That's how it works (worked) with It's All Text! extension for Firefox: you set an editor (`gvim -f' in my case) and on a keybinding it's started with a file as

That's how it works (worked) with It's All Text! extension for Firefox: you set an editor (`gvim -f' in my case) and on a keybinding it's started with a file as its argument. Text area gets updated on write to the file. Normally you don't need to see or worry about the intermediate files, but in case anything goes awry, you still have the option.