UTF-8 and ISO-8859-1 in web pages

[Heikki Johannes Junes]

Seems like two encodings, UTF-8 and ISO-8859-1, become mixed in the web pages.
The reason for this is that not all pages specify the encoding which they use. 

The main page, http://www.lilypond.org/, specifies and uses UTF-8, which is ok.
But if you then click the link of the Development documentation and enter to the
page, the encoding is not specified but, luckily, the page is correctly shown.
However, if you then click "Thank yous", you will see that, again, the encoding
will remain as UTF-8 (since it is not specified) but the page is unfortunately
coded with ISO-8859-1. As a result, you will have question marks ('?') instead
of o-umlaut ('ö').

The correct solution is to specify the encoding in each web page. But, the
question for the future is that should one solely stick to UTF-8 encoding in the
web pages? One engineering challenge here is that some of the pages contain
inclusions from the source files which may not be in UTF-8 format.

Terveisin
Heikki Junes