt)))))
(setq loads (cdr loads)
load-elt (and loads (car loads)))))
load-elt))
(defun eval-after-load (file form)
"Arrange that, if FILE is ever loaded, FORM will be run at that time.
This makes or adds to an entry on `after-load-alist'.
If FILE is already loaded, evaluate FORM right now.
It does nothing if FORM is already on the list for FILE.
FILE must match exactly. Normally FILE is the name of a library,
with no directory or extension specified, since that is how `load'
is normally called.
FILE can also be a feature (i.e. a symbol), in which case FORM is
evaluated whenever that feature is `provide'd."
(let ((elt (assoc file after-load-alist)))
;; Make sure there is an element for FILE.
(unless elt (setq elt (list file)) (push elt after-load-alist))
;; Add FORM to the element if it isn't there.
If a matching file is loaded again, FORM will be evaluated again.
If FILE is a string, it may be either an absolute or a relative file
name, and may have an extension \(e.g. \".el\") or may lack one, and
additionally may or may not have an extension denoting a compressed
format \(e.g. \".gz\").
When FILE is absolute, it is first converted to a true name by chasing
out symbolic links. Only a file of this name \(see next paragraph for
extensions) will trigger the evaluation of FORM. When FILE is relative,
a file whose absolute true name ends in FILE will trigger evaluation.
When FILE lacks an extension, a file name with any extension will trigger
evaluation. Otherwise, its extension must match FILE's. A further
extension for a compressed format \(e.g. \".gz\") on FILE will not affect
this name matching.
Alternatively, FILE can be a feature (i.e. a symbol), in which case FORM
is evaluated whenever that feature is `provide'd.
Usually FILE is just a library name like \"font-lock\" or a feature name
like 'font-lock.
This function makes or adds to an entry on `after-load-alist'."
;; Add this FORM into after-load-alist (regardless of whether we'll be
;; evaluating it now).
(let* ((regexp-or-feature
(if (stringp file) (load-history-regexp file) file))
(elt (assoc regexp-or-feature after-load-alist)))
(unless elt
(setq elt (list regexp-or-feature))
(push elt after-load-alist))
;; Add FORM to the element unless it's already there.
(unless (member form (cdr elt))
(nconc elt (list form))
;; If the file has been loaded already, run FORM right away.
(if (if (symbolp file)
(featurep file)
;; Make sure `load-history' contains the files dumped with
;; Emacs for the case that FILE is one of them.
;; (load-symbol-file-load-history)
(when (locate-library file)
(assoc (locate-library file) load-history)))
(nconc elt (list form)))
;; Is there an already loaded file whose name (or `provide' name)
;; matches FILE?
(if (if (stringp file)
(load-history-filename-element regexp-or-feature)
(featurep file))
(eval form))))
form)
(defun do-after-load-evaluation (abs-file)
"Evaluate all `eval-after-load' forms, if any, for ABS-FILE.
ABS-FILE, a string, should be the absolute true name of a file just loaded."
(let ((after-load-elts after-load-alist)
a-l-element file-elements file-element form)
(while after-load-elts
(setq a-l-element (car after-load-elts)
after-load-elts (cdr after-load-elts))
(when (and (stringp (car a-l-element))
(string-match (car a-l-element) abs-file))
(while (setq a-l-element (cdr a-l-element)) ; discard the file name
(setq form (car a-l-element))
(eval form))))))
(defun eval-next-after-load (file)
"Read the following input sexp, and run it whenever FILE is loaded.