I have some UTF-8 HTML templates in my Eclipse project and Eclipse keeps treating them as if they had a different encoding. It says the encoding is \"determined from content
I've only seen "determined from content" for XML files. In that case it's the only correct setting, because XML files have their encoding defined in their header, so forcing anything else would be a grave mistake.
If you still want to do it, you could try to view the file .settings/org.eclipse.core.resources.prefs
in your project (that file may or may not exist dependin on wether you've manually set any encoding in the project or not).
I've just solved this problem (eclipse 3.5.2)
Two steps required:
This was caused by a development version of Eclipse. In the latest official release (3.5) it is fixed.