;;; sh-script.el --- shell-script editing commands for Emacs
-;; Copyright (C) 1993, 1994, 1995, 1996, 1997, 1999, 2001, 2002, 2003,
-;; 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1997, 1999, 2001-2011 Free Software Foundation, Inc.
;; Author: Daniel Pfeiffer <occitan@esperanto.org>
;; Version: 2.0f
(defconst sh-st-punc (string-to-syntax "."))
(defconst sh-here-doc-syntax (string-to-syntax "|")) ;; generic string
-(defconst sh-escaped-line-re
- ;; Should match until the real end-of-continued-line, but if that is not
- ;; possible (because we bump into EOB or the search bound), then we should
- ;; match until the search bound.
- "\\(?:\\(?:.*[^\\\n]\\)?\\(?:\\\\\\\\\\)*\\\\\n\\)*.*")
-
-(defconst sh-here-doc-open-re
- (concat "<<-?\\s-*\\\\?\\(\\(?:['\"][^'\"]+['\"]\\|\\sw\\)+\\)"
- sh-escaped-line-re "\\(\n\\)"))
-
-(defvar sh-here-doc-markers nil)
-(make-variable-buffer-local 'sh-here-doc-markers)
-(defvar sh-here-doc-re sh-here-doc-open-re)
-(make-variable-buffer-local 'sh-here-doc-re)
-
-(defun sh-font-lock-close-heredoc (bol eof indented eol)
- "Determine the syntax of the \\n after an EOF.
-If non-nil INDENTED indicates that the EOF was indented."
- (let* ((eof-re (if eof (regexp-quote eof) ""))
- ;; A rough regexp that should find the opening <<EOF back.
- (sre (concat "<<\\(-?\\)\\s-*['\"\\]?"
- ;; Use \s| to cheaply check it's an open-heredoc.
- eof-re "['\"]?\\([ \t|;&)<>]"
- sh-escaped-line-re
- "\\)?\\s|"))
- ;; A regexp that will find other EOFs.
- (ere (concat "^" (if indented "[ \t]*") eof-re "\n"))
- (start (save-excursion
- (goto-char bol)
- ;; FIXME: will incorrectly find a <<EOF embedded inside
- ;; the heredoc.
- (re-search-backward (concat sre "\\|" ere) nil t))))
- ;; If subgroup 1 matched, we found an open-heredoc, otherwise we first
- ;; found a close-heredoc which makes the current close-heredoc inoperant.
- (cond
- ((when (and start (match-end 1)
- (not (and indented (= (match-beginning 1) (match-end 1))))
- (not (sh-in-comment-or-string (match-beginning 0))))
- ;; Make sure our `<<' is not the EOF1 of a `cat <<EOF1 <<EOF2'.
- (save-excursion
- (goto-char start)
- (setq start (line-beginning-position 2))
- (while
- (progn
- (re-search-forward "<<") ; Skip ourselves.
- (and (re-search-forward sh-here-doc-open-re start 'move)
- (goto-char (match-beginning 0))
- (sh-in-comment-or-string (point)))))
- ;; No <<EOF2 found after our <<.
- (= (point) start)))
- (put-text-property eol (1+ eol) 'syntax-table sh-here-doc-syntax))
- ((not (or start (save-excursion (re-search-forward sre nil t))))
- ;; There's no <<EOF either before or after us,
- ;; so we should remove ourselves from font-lock's keywords.
- (setq sh-here-doc-markers (delete eof sh-here-doc-markers))
- (setq sh-here-doc-re
- (concat sh-here-doc-open-re "\\|^\\([ \t]*\\)"
- (regexp-opt sh-here-doc-markers t) "\\(\n\\)"))
- nil))))
+(eval-and-compile
+ (defconst sh-escaped-line-re
+ ;; Should match until the real end-of-continued-line, but if that is not
+ ;; possible (because we bump into EOB or the search bound), then we should
+ ;; match until the search bound.
+ "\\(?:\\(?:.*[^\\\n]\\)?\\(?:\\\\\\\\\\)*\\\\\n\\)*.*")
+
+ (defconst sh-here-doc-open-re
+ (concat "<<-?\\s-*\\\\?\\(\\(?:['\"][^'\"]+['\"]\\|\\sw\\|[-/~._]\\)+\\)"
+ sh-escaped-line-re "\\(\n\\)")))
(defun sh-font-lock-open-heredoc (start string eol)
"Determine the syntax of the \\n after a <<EOF.
(sh-in-comment-or-string start))
;; We're looking at <<STRING, so we add "^STRING$" to the syntactic
;; font-lock keywords to detect the end of this here document.
