Index: /trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj	(revision 9856)
+++ /trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj	(revision 9857)
@@ -162,5 +162,5 @@
 |   < STRING: "\"" ( [" ","!","#"-"[","]"-"~","\u0080"-"\uFFFF"] | "\\\"" | "\\\\" )*  "\"" >
 |   < #PREDEFINED: "\\" ["d","D","s","S","w","W","b","B","A","G","Z","z"] >
-|   < #REGEX_CHAR_WITHOUT_STAR: [" "-")","+"-".","0"-"[","]"-"~","\u0080"-"\uFFFF"] | "\\/" | "\\\\" | "\\[" | "\\]" | "\\+" | "\\." | "\\'" | "\\\"" |  "\\(" | "\\)" | "\\{" | "\\}" | "\\?" | "\\*" | "\\^" | "\\$" | "\\|" |<PREDEFINED> >
+|   < #REGEX_CHAR_WITHOUT_STAR: [" "-")","+"-".","0"-"[","]"-"~","\u0080"-"\uFFFF"] | "\\/" | "\\\\" | "\\[" | "\\]" | "\\+" | "\\." | "\\'" | "\\\"" |  "\\(" | "\\)" | "\\{" | "\\}" | "\\?" | "\\*" | "\\^" | "\\$" | "\\|" | "\\p" |<PREDEFINED> >
 |   < REGEX: "/" <REGEX_CHAR_WITHOUT_STAR> ( <REGEX_CHAR_WITHOUT_STAR> | "*" )*  "/" >
 |   < LBRACE: "{" >
Index: /trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.groovy
===================================================================
--- /trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.groovy	(revision 9856)
+++ /trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParserTest.groovy	(revision 9857)
@@ -433,3 +433,15 @@
         assert mc.getCascade(Environment.DEFAULT_LAYER).get("max_split", -777f, Float.class) == 56
     }
+
+    @Test
+    public void testTicket12549() throws Exception {
+        def condition = getParser("[name =~ /^(?i)(?u)fóo\$/]").condition(Condition.Context.PRIMITIVE)
+        assert condition.applies(new Environment(OsmUtils.createPrimitive("way name=fóo")))
+        assert condition.applies(new Environment(OsmUtils.createPrimitive("way name=fÓo")))
+        condition = getParser("[name =~ /^(\\p{Lower})+\$/]").condition(Condition.Context.PRIMITIVE)
+        assert !condition.applies(new Environment(OsmUtils.createPrimitive("way name=fóo")))
+        condition = getParser("[name =~ /^(?U)(\\p{Lower})+\$/]").condition(Condition.Context.PRIMITIVE)
+        assert condition.applies(new Environment(OsmUtils.createPrimitive("way name=fóo")))
+        assert !condition.applies(new Environment(OsmUtils.createPrimitive("way name=fÓo")))
+    }
 }