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Old 05-01-2015, 01:57 PM   #1
Don_Nadie
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emacs info mode: how do I make _word_ in body appear underlined?


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?
 
Old 05-01-2015, 03:13 PM   #2
ntubski
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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))))))

Last edited by ntubski; 05-04-2015 at 10:25 AM. Reason: fix regex
 
Old 05-04-2015, 05:26 AM   #3
Don_Nadie
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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.

Last edited by Don_Nadie; 05-04-2015 at 05:32 AM. Reason: one example was incorrect
 
Old 05-04-2015, 10:27 AM   #4
ntubski
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Yeah, I didn't test very carefully. I've changed the regexp now, so it should work with those examples.
 
  


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