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Re: [tip/offtopic] A function to describe the characters of a word at po
From: |
Marcin Borkowski |
Subject: |
Re: [tip/offtopic] A function to describe the characters of a word at point |
Date: |
Thu, 14 Jul 2022 17:42:08 +0200 |
User-agent: |
mu4e 1.1.0; emacs 29.0.50 |
On 2022-07-13, at 12:49, Juan Manuel Macías <maciaschain@posteo.net> wrote:
> Sorry for the slight offtopic.
Not off-topic at all, as far as I'm concerned! (Though sending this to
help-gnu-emacs might be an even better idea.) I use `C-u C-x =' pretty
often, so I fully understand why someone might want to code something
like this. Very nice, thanks for sharing!
You might want to extend it and create a minor mode which would display
data about the current character in the echo area, Eldoc-style, or in
a tooltip when you hover the mouse pointer over a character. Depending
on what exactly you need, these ideas might be more or less useful, of
course.
Also, since the answer to quite a few org-related issues seems to be
"just insert a zero-width space", making those stand out (like
non-breaking spaces already are) could also be useful. FWIW, I have
this function in my init.el:
(defun insert-zero-width-space ()
"Insert Unicode character \"zero-width space\"."
(interactive)
(insert ""))
(of course, the 0-width space is invisible between the quotes).
Best,
mbork
> Since Unicode and character issues come up here from time to time, I'm
> sharing this 'homemade' function that I wrote a long time ago for my
> work, in case someone finds it useful. It Shows a brief descriptive list
> of all characters in a word at point. Each character includes the
> Unicode name, code, and canonical decomposition. Example:
>
> ἄρχοντα >>
>
> ἄ (#1f04) ... GREEK SMALL LETTER ALPHA WITH PSILI AND OXIA ... descomp: #1f00
> #301
> ρ (#3c1) ... GREEK SMALL LETTER RHO ... descomp: #3c1
> χ (#3c7) ... GREEK SMALL LETTER CHI ... descomp: #3c7
> ο (#3bf) ... GREEK SMALL LETTER OMICRON ... descomp: #3bf
> ν (#3bd) ... GREEK SMALL LETTER NU ... descomp: #3bd
> τ (#3c4) ... GREEK SMALL LETTER TAU ... descomp: #3c4
> α (#3b1) ... GREEK SMALL LETTER ALPHA ... descomp: #3b1
>
>
> #+begin_src emacs-lisp
> (defun describe-chars-word-at-point ()
> (interactive)
> (setq chars-in-word nil)
> (if
> (not (current-word t t))
> (error "Not in a word at point...")
> (let
> ((word (current-word t t)))
> (save-excursion
> (with-temp-buffer
> (insert word)
> (goto-char (point-min))
> (while (re-search-forward "\\(.\\)" nil t)
> (let* ((char-name (save-excursion
> (backward-char)
> (get-char-code-property (char-after
> (point)) 'name)))
> (char-desc (save-excursion
> (backward-char)
> (get-char-code-property (char-after
> (point)) 'decomposition)))
> (char-format (concat (match-string 1) "\s" "("
> (format "#%x" (string-to-char
> (match-string 1)))
> ")\s...\s" char-name
> "\s...\sdecomp:\s"
> (mapconcat (lambda (cod)
> (format "#%x" cod))
> char-desc " "))))
> (push char-format chars-in-word)))
> (when (get-buffer "*chars in word*")
> (kill-buffer "*chars in word*"))
> (get-buffer-create "*chars in word*")
> (set-buffer "*chars in word*")
> (insert (mapconcat 'identity
> (reverse chars-in-word) "\n"))
> (view-mode)
> (temp-buffer-window-show "*chars in word*"
> '((display-buffer-below-selected
> display-buffer-at-bottom)
> (inhibit-same-window . t)
> (window-height .
> fit-window-to-buffer))))
> (pop-to-buffer "*chars in word*")))))
> #+end_src
--
Marcin Borkowski
http://mbork.pl