On Tue, 7 Aug 2018 10:42:01 +0200
"Joshua Moerman" <cont...@joshuamoerman.nl> wrote:
> Hi ConTeXt mailing list,
>
> I am using the extensible arrows and I am not really satisfied with
> the looks of it.
>
> The most important issue I have is that the vertical spacing is too
> much. You can see this in the attached picture: the left arrow is
> using \xrightarrow{\neq a} and the right arrow is using \stackrel{\neq
> a}{\longrightarrow}. I think the right one (with stackrel) looks more
> natural. Is there a way to setup the vertical spacing?
>
> Another thing I noticed is that the line is not very consistent. This
> might be a font issue (I am using Euler). Luckily, the inconsistent
> overlap is barely visible when printed.
>
> Thanks again!
>
> Groetjes,
> Joshua
>
Hello,
You can also use MetaPost to render math stackers, rather than relying on TeX
constructs and any particular font.
For example:
\useMPlibrary[mat]
\definemathstackers
[mp]
[alternative=mp]
\definemathextensible [mp] [leftarrow] ["2190]
\definemathextensible [mp] [rightarrow] ["2192]
\definemathextensible [mp] [leftrightarrow] ["2194]
\definemathextensible [mp] [longleftrightarrow] ["27F7]
\definemathextensible [mp] [rightoverleftarrow] ["21C4]
\definemathextensible [mp] [underbrace] ["FE3DF]
\setupbodyfont [dejavu-condensed,12pt]
\starttext
$\rightarrow{≠a}$
\stoptext
Furthermore, the MP arrow can be tuned
\startMPinitializations
ahlength := .5EmWidth ;
ahvariant := 1 ; % dimpled straight
\stopMPinitializations
as can line widths, etc.
Alan
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