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Added a handy backspace binding to the haml-mode.el.

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git-svn-id: svn://hamptoncatlin.com/haml/trunk@401 7063305b-7217-0410-af8c-cdc13e5119b9
This commit is contained in:
nex3 2007-03-08 06:50:46 +00:00
parent e7555b40db
commit 04cd02784b
1 changed files with 25 additions and 1 deletions
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26
extra/haml-mode.el
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@ -25,6 +25,11 @@
:type 'integer
:group 'haml)
(defcustom haml-backspace-function 'backward-delete-char-untabify
"*Function called by `haml-electric-backspace' when deleting backwards."
:type 'function
:group 'haml)
;; Helper Functions
(defun string-* (str i)
@ -42,7 +47,7 @@
(defconst haml-blank-line-re "^[ \t]*$"
"Regexp matching a line containing only whitespace.")
(defconst haml-tag-re (hre "[%\\.#][^ \t]*\\({.*}\\)?\\(\\[.*\\]\\).?[ \t]*$")
(defconst haml-tag-re (hre "[%\\.#][^ \t]*\\({.*}\\)?\\(\\[.*\\]\\)?.?[ \t]*$")
"Regexp matching a Haml tag.")
(defconst haml-block-re (hre "[-=].*do[ \t]*\\(|.*|[ \t]*\\)?$")
@ -70,6 +75,9 @@
(if haml-mode-map
nil
(setq haml-mode-map (make-sparse-keymap))
(define-key haml-mode-map [backspace] 'haml-electric-backspace)
(define-key haml-mode-map "\C-?" 'haml-electric-backspace)
(define-key haml-mode-map "\C-a" 'haml-electric-backspace)
(define-key haml-mode-map "\C-j" 'newline-and-indent))
;(defvar haml-mode-syntax-table nil
@ -129,6 +137,22 @@ back-dent the line by `haml-indent-offset' spaces. On reaching column
(if (< (current-column) (current-indentation))
(forward-to-indentation 0))))
(defun haml-electric-backspace (arg)
"Delete characters or back-dent the current line.
If invoked following only whitespace on a line, will back-dent to the
immediately previous multiple of `haml-indent-offset' spaces."
(interactive "*p")
(if (or (/= (current-indentation) (current-column)) (bolp))
(funcall haml-backspace-function arg)
(let ((ci (current-column)))
(beginning-of-line)
(delete-horizontal-space)
(indent-to (* (/ (- ci (* arg haml-indent-offset))
haml-indent-offset)
haml-indent-offset)))))
;; Setup/Activation
(defun haml-mode-version ()
"Diplay version of `haml-mode'."
(interactive)