: According to that bug list, there are other characters that break the : sorting function. Is there a list of safe characters I can use as a : delimiter?
the safest field names to use (and most efficient to parse when sorting) are things that follow the the "id" semenatics in java (not including the "$" character at the begining) ... http://download.oracle.com/javase/1.4.2/docs/api/java/lang/Character.html#isJavaIdentifierStart%28char%29 http://download.oracle.com/javase/1.4.2/docs/api/java/lang/Character.html#isJavaIdentifierPart%28char%29 So sorts like "foo_bar_baz asc" will definitely work, and are heavily tested I've just posted a patch to SOLR-2606 that should fix the "foo:bar asc" and "foo-bar asc" situations, but because of the function query sort parsing that happens first, they will always be slightly slower to parse. -Hoss
