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+%option case-insensitive
+%option noyywrap
+%option 8bit
+%option stack
+%s mediaquery
+%s forkeyword
+
+h [0-9a-fA-F]
+nonascii [\200-\377]
+unicode \\{h}{1,6}[ \t\r\n\f]?
+escape {unicode}|\\[ -~\200-\377]
+nmstart [_a-zA-Z]|{nonascii}|{escape}
+nmchar [_a-zA-Z0-9-]|{nonascii}|{escape}
+string1 \"([\t !#$%&(-~]|\\{nl}|\'|{nonascii}|{escape})*\"
+string2 \'([\t !#$%&(-~]|\\{nl}|\"|{nonascii}|{escape})*\'
+
+ident -?{nmstart}{nmchar}*
+name {nmchar}+
+num [0-9]+|[0-9]*"."[0-9]+
+intnum [0-9]+
+string {string1}|{string2}
+url ([!#$%&*-~]|{nonascii}|{escape})*
+w [ \t\r\n\f]*
+nl \n|\r\n|\r|\f
+range \?{1,6}|{h}(\?{0,5}|{h}(\?{0,4}|{h}(\?{0,3}|{h}(\?{0,2}|{h}(\??|{h})))))
+nth [\+-]?{intnum}*n([\t\r\n ]*[\+-][\t\r\n ]*{intnum})?
+
+%%
+
+\/\*[^*]*\*+([^/*][^*]*\*+)*\/ {countLines(); /* ignore comments */ }
+
+[ \t\r\n\f]+ {countLines(); yyTok = WHITESPACE; return yyTok;}
+
+"<!--" {yyTok = SGML_CD; return yyTok;}
+"-->" {yyTok = SGML_CD; return yyTok;}
+"~=" {yyTok = INCLUDES; return yyTok;}
+"|=" {yyTok = DASHMATCH; return yyTok;}
+"^=" {yyTok = BEGINSWITH; return yyTok;}
+"$=" {yyTok = ENDSWITH; return yyTok;}
+"*=" {yyTok = CONTAINS; return yyTok;}
+<mediaquery>"not" {yyTok = MEDIA_NOT; return yyTok;}
+<mediaquery>"only" {yyTok = MEDIA_ONLY; return yyTok;}
+<mediaquery>"and" {yyTok = MEDIA_AND; return yyTok;}
+
+{string} {yyTok = STRING; return yyTok;}
+{ident} {yyTok = IDENT; return yyTok;}
+{nth} {yyTok = NTH; return yyTok;}
+
+"#"{ident} {yyTok = IDSEL; return yyTok;}
+"#"{name} {yyTok = HEX; return yyTok;}
+
+"@import" {BEGIN(mediaquery); yyTok = IMPORT_SYM; return yyTok;}
+"@page" {yyTok = PAGE_SYM; return yyTok;}
+"@top-left-corner" {yyTok = TOPLEFTCORNER_SYM; return yyTok;}
+"@top-left" {yyTok = TOPLEFT_SYM; return yyTok;}
+"@top-center" {yyTok = TOPCENTER_SYM; return yyTok;}
+"@top-right" {yyTok = TOPRIGHT_SYM; return yyTok;}
+"@top-right-corner" {yyTok = TOPRIGHTCORNER_SYM; return yyTok;}
+"@bottom-left-corner" {yyTok = BOTTOMLEFTCORNER_SYM; return yyTok;}
+"@bottom-left" {yyTok = BOTTOMLEFT_SYM; return yyTok;}
+"@bottom-center" {yyTok = BOTTOMCENTER_SYM; return yyTok;}
+"@bottom-right" {yyTok = BOTTOMRIGHT_SYM; return yyTok;}
+"@bottom-right-corner" {yyTok = BOTTOMRIGHTCORNER_SYM; return yyTok;}
+"@left-top" {yyTok = LEFTTOP_SYM; return yyTok;}
+"@left-middle" {yyTok = LEFTMIDDLE_SYM; return yyTok;}
