I found it:

It seems to be  \overline  now.

\starttext

$\overline{(abcd)}$
  
\stoptext

I added a little info to the wiki.

Cheers.


On 9/26/2017 12:47 AM, Sebastian L. wrote:
It works for single characters, not over braces and brackets though. But that's what it was important for for me.

\starttext

  \overbar{1}
    $\overbar{1}$
    $\bar{a}$
    $\bar{(abcd)}$
    $\bar{\left(abcd\right)}$
  \stoptext

Thanks though Henri.


On 9/26/2017 12:33 AM, Henri wrote:
Not a solution, but in math mode you should use $\bar{1}$ which is the proper math accent.

On Mon, 2017-09-25 at 23:51 +0200, Sebastian L. wrote:
Hi fellas,

after some recent beta change some of my documents differ in output
compared to past builds, when it comes to \overbar command in math mode.
MWE:

\starttext

    \overbar{1}
        $\overbar{1}$
    \stoptext

In math mode the example looks broken... Did I miss a change; is there a
new method for overbars in math mode?

Greetings, Sebastian

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