Headers already sent? But how?

[eluser]WanWizard[/eluser]
In my editor (Geany on Linux) the option "Write Unicode BOM" is completely seperate from the encoding I select.

Just copied the Farsi text from this site, saved it as a UTF-8 file (no BOM), viewed it in the browser (no problem, and shows encoding UTF-8), and opened it again (still ok).

Maybe it's time for a better editor?