Use the normal arrow ends for surjective arrows?

[user202729]

For some reasons, the current surjective arrows in commutative diagrams feel kind of weird.

For comparison, the \surjto macro uses the normal arrow.

What do you think?

(to get the normal arrow, I think we can do something like

\tikzset{
    surjective/.style={
        >={Computer Modern Rightarrow}, commutative diagrams/two heads
    }
}

then use surjective instead of two heads in the actual diagrams.)

Or maybe it's also possible to shorten the lengths like (look at the C ↠ D arrow):

(produced by

\tikzset{
    surjective arrow /.tip = {tikzcd to[sep=-1.5pt]tikzcd to},
    surjective/.style={
        -surjective arrow
    }
}

)

[vEnhance]

iirc i had an issue with the "default" tikz-cd arrows where the usual arrows were hard to see in some PDF viewers, so i switched to the filled arrow tips with black triangles.

the latter approach seems reasonable though