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MathGroup Archive 2004

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Re: How input stacked characters with vertical bar

  • To: mathgroup at smc.vnet.net
  • Subject: [mg53105] Re: How input stacked characters with vertical bar
  • From: Paul Abbott <paul at physics.uwa.edu.au>
  • Date: Thu, 23 Dec 2004 07:59:39 -0500 (EST)
  • Organization: The University of Western Australia
  • References: <cqbh1k$4iv$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <cqbh1k$4iv$1 at smc.vnet.net>,
 "Steve Luttrell" <steve_usenet at _removemefirst_luttrell.org.uk> wrote:

> Here is a Text cell expression that does what you want.
> 
> Cell[TextData[Cell[BoxData[
>     FormBox[
>       SubsuperscriptBox[
>         RowBox[{
>           StyleBox["\[LeftBracketingBar]",
>             FontColor->GrayLevel[1]],
>           FractionBox["f",
>             FractionBox["g", "h"]], "\[RightBracketingBar]"}], "a",
>         "b"], TraditionalForm]]]], "Text"]
> 
> The trick is to use the left and right bracketing bars (these are on the 
> BasicTypsetting palette just below the corresponding left and right angle 
> brackets). You then need to colour the left hand bracketing bar white (so it 
> disappears). 

Instead of 

   StyleBox["\[LeftBracketingBar]", FontColor->GrayLevel[1]]

you can use \[AutoLeftMatch]. For example,

  Cell[TextData[Cell[BoxData[
    FormBox[
      SubsuperscriptBox[
        RowBox[{
          "\[AutoLeftMatch]",
          FractionBox["f",
            FractionBox["g", "h"]], "\[RightBracketingBar]"}], "a",
        "b"], TraditionalForm]]]], "Text"]

> It is not OK to simply delete it, because the right hand 
> bracketing bar then appears purple (because it is lonely without its 
> partner!), and this colouration survives all the way to the final printed 
> form.

You can work around this by modifying the "UnmatchedBracket" style in 
the Automatic Styles for the Notebook. However, using auto-matching is 
better.

Cheers,
Paul

-- 
Paul Abbott                                   Phone: +61 8 6488 2734
School of Physics, M013                         Fax: +61 8 6488 1014
The University of Western Australia      (CRICOS Provider No 00126G)         
35 Stirling Highway
Crawley WA 6009                      mailto:paul at physics.uwa.edu.au 
AUSTRALIA                            http://physics.uwa.edu.au/~paul


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