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Integrate ruby-mode with electric-indent-mode better

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* lisp/progmodes/ruby-mode.el (ruby--at-indentation-p): New function,
extracted from `ruby-smie-rules'.
(ruby--electric-indent-chars): New variable.
(ruby--electric-indent-p): New function.
(ruby-mode): Use `electric-indent-functions' instead of
`electric-indent-chars'.
This commit is contained in:
Dmitry Gutov 2013-12-22 06:57:00 +02:00
parent 44b9b800f1
commit 6cddebc11b
3 changed files with 43 additions and 3 deletions
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2
etc/NEWS
View file

@ -599,6 +599,8 @@ rather than mboxo. Customize `unrmail-mbox-format' to change this.
*** New option `ruby-align-to-stmt-keywords'.
*** New `electric-indent-mode' integration.
** Search and Replace
*** New global command `M-s .' (`isearch-forward-symbol-at-point')

9
lisp/ChangeLog
View file

@ -1,3 +1,12 @@
2013-12-22 Dmitry Gutov <dgutov@yandex.ru>
* progmodes/ruby-mode.el (ruby--at-indentation-p): New function,
extracted from `ruby-smie-rules'.
(ruby--electric-indent-chars): New variable.
(ruby--electric-indent-p): New function.
(ruby-mode): Use `electric-indent-functions' instead of
`electric-indent-chars'.
2013-12-22 Dmitry Gutov <dgutov@yandex.ru>
* progmodes/ruby-mode.el (ruby-align-to-stmt-keywords): Tweak the

35
lisp/progmodes/ruby-mode.el
View file

@ -631,12 +631,19 @@ It is used when `ruby-encoding-magic-comment-style' is set to `custom'."
ruby-indent-level))
(`(:after . ,(or "?" ":")) ruby-indent-level)
(`(:before . ,(or "if" "while" "unless" "until" "begin" "case" "for"))
(when (not (save-excursion (skip-chars-backward " \t") (bolp)))
(when (not (ruby--at-indentation-p))
(if (ruby-smie--indent-to-stmt-p token)
(ruby-smie--indent-to-stmt)
(cons 'column (current-column)))))
))
(defun ruby--at-indentation-p (&optional point)
(save-excursion
(unless point (setq point (point)))
(forward-line 0)
(skip-chars-forward " \t")
(eq (point) point)))
(defun ruby-imenu-create-index-in-block (prefix beg end)
"Create an imenu index of methods inside a block."
(let ((index-alist '()) (case-fold-search nil)
@ -767,6 +774,29 @@ The style of the comment is controlled by `ruby-encoding-magic-comment-style'."
(when (buffer-modified-p)
(basic-save-buffer-1)))))))
(defvar ruby--electric-indent-chars '(?. ?\) ?} ?\]))
(defun ruby--electric-indent-p (char)
(cond
((memq char ruby--electric-indent-chars)
;; Outdent after typing a closing paren.
(ruby--at-indentation-p (1- (point))))
((memq (char-after) ruby--electric-indent-chars)
;; Reindent after inserting something before a closing paren.
(ruby--at-indentation-p (1- (point))))
((or (memq (char-syntax char) '(?w ?_)))
(let ((pt (point)))
(save-excursion
(skip-syntax-backward "w_")
(and (ruby--at-indentation-p)
(looking-at (regexp-opt (cons "end" ruby-block-mid-keywords)))
;; Outdent after typing a keyword.
(or (eq (match-end 0) pt)
;; Reindent if it wasn't a keyword after all.
(eq (match-end 0) (1- pt)))))))))
;; FIXME: Remove this? It's unused here, but some redefinitions of
;; `ruby-calculate-indent' in user init files still call it.
(defun ruby-current-indentation ()
"Return the indentation level of current line."
(save-excursion
@ -2081,8 +2111,7 @@ See `font-lock-syntax-table'.")
(setq-local end-of-defun-function 'ruby-end-of-defun)
(add-hook 'after-save-hook 'ruby-mode-set-encoding nil 'local)
(setq-local electric-indent-chars (append '(?\{ ?\}) electric-indent-chars))
(add-hook 'electric-indent-functions 'ruby--electric-indent-p nil 'local)
(setq-local font-lock-defaults '((ruby-font-lock-keywords) nil nil))
(setq-local font-lock-keywords ruby-font-lock-keywords)