document.documentElement and document.head are unavailable @ document-start

[nstepien]

See title.

This works:

• on Firefox with Greasemonkey,
• on Opera,
• on Chrome (except document.head),

but not with scriptish.

[supahgreg]

In Scriptish, @run-at document-start scripts get injected at content-document-global-created, which is before the root element gets inserted. Greasemonkey (and maybe others) use document-element-inserted.

https://developer.mozilla.org/docs/Observer_Notifications

[supahgreg]

Whether Scriptish's behavior should be modified is up for debate. Offhand I can't come up with an example where you'd need to get in before document-element-inserted.

[nstepien]

I don't think there's much debate to be had when the userscript implementations that matters offer the elements we need at document-start.

[dindog]

Does the current implement affect addStlye()? I thought the GM_addStyle is actually creates a style element than appends it to the page...

[CoolCmd]

Scriptsh's implementation of document-start useless and must be changed.
At least I shall get access to documentElement or GM_addStyle for preventing flicker.

[erikvold]

Alright let's delay injection to conform with the other engines, we can add a new @run-at if desired.