- (let ((str (replace-regexp-in-string "['\"]" "" string)))
- (unless (member str sh-here-doc-markers)
- (push str sh-here-doc-markers)
- (setq sh-here-doc-re
- (concat sh-here-doc-open-re "\\|^\\([ \t]*\\)"
- (regexp-opt sh-here-doc-markers t) "\\(\n\\)"))))
- (let ((ppss (save-excursion (syntax-ppss (1- (point))))))
+ (let ((str (replace-regexp-in-string "['\"]" "" string))
+ (ppss (save-excursion (syntax-ppss eol))))
(if (nth 4 ppss)
;; The \n not only starts the heredoc but also closes a comment.
;; Let's close the comment just before the \n.
- (put-text-property (1- (point)) (point) 'syntax-table '(12))) ;">"
- (if (or (nth 5 ppss) (> (count-lines start (point)) 1))
- ;; If the sh-escaped-line-re part of sh-here-doc-re has matched
+ (put-text-property (1- eol) eol 'syntax-table '(12))) ;">"
+ (if (or (nth 5 ppss) (> (count-lines start eol) 1))
+ ;; If the sh-escaped-line-re part of sh-here-doc-open-re has matched
;; several lines, make sure we refontify them together.
;; Furthermore, if (nth 5 ppss) is non-nil (i.e. the \n is
;; escaped), it means the right \n is actually further down.
;; Don't bother fixing it now, but place a multiline property so
;; that when jit-lock-context-* refontifies the rest of the
;; buffer, it also refontifies the current line with it.
- (put-text-property start (point) 'syntax-multiline t)))
- (put-text-property eol (1+ eol) 'syntax-table sh-here-doc-syntax)))
+ (put-text-property start (1+ eol) 'syntax-multiline t))
+ (put-text-property eol (1+ eol) 'sh-here-doc-marker str)
+ (prog1 sh-here-doc-syntax
+ (goto-char (+ 2 start))))))
+
+(defun sh-syntax-propertize-here-doc (end)
+ (let ((ppss (syntax-ppss)))
+ (when (eq t (nth 3 ppss))
+ (let ((key (get-text-property (nth 8 ppss) 'sh-here-doc-marker)))
+ (when (re-search-forward
+ (concat "^\\([ \t]*\\)" (regexp-quote key) "\\(\n\\)")
+ end 'move)
+ (let ((eol (match-beginning 2)))
+ (put-text-property eol (1+ eol)
+ 'syntax-table sh-here-doc-syntax)))))))
(defun sh-font-lock-quoted-subshell (limit)
"Search for a subshell embedded in a string.
(not (sh-is-quoted-p (1- pos)))))
(defun sh-font-lock-paren (start)
+ (unless (nth 8 (syntax-ppss))
(save-excursion
(goto-char start)
;; Skip through all patterns
(while
(progn
+ (while
+ (progn
(forward-comment (- (point-max)))
+ (when (and (eolp) (sh-is-quoted-p (point)))
+ (forward-char -1)
+ t)))
;; Skip through one pattern
(while
(or (/= 0 (skip-syntax-backward "w_"))
- (/= 0 (skip-chars-backward "?[]*@/\\"))
+ (/= 0 (skip-chars-backward "-$=?[]*@/\\\\"))
(and (sh-is-quoted-p (1- (point)))
(goto-char (- (point) 2)))
- (when (memq (char-before) '(?\" ?\'))
+ (when (memq (char-before) '(?\" ?\' ?\}))
(condition-case nil (progn (backward-sexp 1) t)
(error nil)))))
;; Patterns can be preceded by an open-paren (Bug#1320).
(backward-char 1))
(when (eq (char-before) ?|)
(backward-char 1) t)))
- ;; FIXME: ";; esac )" is a case that looks like a case-pattern but it's
- ;; really just a close paren after a case statement. I.e. if we skipped
- ;; over `esac' just now, we're not looking at a case-pattern.
(when (progn (backward-char 2)
(if (> start (line-end-position))
(put-text-property (point) (1+ start)
;; a normal command rather than the real `in' keyword.
;; I.e. we should look back to try and find the
;; corresponding `case'.
- (looking-at ";;\\|in"))
- sh-st-punc)))
+ (and (looking-at ";[;&]\\|in")
+ ;; ";; esac )" is a case that looks like a case-pattern
+ ;; but it's really just a close paren after a case
+ ;; statement. I.e. if we skipped over `esac' just now,
+ ;; we're not looking at a case-pattern.
