Re: Define new symbol by stitching two symbols together

[Aditya Mahajan <adityam@umich.edu>]

On Sun, 23 May 2021, Hans Hagen wrote:

> On 5/22/2021 8:23 PM, Nicola wrote:
> > I would like to define new symbols by stitching together existing
> > glyphs. This is what I have come up so far:
> > 
> >      \define[1]\Transition{-\!\![#1]\!\!\rightarrow}
> >      \starttext
> >      \m{L\Transition{A}R}
> >      \stoptext
> > 
> > This should render as -[ ]->, ideally with no space between the dash or
> > the arrow and the brackets, i.e., -[ should appear like a single glyph;
> > ditto for ]-->. With the definition above, however, the space is
> > variable, and in some circumstances the gliphs overlap.
> > 
> > How can I improve the above definition?
> don't use these funny \! skips ... use some font related metric:
> 
>      \define[1]\Transition{-\kern-1ex[#1]\kern-1.1ex\rightarrow}

This is how we used to define arrows in the old days ...

\define[1]\Transition{\relbar\joinrel\mathrel{[}#1\mathrel{]}\joinrel\rightarrow}
\define[1]\BigTransition{\relbar\joinrel\relbar\joinrel\mathrel{[}#1\mathrel{]}\joinrel\relbar\joinrel\rightarrow}

\starttext
\m{L\Transition{A}R}

\m{L\BigTransition{A}R}
\stoptext

Aditya



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