sed errors through portupgrade

[Parv]

(Updated the otherwise highly misleading subject of only "sed
errors".)

in message <f3vnrf$gi4$1 at sea.gmane.org>,
wrote Ivan Voras thusly...
>
> I've recently started getting these errors while running portupgrade:
> 
> sed: 1: "s|^\(@comment[": unbalanced brackets ([])
> sed: 1: "s|^\(@comment[": unbalanced brackets ([])
> sed: 1: "s|^\(@comment[": unbalanced brackets ([])
> sed: 1: "s|^\(@comment[": unbalanced brackets ([])
> 
> The above lines are displayed twice: once when portupgrade starts and
> once when it finishes.

What version of portupgrade is producing the error message?  What
command did/do you issue?


  - Parv

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