我需要拼写检查包含许多驼峰单词的大型文档。我想要 ispell 或 aspell 检查单个单词是否拼写正确。
所以，如果是这个词：
ScientificProgrezGoesBoink
我很想让它建议这个：
ScientificProgressGoesBoink
有没有办法做到这一点？（我的意思是，在 Emacs 缓冲区上运行它时。）请注意，我不一定希望它提出完整的替代方案。但是，如果它知道 Progrez 未被识别，我希望能够至少替换该部分，或者将该词添加到我的私人词典中，而不是将每个骆驼大写的词都包含在词典中。
我接受了@phils 的建议，并深入挖掘了一些。事实证明，如果你得到camelCase-mode并像这样重新配置一些 ispell ：
(defun ispell-get-word (following)
(when following
(camelCase-forward-word 1))
(let* ((start (progn (camelCase-backward-word 1)
(point)))
(end (progn (camelCase-forward-word 1)
(point))))
(list (buffer-substring-no-properties start end)
start end)))
然后，在这种情况下，单个驼峰式单词，例如 AsThisOne，实际上将被正确地进行拼写检查。（除非你在文档的开头——我刚刚发现。）
所以这显然不是完整的解决方案，但至少它是一些东西。
aspell 中有“--run-together”选项。Hunspell 无法检查驼峰式单词。
如果你阅读 aspell 的代码，你会发现它的算法实际上并没有将驼峰单词拆分成一个子单词列表。也许这个算法更快，但它会错误地将包含两个字符子词的单词报告为拼写错误。不要浪费时间来调整其他 aspell 选项。我试过了，但它们没有用。
所以我们遇到了两个问题：
aspell 将一些驼峰式单词报告为拼写错误
hunspell 将所有驼峰式单词报告为拼写错误
解决这两个问题的解决方案是在 Emacs Lisp 中编写我们自己的谓词。
这是为 javascript 编写的示例谓词：
(defun split-camel-case (word)
"Split camel case WORD into a list of strings.
Ported from 'https://github.com/fatih/camelcase/blob/master/camelcase.go'."
(let* ((case-fold-search nil)
(len (length word))
;; ten sub-words is enough
(runes [nil nil nil nil nil nil nil nil nil nil])
(runes-length 0)
(i 0)
ch
(last-class 0)
(class 0)
rlt)
;; split into fields based on class of character
(while (< i len)
(setq ch (elt word i))
(cond
;; lower case
((and (>= ch ?a) (<= ch ?z))
(setq class 1))
;; upper case
((and (>= ch ?A) (<= ch ?Z))
(setq class 2))
((and (>= ch ?0) (<= ch ?9))
(setq class 3))
(t
(setq class 4)))
(cond
((= class last-class)
(aset runes
(1- runes-length)
(concat (aref runes (1- runes-length)) (char-to-string ch))))
(t
(aset runes runes-length (char-to-string ch))
(setq runes-length (1+ runes-length))))
(setq last-class class)
;; end of while
(setq i (1+ i)))
;; handle upper case -> lower case sequences, e.g.
;; "PDFL", "oader" -> "PDF", "Loader"
(setq i 0)
(while (< i (1- runes-length))
(let* ((ch-first (aref (aref runes i) 0))
(ch-second (aref (aref runes (1+ i)) 0)))
(when (and (and (>= ch-first ?A) (<= ch-first ?Z))
(and (>= ch-second ?a) (<= ch-second ?z)))
(aset runes (1+ i) (concat (substring (aref runes i) -1) (aref runes (1+ i))))
(aset runes i (substring (aref runes i) 0 -1))))
(setq i (1+ i)))
;; construct final result
(setq i 0)
(while (< i runes-length)
(when (> (length (aref runes i)) 0)
(setq rlt (add-to-list 'rlt (aref runes i) t)))
(setq i (1+ i)))
rlt))
(defun flyspell-detect-ispell-args (&optional run-together)
"If RUN-TOGETHER is true, spell check the CamelCase words.
Please note RUN-TOGETHER will make aspell less capable. So it should only be used in prog-mode-hook."
;; force the English dictionary, support Camel Case spelling check (tested with aspell 0.6)
(let* ((args (list "--sug-mode=ultra" "--lang=en_US"))args)
(if run-together
(setq args (append args '("--run-together" "--run-together-limit=16"))))
args))
;; {{ for aspell only, hunspell does not need setup `ispell-extra-args'
(setq ispell-program-name "aspell")
(setq-default ispell-extra-args (flyspell-detect-ispell-args t))
;; }}
;; ;; {{ hunspell setup, please note we use dictionary "en_US" here
;; (setq ispell-program-name "hunspell")
;; (setq ispell-local-dictionary "en_US")
;; (setq ispell-local-dictionary-alist
;; '(("en_US" "[[:alpha:]]" "[^[:alpha:]]" "[']" nil ("-d" "en_US") nil utf-8)))
;; ;; }}
(defvar extra-flyspell-predicate '(lambda (word) t)
"A callback to check WORD. Return t if WORD is typo.")
(defun my-flyspell-predicate (word)
"Use aspell to check WORD. If it's typo return t."
(let* ((cmd (cond
;; aspell: `echo "helle world" | aspell pipe`
((string-match-p "aspell$" ispell-program-name)
(format "echo \"%s\" | %s pipe"
word
ispell-program-name))
;; hunspell: `echo "helle world" | hunspell -a -d en_US`
(t
(format "echo \"%s\" | %s -a -d en_US"
word
ispell-program-name))))
(cmd-output (shell-command-to-string cmd))
rlt)
;; (message "word=%s cmd=%s" word cmd)
;; (message "cmd-output=%s" cmd-output)
(cond
((string-match-p "^&" cmd-output)
;; it's a typo because at least one sub-word is typo
(setq rlt t))
(t
;; not a typo
(setq rlt nil)))
rlt))
(defun js-flyspell-verify ()
(let* ((case-fold-search nil)
(font-matched (memq (get-text-property (- (point) 1) 'face)
'(js2-function-call
js2-function-param
js2-object-property
js2-object-property-access
font-lock-variable-name-face
font-lock-string-face
font-lock-function-name-face
font-lock-builtin-face
rjsx-text
rjsx-tag
rjsx-attr)))
subwords
word
(rlt t))
(cond
((not font-matched)
(setq rlt nil))
;; ignore two character word
((< (length (setq word (thing-at-point 'word))) 2)
(setq rlt nil))
;; handle camel case word
((and (setq subwords (split-camel-case word)) (> (length subwords) 1))
(let* ((s (mapconcat (lambda (w)
(cond
;; sub-word wholse length is less than three
((< (length w) 3)
"")
;; special characters
((not (string-match-p "^[a-zA-Z]*$" w))
"")
(t
w))) subwords " ")))
(setq rlt (my-flyspell-predicate s))))
(t
(setq rlt (funcall extra-flyspell-predicate word))))
rlt))
(put 'js2-mode 'flyspell-mode-predicate 'js-flyspell-verify)
或者只是使用我的新包https://github.com/redguardtoo/wucuo
您应该解析骆驼大小写的单词并将它们拆分，然后检查每个单词的单独拼写，并根据每个拼写错误的标记的单个建议组合一个建议。考虑到每个拼写错误的标记都可能有多个建议，这对我来说听起来有点低效。