emacs info mode: how do I make _word_ in body appear underlined?

Don_Nadie · 05-01-2015, 12:57 PM

Code:

% emacs --version
GNU Emacs 24.3.1

When reading topics in emacs info mode, I come across words that look like this: _word_. How do I make them look like this: word?

ntubski · 05-01-2015, 02:13 PM

This seems to work:

Code:

(defadvice Info-fontify-node (after fontify-underscored-words-as-underlined activate)
  (save-excursion
    (goto-char (point-min))
    (let ((inhibit-read-only t))
      (while (re-search-forward "\\_<_\\<[[:word:][:space:]]+\\>_\\_>" nil 'noerror)
        (let ((start (match-beginning 0))
              (end (match-end 0)))
          (put-text-property start (1+ start) 'invisible t)
          (put-text-property (1+ start) (1- end)
                             'font-lock-face 'underline)
          (put-text-property (1- end) end 'invisible t))))))

Don_Nadie · 05-04-2015, 04:26 AM

Sorry ntubski, your solution doesn't work for me.

I pasted your code into my .emacs file, saved that file, quit emacs, launched emacs, started emacs info, selected zsh from the info menu, and found

Code:

_simple command_

and

Code:

_precommand modifier_

and

Code:

_complex command_

in short order. They should be

Code:

simple command
precommand modifier
complex command

I also found

Code:

SHWORDSPLIT

which should actually be

Code:

SH_WORD_SPLIT

I think your code works for single words because I found

Code:

pipeline

which was

Code:

 _pipeline_

without your code.

Perhaps it's the space between words and underscores embedded in words that causes your elisp to fail.

Thank you anyway.

ntubski · 05-04-2015, 09:27 AM

Yeah, I didn't test very carefully. I've changed the regexp now, so it should work with those examples.