! I'm not sure if I should mail this here or open a new bugzilla report. Please advice.
The Content Negotiation doc is using a misleading example in this section: http://httpd.apache.org/docs/2.2/content-negotiation.html#better [[ Example SetEnvIf Cookie "language=(.+)" prefer-language=$1 Header append Vary cookie ]] That regular expression won't work if the cookie has other attributes in addition to the language one. One of our users got caught by it. A quick search on the web shows that many people have had this problem too. Here's a correct regular expression that will return the language attribute value, regardless of the contents of the cookie: [[ SetEnvIf Cookie "language=([a-z|A-Z][a-z|A-Z|-]+)" prefer-language=$1 ]] The expression looks bigger because it takes into account not only strings like "en", but also "zh-hans". I added upper and lower case as cookies are case insensitive and I'm not sure if Apache converts cookies to lower-case at some point. If it's always lower case, we can simplify the regular expression to: [[ SetEnvIf Cookie "language=([a-z][a-z|-]+)" prefer-language=$1 ]] Could you update the example in the doc accordingly? Thanks! -jose
