I has some sybmol, e.g. O and I want to convert it to hex value. The result must be 4f
How I can do this in Emacs 26.1 ?
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You can simply run M-x eval-expression and type ?O. You will get the following output in the minibuffer:
79 (#o117, #x4f, ?O)
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C-x =(what-cursor-position) works as well, it prints something like "Char: O (79, #o117, #x4f) point=146 of 146 (99%) column=0". – xuchunyang Jun 20 '19 at 23:31 -
Nice, I didn't know about
?0. A side note, by defaulteval-expressionis bounded toM-:which make it much faster... – Pouya Jun 21 '19 at 12:47
Maybe no so elegant but should do the trick. Note I have assigned it to "C-." which might be used by other functions in your setup. Reassign as you wish:
(defun hexify()
(interactive)
(setq hx (format "%x" (char-before)))
(delete-backward-char 1)
(insert hx))
(global-set-key (kbd "C-.") 'hexify)
Calling the function, replaces the character before the cursor with its hex. If you just want the value Arkadiusz's answer will do.
