I am trying to reduce the word count in a document I am writing. The
existing word count functionality for emacs is surprisingly lacking.
I wanted a word count function for org mode which excluded tables and
comments, and ended up writing one myself.
If this function is called with a region highlighted, it counts the words in
the region. Otherwise it counts words in the whole buffer.
It ignores commented lines and tables. LaTeX-style macros such as
\foo{bar,baz} are counted as 1 word, as a compromise (more often than not
they should count as 0, but they do sometimes expand to 1 or more words
in the final document).
Limitations:
- Does not ignore BEGIN_SRC/END_SRC or inline src_* blocks (babel).
Should be easy enough to add however.
- There is probably a better way of identifying latex macros
than my 'latex-macro-regexp' below.
- Ignores all org links. I couldn't figure out how to extract "description"
text from links, but I didn't look very hard.
Improvements welcome.
Paul
------------------------------------------------------------------------
(defun in-comment-p ()
"Return non-nil if point is in a comment."
(if (or (null comment-start-skip)
(eq (preceding-char) ?\r))
nil
(save-excursion
(let ((pos (point)))
(re-search-backward "^\\|\r" nil t)
(or (looking-at comment-start-skip)
(re-search-forward comment-start-skip pos t))))))
(defun in-org-table-p ()
"Return non-nil if point is in an org-mode table."
(if (or (not (boundp 'org-table-any-line-regexp))
(null org-table-any-line-regexp)
(eq (preceding-char) ?\r))
nil
(save-excursion
(let ((pos (point)))
(re-search-backward "^\\|\r" nil t)
(looking-at org-table-any-line-regexp)))))
(defvar latex-macro-regexp "\\\\[A-Za-z]+\\(\\[[^]]*\\]\\|\\){\\([^}]*\\)}")
(defun org-word-count (beg end)
(interactive "r")
(unless mark-active
(setf beg (point-min)
end (point-max)))
(let ((wc 0))
(save-excursion
(goto-char beg)
(while (< (point) end)
(re-search-forward "\\w+\\W*")
(cond
((or (in-comment-p) (in-org-table-p))
nil)
((looking-at org-any-link-re)
(goto-char (match-end 0)))
((save-excursion
(backward-char)
(looking-at latex-macro-regexp))
(goto-char (match-end 0))
(setf wc (+ 2 wc)))
(t
(incf wc)))))
(message (format "%d words in %s." wc
(if mark-active "region" "buffer")))))
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