Well, found the thread back, it can be found
here. This is what Dan had to say:
Originally posted by Dan Magaha FIRAXIS (03-10-2001 18:44)
I'm not sure where this rumor came from, but Civ III will not be shipping with any form of scripting language or macro support.
Dan
Firaxis Games, Inc.
As far as a future scripting language goes, I never played StarCraft either. It does look like Firaxis/Infogrames is trying to milk this baby to its fullest, ala Civ2

The editor/scripting language issue came up again later on, here's a (selection of) that part of the chat:
"[Mike_Breitkreutz_FIRAXIS] I think I would've liked to have had more stuff in the editor but I certainly agreed that we shouldn't have held up the game's release solely for the editor....
[LoQtus] what do you most miss from the editor then?
[Javier_Sobrado_FIRAXIS] Certain featureswere cut from the game and editor, and it was a shame to see them go, but I agree it was better to develop a solid game, and add the cool features later
[LoQtus] scripting language? :cute:
[Mike_Breitkreutz_FIRAXIS] Actually, the lack of a scripting language doesn't bother me -- if implemented properly an editor can be more powerful AND user-friendly than a scripting language.... in my experience anyway. I've written scripting languages before and I've noticed users havea much easier time making mistakes.
[LoQtus] true, a scripting language is difficult to use, I'll be the first to admit that, but what other method can approach it in terms of 'modding power'?
[Mike_Breitkreutz_FIRAXIS] Well, I've worked on editors for other games where we had what we called "Action Lists" which were basically "Visual Scripting Languages" and made it impossible for users to make syntax errors. They require a little more work in some areas but less in others and I think the end result is superior....
[Javier_Sobrado_FIRAXIS] The AI is very adaptive, and we have ideas to add a few features that should give you a considerable amount of "modding power"
[LoQtus] hmm, i'm not familiar with those, certainly worth giving a try. you mentioned starcraft earlier, do you know any other games with this sort of action lists?
[Mike_Breitkreutz_FIRAXIS] I know of 2 or 3 but they were used only internally`

The StarCraft editor is a very similar concept though.
[LoQtus] javier: care to elaborate? this sounds very interesting, esp. for a hardcore modder like me
[LoQtus] hmm, must get that game then...
[Javier_Sobrado_FIRAXIS] Alas I don't know all the details, and I don't want to promise things that get cut later ;-)
[Mike_Breitkreutz_FIRAXIS] I modeled a lot of the editor after StarCraft and Age of Kings since I was familiar with both of them....
[LoQtus] btw, mike. is there any good literature on this subject? i never heard of it before...
[LoQtus] hmmm, I was afraid of that, javier

would you have told me if there weren't any people like yin?

[Javier_Sobrado_FIRAXIS] who? ;-)
[LoQtus] lol
[Mike_Breitkreutz_FIRAXIS] Actually, I haven't seen any literature on it either. For that matter, I haven't seen any literature on editors in general (not that I looked very hard)....
[LoQtus] hmm, well, I'll guess I'll have to look for it myself then... thanks anyway"
Look out for the full chat transcript on Apolyton later today, it contains tons of interesting info, on all aspects of Civ3.