/* html_tags.l
   Build: flex html_tags.l && gcc lex.yy.c -lfl -o htmltags && ./htmltags
*/
%{
#include <stdio.h>
%}
%%
"<"[ \t]*"/"[ \t]*[a-zA-Z][a-zA-Z0-9-]*[ \t]*">"   { printf("END TAG: %s\n", yytext); }
"<"[ \t]*[a-zA-Z][a-zA-Z0-9-]*[^>]*">"             { printf("START TAG: %s\n", yytext); }
[^<\n]+                                           { /* text */ }
\n                                                { /* newline */ }
.                                                 { /* any other */ }
%%
int main(){ yylex(); return 0; }
 

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