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Font-lock elisp macros/special forms dynamically

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* emacs-lisp/lisp-mode.el (lisp--el-macro-regexp): New defconst.
(lisp--el-update-macro-regexp, lisp--el-update-after-load)
(lisp--el-match-macro): New functions.
(lisp-mode-variables): Update lisp--el-macro-regexp and add
lisp--el-update-after-load to after-load-functions.
This commit is contained in:
Tassilo Horn 2015-03-14 09:27:31 +01:00
parent 994168240a
commit 51e7e463e9
2 changed files with 42 additions and 2 deletions
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8
lisp/ChangeLog
View file

@ -1,3 +1,11 @@
2015-03-15 Tassilo Horn <tsdh@gnu.org>
* emacs-lisp/lisp-mode.el (lisp--el-macro-regexp): New defconst.
(lisp--el-update-macro-regexp, lisp--el-update-after-load)
(lisp--el-match-macro): New functions.
(lisp-mode-variables): Update lisp--el-macro-regexp and add
lisp--el-update-after-load to after-load-functions.
2015-03-15 Daniel Colascione <dancol@dancol.org>
* emacs-lisp/cl-indent.el

36
lisp/emacs-lisp/lisp-mode.el
View file

@ -181,6 +181,33 @@
nil)))
res))
(defconst lisp--el-macro-regexp nil
"A regular expression matching all loaded elisp macros.
Can be updated using `lisp--el-update-macro-regexp' after new
macros were defined.")
(defun lisp--el-update-macro-regexp ()
"Update `lisp--el-update-macro-regexp' from `obarray'.
Return non-nil only if the old and new value are different."
(let ((old-regex lisp--el-macro-regexp)
(elisp-macros nil))
(mapatoms (lambda (a)
(when (or (macrop a) (special-form-p a))
(push (symbol-name a) elisp-macros))))
(setq lisp--el-macro-regexp
(concat "(" (regexp-opt elisp-macros t) "\\_>"))
(not (string= old-regex lisp--el-macro-regexp))))
(defun lisp--el-update-after-load (_file)
"Update `lisp--el-macro-regexp' and adjust font-lock in existing buffers."
(when (lisp--el-update-macro-regexp)
(dolist (buf (buffer-list))
(when (derived-mode-p 'emacs-lisp-mode)
(font-lock-flush)))))
(defun lisp--el-match-macro (limit)
(re-search-forward lisp--el-macro-regexp limit t))
(pcase-let
((`(,vdefs ,tdefs
,el-defs-re ,cl-defs-re
@ -194,7 +221,9 @@
"when" "unless" "with-output-to-string"
"ignore-errors" "dotimes" "dolist" "declare"))
(lisp-errs '("warn" "error" "signal"))
;; Elisp constructs. FIXME: update dynamically from obarray.
;; Elisp constructs. Now they are update dynamically
;; from obarray but they are also used for setting up
;; the keywords for Common Lisp.
(el-fdefs '("define-advice" "defadvice" "defalias"
"define-derived-mode" "define-minor-mode"
"define-generic-mode" "define-global-minor-mode"
@ -333,7 +362,7 @@
`( ;; Regexp negated char group.
("\\[\\(\\^\\)" 1 font-lock-negation-char-face prepend)
;; Control structures. Common Lisp forms.
(,(concat "(" el-kws-re "\\_>") . 1)
(lisp--el-match-macro . 1)
;; Exit/Feature symbols as constants.
(,(concat "(\\(catch\\|throw\\|featurep\\|provide\\|require\\)\\_>"
"[ \t']*\\(\\(?:\\sw\\|\\s_\\)+\\)?")
@ -514,6 +543,9 @@ font-lock keywords will not be case sensitive."
. lisp-font-lock-syntactic-face-function)))
(setq-local prettify-symbols-alist lisp--prettify-symbols-alist)
(when elisp
(unless lisp--el-macro-regexp
(lisp--el-update-macro-regexp))
(add-hook 'after-load-functions #'lisp--el-update-after-load)
(setq-local electric-pair-text-pairs
(cons '(?\` . ?\') electric-pair-text-pairs)))
(setq-local electric-pair-skip-whitespace 'chomp)