I would like to define commands with semantics similar to e.g. + in math mode. For instance,


produces an equation with some spacing around +, whereas


produces an equation with less (or no) spacing around +.

The reason is that I would like to write something like

$\token{repeat} \token{skip} \token{until} b$

Where tokens are follwed by a space in the first case, but are not in the second. In a way, I'd like something similar to xspace, in math mode.

Any suggestions?

  • + gets it space from being a \mathbin but \mathbin{\hbox{#1}} doesn't do what you want.... Sep 7, 2013 at 11:21

1 Answer 1


Perhaps mathop spacing is what you are looking for.

enter image description here


.$\token{repeat} \token{skip} \token{until} b$.



\DeclareMathOperator in amsmath package for LaTeX.

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