Re: [O] custom emacs org-emphasis-alist breaks EXPORT, help ;-) ?

[Jambunathan K]

Working with font-lock keywords is quite messy.  The good news is that
you don't have to do it.  

If you want highlighting in the buffer or a file (and but not in the
exported buffer), just go with hi-lock-mode.

The relevant manual page is at

    C-h K C-x w b

In your Org file do this,

    C-x C-f somefile.org
    M-x hi-lock-mode RET
    C-x w p server 
    M->
    C-x w b
    C-x C-s
    C-x k
    C-x C-f somefile.org

When you reopen the file hi-lock may ask some confusing questions.
Answer those.

You will see that now whenever you open the file, the word `server' is
always highlighted.

If you are adventurous, you can do

   C-h v font-lock-keywords 

within the org file and examine how it looks like for specific keywords
you have added.



Xebar Saram <address@hidden> writes:

> Thanks Eric , really appreciate the continuous help!
>
> i do plan to get into rexeg on the future (i promise :)) but real life
> now just allow me to allocate time (i started an assistant professor
> position and time is at a huge premium..).
>
> i tried using this as i tried to understand from your email, but i
> guess im again doing something wrong. shouldn't the below example
> color "salt", it dosent see to work.
>
> ;test
> (font-lock-add-keywords
> 'org-mode
> '(("\b[Ss]alt\\b)" (0 '(:weight ultra-bold :foregroun "#FF9800") t))))
>
> thank you for all your help
>
> On Sat, Nov 2, 2013 at 12:15 PM, Eric Abrahamsen
> <address@hidden> wrote:
>
>     Xebar Saram <address@hidden> writes:
>     
>     > Hi again all
>     >
>     > i have been using the before discussed font lock with great
>     success
>     > over the past few weeks, thx alot for that tip!
>     >
>     > one short question i have from using it thourhgly is weather its
>     > possible to color specific words , IE not just text bound
>     between
>     > symbols ( ie > !text! ) but rather lets say i always want to
>     make the
>     > word server appear with blue FG. is this possible? currently i
>     tried 
>     >
>     > (font-lock-add-keywords
>     > 'org-mode
>     > '(("\\(server[^server\n]+server\\)" (0 '(:foreground "#000000"
>     > :underline t :background "#FF9AEA" :weight ultra-bold) t))))
>     
>     
>     At some point you're definitely going to want to read up on
>     regular
>     expressions!
>     
>     But in the meantime yes, it's entirely (mostly) possible. A
>     regular
>     expression is just a way of finding desired pieces of text in a
>     larger
>     run of text. Think of the regexp as an instruction that starts:
>     "Find
>     all pieces of text that are..."
>     
>     All the special regexp characters are just a way of making the
>     instruction general (_any_ number, four of _any_ character, _
>     anything_
>     that's not a "p").
>     
>     In the most basic case, however, a regexp is simply the text you
>     want to
>     find: "Find all pieces of text that are 'server'". In this case,
>     that's
>     your regexp: "server".
>     
>     The reason regexps are difficult, of course, is that they can't
>     read
>     your mind, and will find things you didn't want, and not find
>     things you
>     did want. So much of messing with regexps is telling them: _yes_
>     this
>     too, _no_ not that. In your case, you'd probably want to put word
>     boundaries around the regexp ("\b" on either side), and find both
>     capitalized and lowercase instances of the word. So your
>     instruction
>     might be:
>     
>     "Find all pieces of text that are 'server' or 'Server', but only
>     as a
>     complete word."
>     
>     Which would look like
>     
>     "\\b[Ss]erver\\b"
>     
>     Give that a shot. You're jumping into the middle of something
>     fairly
>     complicated, so be patient and go slow!
>     
>     
>     
>     E
>     
>     > instead of the original
>     >
>     > (font-lock-add-keywords
>     > 'org-mode
>     > '(("\\(₆[^₆\n]+₆\\)" (0 '(:foreground "#000000" :underline t
>     > :background "#FF9AEA" :weight ultra-bold) t))))
>     >
>     >
>     > again i apologize for my regrex ignorance :)
>     >
>     > best
>     >
>     > Z
>     >
>     >
>     >
>     >
>     > On Sun, Oct 6, 2013 at 8:04 AM, Eric Abrahamsen <
>     > address@hidden> wrote:
>     >
>     > Xebar Saram <address@hidden> writes:
>     >
>     > > thx again Eric
>     > >
>     > > i still have an issue with this when one of the symbols used
>     to
>     > start
>     > > /end the highlight is used in a sentence, for example using
>     > your
>     > > code:
>     > >
>     > > (font-lock-add-keywords
>     > > 'org-mode
>     > > '(("-1-\\([^-1-]+\\)-1-" (0 '(:weight ultra-bold :background "
>     > #
>     > > DDFFDD" :foreground "#000000") t))))
>     > >
>     > > if i write this:
>     > >
>     > > -1- this is a test of 1x1 to show higlight -1-
>     > >
>     > > it will kill the highlight, if i use the same text omitting
>     the
>     > '1'
>     > > it works well, anyway around this issue? i thought it would
>     > have
>     > > matcehd -1- but it seems it matches also just 1 by itself
>     > >
>     > > best wishes and thx again
>     >
>     > Yup, the things inside the [^] construct, to _not_ be matched,
>     > are
>     > treated as a list of single characters. So you're saying
>     > "anything
>     > that's not a '1' or a '-'," but then you've got a '1' in the
>     > middle of
>     > the line. If you want the highlighting to include any character,
>     > but not
>     > span newlines, you could just use [^\n] instead.
>     >
>     > At this point you'll probably want to read the regular
>     expression
>     > part
>     > of the manual:
>     >
>     > (elisp) Regular Expressions
>     >
>     > I think you mentioned you don't have a lot of programming
>     > experience.
>     > That's a bit unfortunate, since regexps aren't a great place to
>     > start!
>     > I'd recommend getting something that's "close enough", and not
>     > going
>     > down the rabbit hole of perfect. Then start at the top of the
>     > introduction to elisp...
>     >
>     > Good luck,
>     > Eric
>     >
>     >
>     
>     
>