+"@left-bottom" {yyTok = LEFTBOTTOM_SYM; return yyTok;}
+"@right-top" {yyTok = RIGHTTOP_SYM; return yyTok;}
+"@right-middle" {yyTok = RIGHTMIDDLE_SYM; return yyTok;}
+"@right-bottom" {yyTok = RIGHTBOTTOM_SYM; return yyTok;}
+"@media" {BEGIN(mediaquery); yyTok = MEDIA_SYM; return yyTok;}
+"@font-face" {yyTok = FONT_FACE_SYM; return yyTok;}
+"@charset" {yyTok = CHARSET_SYM; return yyTok;}
+"@namespace" {yyTok = NAMESPACE_SYM; return yyTok; }
+"@-webkit-rule" {yyTok = WEBKIT_RULE_SYM; return yyTok; }
+"@-webkit-decls" {yyTok = WEBKIT_DECLS_SYM; return yyTok; }
+"@-webkit-value" {yyTok = WEBKIT_VALUE_SYM; return yyTok; }
+"@-webkit-mediaquery" {BEGIN(mediaquery); yyTok = WEBKIT_MEDIAQUERY_SYM; return yyTok; }
+"@-webkit-selector" {yyTok = WEBKIT_SELECTOR_SYM; return yyTok; }
+"@-webkit-keyframes" {yyTok = WEBKIT_KEYFRAMES_SYM; return yyTok; }
+"@-webkit-keyframe-rule" {yyTok = WEBKIT_KEYFRAME_RULE_SYM; return yyTok; }
+
+"@"{ident} {yyTok = ATKEYWORD; return yyTok; }
+
+"!"{w}"important" {yyTok = IMPORTANT_SYM; return yyTok;}
+
+{num}em {yyTok = EMS; return yyTok;}
+{num}rem {yyTok = REMS; return yyTok;}
+{num}__qem {yyTok = QEMS; return yyTok;} /* quirky ems */
+{num}ex {yyTok = EXS; return yyTok;}
+{num}px {yyTok = PXS; return yyTok;}
+{num}cm {yyTok = CMS; return yyTok;}
+{num}mm {yyTok = MMS; return yyTok;}
+{num}in {yyTok = INS; return yyTok;}
+{num}pt {yyTok = PTS; return yyTok;}
+{num}pc {yyTok = PCS; return yyTok;}
+{num}deg {yyTok = DEGS; return yyTok;}
+{num}rad {yyTok = RADS; return yyTok;}
+{num}grad {yyTok = GRADS; return yyTok;}
+{num}turn {yyTok = TURNS; return yyTok;}
+{num}ms {yyTok = MSECS; return yyTok;}
+{num}s {yyTok = SECS; return yyTok;}
+{num}Hz {yyTok = HERTZ; return yyTok;}
+{num}kHz {yyTok = KHERTZ; return yyTok;}
+{num}{ident} {yyTok = DIMEN; return yyTok;}
+{num}%+ {yyTok = PERCENTAGE; return yyTok;}
+{intnum} {yyTok = INTEGER; return yyTok;}
+{num} {yyTok = FLOATTOKEN; return yyTok;}
+
+"not(" {yyTok = NOTFUNCTION; return yyTok;}
+"url("{w}{string}{w}")" {yyTok = URI; return yyTok;}
+"url("{w}{url}{w}")" {yyTok = URI; return yyTok;}
+{ident}"(" {yyTok = FUNCTION; return yyTok;}
+
+U\+{range} {yyTok = UNICODERANGE; return yyTok;}
+U\+{h}{1,6}-{h}{1,6} {yyTok = UNICODERANGE; return yyTok;}
+
+<mediaquery>"{" |
+<mediaquery>";" {BEGIN(INITIAL); yyTok = *yytext; return yyTok; }
+. {yyTok = *yytext; return yyTok;}
+
+%%