我正在为一种语言开发 emacs 主要模式(又名mydsl)。然而,由于某种原因,使用 xahlee 网站上的技术似乎不起作用(可能是较旧的 emacs 方言..)
我正在解决的关键问题是(1)突出显示评论不起作用以及(2)使用regexp-opt
线路不工作。
我已经审阅了 GNU 手册并查看了 cc 模式和 elisp 模式......这些比我需要的要复杂得多。
;;;Standard # to newline comment
;;;Eventually should also have %% to %% multiline block comments
(defun mydsl-comment-dwim (arg)
"comment or uncomment"
(interactive "*P")
(require 'newcomment)
(let
((deactivate-mark nil)
(comment-start "#")
(comment-end "")
comment-dwim arg)))
(defvar mydsl-events
'("reservedword1"
"reservedword2"))
(defvar mydsl-keywords
'("other-keyword" "another-keyword"))
;;Highlight various elements
(setq mydsl-hilite
'(
; stuff between "
("\"\\.\\*\\?" . font-lock-string-face)
; : , ; { } => @ $ = are all special elements
(":\\|,\\|;\\|{\\|}\\|=>\\|@\\|$\\|=" . font-lock-keyword-face)
( ,(regexp-opt mydsl-keywords 'words) . font-lock-builtin-face)
( ,(regexp-opt mydsl-events 'words) . font-lock-constant-face)
))
(defvar mydsl-tab-width nil "Width of a tab for MYDSL mode")
(define-derived-mode mydsl-mode fundamental-mode
"MYDSL mode is a major mode for editing MYDSL files"
;Recommended by manual
(kill-all-local-variables)
(setq mode-name "MYDSL script")
(setq font-lock-defaults '((mydsl-hilite)))
(if (null mydsl-tab-width)
(setq tab-width mydsl-tab-width)
(setq tab-width default-tab-width)
)
;Comment definitions
(define-key mydsl-mode-map [remap comment-dwim] 'mydsl-comment-dwim)
(modify-syntax-entry ?# "< b" mydsl-mode-syntax-table)
(modify-syntax-entry ?\n "> b" mydsl-mode-syntax-table)
;;A gnu-correct program will have some sort of hook call here.
)
(provide 'mydsl-mode)
您的代码中存在一些语法问题,但您的代码几乎是正确的。这是我编辑的版本,它似乎对缓冲区做了正确的事情mydsl-mode
:
; No changes to the simple vars
(defvar mydsl-events
'("reservedword1"
"reservedword2"))
(defvar mydsl-keywords
'("other-keyword" "another-keyword"))
;; I'd probably put in a default that you want, as opposed to nil
(defvar mydsl-tab-width nil "Width of a tab for MYDSL mode")
;; Two small edits.
;; First is to put an extra set of parens () around the list
;; which is the format that font-lock-defaults wants
;; Second, you used ' (quote) at the outermost level where you wanted ` (backquote)
;; you were very close
(defvar mydsl-font-lock-defaults
`((
;; stuff between "
("\"\\.\\*\\?" . font-lock-string-face)
;; ; : , ; { } => @ $ = are all special elements
(":\\|,\\|;\\|{\\|}\\|=>\\|@\\|$\\|=" . font-lock-keyword-face)
( ,(regexp-opt mydsl-keywords 'words) . font-lock-builtin-face)
( ,(regexp-opt mydsl-events 'words) . font-lock-constant-face)
)))
(define-derived-mode mydsl-mode fundamental-mode "MYDSL script"
"MYDSL mode is a major mode for editing MYDSL files"
;; fundamental-mode kills all local variables, no need to do it again
(setq mode-name "MYDSL script")
;; you again used quote when you had '((mydsl-hilite))
;; I just updated the variable to have the proper nesting (as noted above)
;; and use the value directly here
(setq font-lock-defaults mydsl-font-lock-defaults)
;; when there's an override, use it
;; otherwise it gets the default value
(when mydsl-tab-width
(setq tab-width mydsl-tab-width))
;; for comments
;; overriding these vars gets you what (I think) you want
;; they're made buffer local when you set them
(setq comment-start "#")
(setq comment-end "")
(modify-syntax-entry ?# "< b" mydsl-mode-syntax-table)
(modify-syntax-entry ?\n "> b" mydsl-mode-syntax-table)
;;A gnu-correct program will have some sort of hook call here.
)
(provide 'mydsl-mode)
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