My web server serves content that is in 95% of the time just simple ascii. However in some rare cases, the content contains some German non-ascii characters.
Now I could set the content-type
response header by detecting if the content contains any non-ascii characters, or I could just always set the response header:
Content-Type: text/plain; charset=UTF-8
Is there any disadvantage in doing the latter?
Nope, all it's there for is to tell the browser which character set to decode your response with.