Re: Unnecessary parentheses around TagBox for MakeBoxes?

*To*: mathgroup at smc.vnet.net*Subject*: [mg132236] Re: Unnecessary parentheses around TagBox for MakeBoxes?*From*: John Fultz <jfultz at wolfram.com>*Date*: Tue, 21 Jan 2014 03:47:35 -0500 (EST)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net*References*: <20140118100106.64B6C6A15@smc.vnet.net>

You can use the SyntaxForm option of TagBox to resolve this. A common pattern that you'll find with many template styles in Core.nb for situations very much like this (i.e., where the TagBox should simply act as a standalone thing and not as a thing with a given precedence) is using a value of SyntaxForm->=94symbol=94. MakeBoxes[test, form_] := TagBox[RowBox[{"test", "END"}], "myBox", SyntaxForm -> "symbol=94] While the meme of using SyntaxForm->=94symbol=94 isn't documented, SyntaxForm is otherwise documented and I encourage you to look it up. John Fultz jfultz at wolfram.com User Interface Group Wolfram Research, Inc. On Jan 18, 2014, at 4:01 AM, Yi Wang <tririverwangyi at gmail.com> wrote: > Hello, > > I was trying to generate pretty output for some expressions. To assist interpretation, a TagBox is used. > > A problem is that, Mathematica always insert unnecessary parentheses outside TagBox. For example, > > MakeBoxes[test, form_] := TagBox[RowBox[{"test", "END"}], "myBox"] > > In[] := 2 test > Out[] = 2 (test END) > > Here the TagBox already has clear boundary thus the parentheses shouldn't be necessary. Would it be possible to remove it? > > Note that the "END" in this simple example will be replaced by a complicated structure (GridBox) in actually usage. Thus I cannot simply write "testEND" together as a single string. Also, the parentheses appears in TraditioinalForm, which further appear in all forms as TeXForm, etc. >

**References**:**Unnecessary parentheses around TagBox for MakeBoxes?***From:*Yi Wang <tririverwangyi@gmail.com>