+ (not (looking-at "..[ \t\n]+esac[^[:word:]_]"))))
+ sh-st-punc))))
(defun sh-font-lock-backslash-quote ()
(if (eq (save-excursion (nth 3 (syntax-ppss (match-beginning 0)))) ?\')
(defun sh-syntax-propertize-function (start end)
(goto-char start)
- (while (prog1
- (re-search-forward sh-here-doc-re end 'move)
+ (sh-syntax-propertize-here-doc end)
+ (funcall
+ (syntax-propertize-rules
+ (sh-here-doc-open-re
+ (2 (sh-font-lock-open-heredoc
+ (match-beginning 0) (match-string 1) (match-beginning 2))))
+ ("\\s|" (0 (prog1 nil (sh-syntax-propertize-here-doc end))))
+ ;; A `#' begins a comment when it is unquoted and at the
+ ;; beginning of a word. In the shell, words are separated by
+ ;; metacharacters. The list of special chars is taken from
+ ;; the single-unix spec of the shell command language (under
+ ;; `quoting') but with `$' removed.
+ ("[^|&;<>()`\\\"' \t\n]\\(#+\\)" (1 "_"))
+ ;; In a '...' the backslash is not escaping.
+ ("\\(\\\\\\)'" (1 (sh-font-lock-backslash-quote)))
+ ;; Make sure $@ and $? are correctly recognized as sexps.
+ ("\\$\\([?@]\\)" (1 "_"))
+ ;; Distinguish the special close-paren in `case'.
+ (")" (0 (sh-font-lock-paren (match-beginning 0))))
+ ;; Highlight (possibly nested) subshells inside "" quoted
+ ;; regions correctly.
+ ("\"\\(?:\\(?:[^\\\"]\\|\\)*?[^\\]\\(?:\\\\\\\\\\)*\\)??\\(\\$(\\|`\\)"
+ (1 (ignore
+ ;; Save excursion because we want to also apply other
+ ;; syntax-propertize rules within the affected region.
+ (if (nth 8 (syntax-ppss))
+ (goto-char (1+ (match-beginning 0)))
(save-excursion
- (save-match-data
- (funcall
- (syntax-propertize-rules
- ;; A `#' begins a comment when it is unquoted and at the
- ;; beginning of a word. In the shell, words are separated by
- ;; metacharacters. The list of special chars is taken from
- ;; the single-unix spec of the shell command language (under
- ;; `quoting') but with `$' removed.
- ("[^|&;<>()`\\\"' \t\n]\\(#+\\)" (1 "_"))
- ;; In a '...' the backslash is not escaping.
- ("\\(\\\\\\)'" (1 (sh-font-lock-backslash-quote)))
- ;; Make sure $@ and $? are correctly recognized as sexps.
- ("\\$\\([?@]\\)" (1 "_"))
- ;; Distinguish the special close-paren in `case'.
- (")" (0 (sh-font-lock-paren (match-beginning 0))))
- ;; Highlight (possibly nested) subshells inside "" quoted
- ;; regions correctly.
- ("\"\\(?:\\(?:.\\|\n\\)*?[^\\]\\(?:\\\\\\\\\\)*\\)??\\(\\$(\\|`\\)"
- (1 (ignore
- ;; Save excursion because we want to also apply other
- ;; syntax-propertize rules within the affected region.
- (save-excursion
- (sh-font-lock-quoted-subshell end))))))
- (prog1 start (setq start (point))) (point)))))
- (if (match-beginning 2)
- ;; FIXME: actually, once we see an heredoc opener, we should just
- ;; search for its ender without propertizing anything in it.
- (sh-font-lock-open-heredoc
- (match-beginning 0) (match-string 1) (match-beginning 2))
- (sh-font-lock-close-heredoc
- (match-beginning 0) (match-string 4)
- (and (match-beginning 3) (/= (match-beginning 3) (match-end 3)))
- (match-beginning 5)))))
+ (sh-font-lock-quoted-subshell end)))))))
+ (point) end))
(defun sh-font-lock-syntactic-face-function (state)
(let ((q (nth 3 state)))
("esac" sh-handle-this-esac sh-handle-prev-esac)
(case-label nil sh-handle-after-case-label) ;; ???
(";;" nil sh-handle-prev-case-alt-end) ;; ???
+ (";;&" nil sh-handle-prev-case-alt-end) ;Like ";;" with diff semantics.
+ (";&" nil sh-handle-prev-case-alt-end) ;Like ";;" with diff semantics.
("done" sh-handle-this-done sh-handle-prev-done)
("do" sh-handle-this-do sh-handle-prev-do))
(sh-prev-line nil)
(line-beginning-position))))
(skip-chars-backward " \t;" min-point)
- (if (looking-at "\\s-*;;")
+ (if (looking-at "\\s-*;[;&]")
;; (message "Found ;; !")
";;"
(skip-chars-backward "^)}];\"'`({[" min-point)
HCoop / bpt / emacs.git / blobdiff