;; (not (or (eolp) (looking-at "#")
;; (and (eq (car (nth 1 state)) ?{)
;; (looking-at "|"))))))
- ;; Not a regexp or general delimited literal.
+ ;; Not a regexp or percent literal.
(null (nth 0 (ruby-parse-region (or begin parse-start)
(point))))
(or (not (eq ?| (char-after (point))))
(ruby-do-end-to-brace)))
(declare-function ruby-syntax-propertize-heredoc "ruby-mode" (limit))
-(declare-function ruby-syntax-general-delimiters-goto-beg "ruby-mode" ())
-(declare-function ruby-syntax-propertize-general-delimiters "ruby-mode" (limit))
+(declare-function ruby-syntax-enclosing-percent-literal "ruby-mode" (limit))
+(declare-function ruby-syntax-propertize-percent-literal "ruby-mode" (limit))
(if (eval-when-compile (fboundp #'syntax-propertize-rules))
;; New code that works independently from font-lock.
(progn
+ (eval-and-compile
+ (defconst ruby-percent-literal-beg-re
+ "\\(%\\)[qQrswWx]?\\([[:punct:]]\\)"
+ "Regexp to match the beginning of percent literal."))
+
(defun ruby-syntax-propertize-function (start end)
"Syntactic keywords for Ruby mode. See `syntax-propertize-function'."
(goto-char start)
(ruby-syntax-propertize-heredoc end)
- (ruby-syntax-general-delimiters-goto-beg)
+ (ruby-syntax-enclosing-percent-literal end)
(funcall
(syntax-propertize-rules
;; #{ }, #$hoge, #@foo are not comments.
'syntax-table (string-to-syntax "\""))
(ruby-syntax-propertize-heredoc end))))
;; Handle percent literals: %w(), %q{}, etc.
- ("\\(?:^\\|[[ \t\n<+(,=]\\)\\(%\\)[qQrswWx]?\\([[:punct:]]\\)"
- (1 (prog1 "|" (ruby-syntax-propertize-general-delimiters end)))))
+ ((concat "\\(?:^\\|[[ \t\n<+(,=]\\)" ruby-percent-literal-beg-re)
+ (1 (prog1 "|" (ruby-syntax-propertize-percent-literal end)))))
(point) end))
(defun ruby-syntax-propertize-heredoc (limit)
;; inf-loop.
(if (< (point) start) (goto-char start))))))
- (defun ruby-syntax-general-delimiters-goto-beg ()
- (let ((state (syntax-ppss)))
- ;; Move to the start of the literal, in case it's multiline.
- ;; TODO: determine the literal type more reliably here?
+ (defun ruby-syntax-enclosing-percent-literal (limit)
+ (let ((state (syntax-ppss))
+ (start (point)))
+ ;; When already inside percent literal, re-propertize it.
(when (eq t (nth 3 state))
(goto-char (nth 8 state))
- (beginning-of-line))))
+ (when (looking-at ruby-percent-literal-beg-re)
+ (ruby-syntax-propertize-percent-literal limit))
+ (when (< (point) start) (goto-char start)))))
- (defun ruby-syntax-propertize-general-delimiters (limit)
+ (defun ruby-syntax-propertize-percent-literal (limit)
(goto-char (match-beginning 2))
- (let* ((op (char-after))
- (ops (char-to-string op))
- (cl (or (cdr (aref (syntax-table) op))
- (cdr (assoc op '((?< . ?>))))))
- parse-sexp-lookup-properties)
- (ignore-errors
- (if cl
- (progn ; Paired delimiters.
- ;; Delimiter pairs of the same kind can be nested
- ;; inside the literal, as long as they are balanced.
- ;; Create syntax table that ignores other characters.
- (with-syntax-table (make-char-table 'syntax-table nil)
- (modify-syntax-entry op (concat "(" (char-to-string cl)))
- (modify-syntax-entry cl (concat ")" ops))
- (modify-syntax-entry ?\\ "\\")
- (save-restriction
- (narrow-to-region (point) limit)
- (forward-list)))) ; skip to the paired character
- ;; Single character delimiter.
- (re-search-forward (concat "[^\\]\\(?:\\\\\\\\\\)*"
- (regexp-quote ops)) limit nil))
- ;; If we reached here, the closing delimiter was found.
- (put-text-property (1- (point)) (point)
- 'syntax-table (string-to-syntax "|")))))
+ ;; Not inside a simple string or comment.
+ (when (eq t (nth 3 (syntax-ppss)))
+ (let* ((op (char-after))
+ (ops (char-to-string op))
+ (cl (or (cdr (aref (syntax-table) op))
+ (cdr (assoc op '((?< . ?>))))))
+ parse-sexp-lookup-properties)
+ (condition-case nil
+ (progn
+ (if cl ; Paired delimiters.
+ ;; Delimiter pairs of the same kind can be nested
+ ;; inside the literal, as long as they are balanced.
+ ;; Create syntax table that ignores other characters.
+ (with-syntax-table (make-char-table 'syntax-table nil)
+ (modify-syntax-entry op (concat "(" (char-to-string cl)))
+ (modify-syntax-entry cl (concat ")" ops))
+ (modify-syntax-entry ?\\ "\\")
+ (save-restriction
+ (narrow-to-region (point) limit)
+ (forward-list))) ; skip to the paired character
+ ;; Single character delimiter.
+ (re-search-forward (concat "[^\\]\\(?:\\\\\\\\\\)*"
+ (regexp-quote ops)) limit nil))
+ ;; Found the closing delimiter.
+ (put-text-property (1- (point)) (point) 'syntax-table
+ (string-to-syntax "|")))
+ ;; Unclosed literal, leave the following text unpropertized.
+ ((scan-error search-failed) (goto-char limit))))))
)
;; For Emacsen where syntax-propertize-rules is not (yet) available,
(4 (7 . ?/))
(6 (7 . ?/)))
("^=en\\(d\\)\\_>" 1 "!")
- ;; General delimited string.
+ ;; Percent literal.
("\\(^\\|[[ \t\n<+(,=]\\)\\(%[xrqQwW]?\\([^<[{(a-zA-Z0-9 \n]\\)[^\n\\\\]*\\(\\\\.[^\n\\\\]*\\)*\\(\\3\\)\\)"
(3 "\"")
(5 "\""))