guix/gnu/packages/patches/emacs-constants-lisp-like.patch
Federico Beffa e5045f303a gnu: Add emacs-constants.
* gnu/packages/emacs.scm (emacs-constants): New variable.
* gnu/packages/patches/emacs-constants-lisp-like.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.
2016-02-03 10:48:36 +01:00

81 lines
3.1 KiB
Diff

Add Scheme support
--- constants/constants.el.orig 2015-12-26 17:44:31.734520833 +0100
+++ constants/constants.el 2015-12-30 17:41:28.402871263 +0100
@@ -684,6 +684,33 @@
(eval-when-compile (defvar ctable))
+(defun constants-is-lisp-like (mode)
+ (save-match-data
+ (string-match "\\(lisp\\|scheme\\)" (symbol-name mode))))
+
+(defun constants-is-set-like ()
+ (save-excursion
+ (condition-case nil
+ (save-match-data
+ (progn (up-list -1)
+ (or (looking-at "(set[qf!]?\\>") (looking-at "(define\\>"))))
+ (error nil)))) ; return value nil means use default
+
+;;;###autoload
+(defun constants-lisp-like-function ()
+ "Check context for constants insertion."
+ (if (constants-is-set-like)
+ '(emacs-lisp-mode "%n %v%t; %d %u" "e" "(* %p %v)")
+ '(emacs-lisp-mode "(%n %v)%t; %d %u" "e" "(* %p %v)")))
+
+;;;###autoload
+(mapc (lambda (mode-hook)
+ (add-hook mode-hook
+ (lambda ()
+ (setq constants-language-function
+ 'constants-lisp-like-function))))
+ '(scheme-mode-hook emacs-lisp-mode-hook lisp-mode-hook))
+
;;;###autoload
(defun constants-insert (&optional unit-system names)
"Insert one or more natural constant definitions in source code.
@@ -826,8 +853,9 @@
(funcall process-func ins))
;; Here comes the insertion stuff for source code editing modes.
;; First make sure we start a new line
- (if (string-match
- "\\S-" (buffer-substring (point-at-bol) (point-at-eol)))
+ (if (and (string-match
+ "\\S-" (buffer-substring (point-at-bol) (point-at-eol)))
+ (not (constants-is-lisp-like mode)))
;; non-empty line, insert after this line
(progn
(end-of-line 1)
@@ -841,13 +869,24 @@
(if (string-match "\\(.*\\)%t\\(.*\\)" line)
(let ((comment-column 42))
(insert (match-string 1 line))
- (indent-to comment-column)
- (insert (match-string 2 line)))
+ (if (and (constants-is-lisp-like mode)
+ (or (constants-is-set-like)
+ (null clist)))
+ (save-excursion
+ (progn
+ (move-to-column comment-column t)
+ (insert (match-string 2 line))
+ ;; insert a newline such that paredit's M-) can mode
+ ;; the closing parentheses to the next line.
+ (newline-and-indent)))
+ (progn
+ (indent-to comment-column)
+ (insert (match-string 2 line)))))
(insert line)))
- (if constants-indent-code
- (newline-and-indent)
- (newline))))))
-
+ (unless (and (constants-is-lisp-like mode) (null clist))
+ (if constants-indent-code
+ (newline-and-indent)
+ (newline)))))))
;;;###autoload
(defun constants-get (&optional const message)
"Return the value of CONST as defined in the constants package.