mod-headers 'early' keyword working in 2.2.4?

[Gordon Mohr <gojomo@xxxxxxxxxxx>]

I'm trying to use the 'early' keyword on a Header directive in Apache 
2.2.4 on Ubuntu, and having no success.

My first attempt was:

Header unset MyHeader early

And I got an error: "header unset takes two arguments"

OK, I thought, maybe 'unset' is special (even though I'd really like to 
use it 'early'.) So I tried:

Header set MyHeader myvalue early

And I got an error: "error: envclause should be in the form env=envar"

I don't see any indication in the docs 'early' is a recent (post-2.2.4) 
addition, though that second error suggests

Is anyone using mod_header Header 'early' successfully?

Any ideas what I'm doing wrong, if anything?

Thanks for any help,

- Gordon @ IA

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