in reply to Re^2: character encoding ambiguities when performing regexps with html entities
in thread character encoding ambiguities when performing regexps with html entities

is there a regular expression I can write that detects non-ascii characters?

Here are a couple easy ones: 

/[^\x00-\x7f]/
/[^[:ascii:]]/

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They both work whether or not the string happens to have its "utf8 flag" turned on.
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