From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernt Hansen Subject: Re: Re: \nbsp usage Date: Wed, 14 Jul 2010 07:54:42 -0400 Message-ID: <87zkxuuvlp.fsf@gollum.intra.norang.ca> References: <874og2x5jh.fsf@gollum.intra.norang.ca> <8625.1279081398@gamaville.dokosmarshall.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from [140.186.70.92] (port=38213 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OZ0YF-0005CP-JJ for emacs-orgmode@gnu.org; Wed, 14 Jul 2010 07:55:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OZ0YE-0007dG-A6 for emacs-orgmode@gnu.org; Wed, 14 Jul 2010 07:54:59 -0400 Received: from mho-01-ewr.mailhop.org ([204.13.248.71]:49173) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OZ0YE-0007d4-7d for emacs-orgmode@gnu.org; Wed, 14 Jul 2010 07:54:58 -0400 In-Reply-To: <8625.1279081398@gamaville.dokosmarshall.org> (Nick Dokos's message of "Wed\, 14 Jul 2010 00\:23\:18 -0400") List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: nicholas.dokos@hp.com Cc: emacs-orgmode@gnu.org Nick Dokos writes: > Bernt Hansen wrote: > >> Erik Butz writes: >> >> > I want to use the \nbsp macro to generate a '~' symbol for Latex, but >> > I don't seem to get it to work correctly in my case. >> > I want to write 200~m=C2=B2 >> > >> > If I do: 200\nbspm^2 >> > it gets exported as: 200\nbspm$^2$, so the symbol is not recognized. >> > >> > If I do: 200\nbsp m^2 >> > it gets exported as 198~ m$^2$, so in addition to the nbsp there is >> > another space at which a linebreak can occur >> > >> > trying: 200\nbsp{}m^2 in analogy to other commands >> > I get: 200~\{\}m$^2$, so the parentheses are not recognized as >> > belonging to the command. >> > >> This seems to work for me: >> >> ,----[ sample org file ] >> | * nbsp >> | If I do: one two three four five six seven eight nine ten eleven twelve 2= >> 00\nbsp m^2 it gets exported >> `---- >> >> this exports as=20 >> >> ,----[ latex output ] >> | ... >> | \label{sec-1} >> |=20 >> | If I do: one two three four five six seven eight nine ten eleven twelve 2= >> 00~ m\^{}2 it gets exported >> | \end{document} >> `---- >> >> and when I look at that as a PDF it doesn't break between the 200 and >> m^2. I tried adding x and xx before the 200 and it pushes the entire >> thing to the next line. I can't make it break on a line so 200 is at >> the end of one line and m^2 is on the following line. > > I suspect that you cannot decide the question with a simple experiment > like this, but I have no counterexample to offer. > > However, Knuth warns explicitly (p.91 of my version of the TeXbook, > paperback 19th printing, Oct. 1990) that "...you shouldn't leave any blanks > next to the ~, since they will count as additional spaces." > > It may well be that TeX's line-breaking algorithm does the right thing in > the example, but when push comes to shove in a *really* complicated situation, > it might be forced to choose the space after the tilde to break the line at. Ooops :) Thanks for the pointer to the docs! -Bernt