# http://docs.python.org/reference/lexical_analysis.html
def perm(l):
        # Compute the list of all permutations of l
    if len(l) <= 1:
                  return [l]
    r = []
    for i in range(len(l)):
             s = l[:i] + l[i + 1:]
             p = perm(s)
             """ hello, world !
                     of rasta/ \"""
             """
             for x in p:
              r.append(l[i : i + 1] + x)
              if 1 == 1:
                       if  6  == 999:
                         if 9 == 666: pass
    return r

def foo():
      if  1 == 1:
             a = [1,
2,3,4];
             return 0;

> "если она не развалится, то смело можно брать", я как-то даже не уверен

# http://docs.python.org/reference/lexical_analysis.html
def perm(l):
    # Compute the list of all permutations of l
    if len(l) <= 1:
        return [l]
    r = []
    for i in range(len(l)):
        s = l[:i] + l[i + 1:]
        p = perm(s)
        """ hello, world !
                     of rasta/ \"""
             """
        for x in p:
            r.append(l[i : i + 1] + x)
            if 1 == 1:
                if  6  == 999:
                    if 9 == 666: pass
    return r

%{
%}

%option c++
%option yywrap
%option stack
%pointer

spaces   [ ]{4}
%%

{spaces}   { 
    REJECT;
    std::cout << "\t";
}

%%

int main( int /* argc */, char** /* argv */ )
{
    FlexLexer* lexer = new yyFlexLexer;
    while(lexer->yylex() != 0)
     ;
    return 0;
}

int yyFlexLexer::yywrap()
{
    return 1;
}

flex --c++ <you-file-name>.ll
g++ -W -Wall -Wextra -ansi -g lex.yy.cc -o test

%{
int tabs = 0;
%}

%option c++
%option yywrap

spaces   [ ]{4}
%%

{spaces}   { 
    tabs++;
}

. {
    if(tabs > 0)
    {
        for(;tabs > 0;tabs--)
        {
            std::cout << "\t";
        }
    }
    ECHO;
}

%%

int main( int /* argc */, char** /* argv */ )
{
    FlexLexer* lexer = new yyFlexLexer;
    while(lexer->yylex() != 0)
     ;
    return 0;
}

int yyFlexLexer::yywrap()
{
    return 1;
}

MTD>        p = perm(s)
MTD>        """ hello, world !
MTD>                     of rasta/ \"""
MTD>             """
^^^^^^^^^^^^^^^^^^^^^^
MTD>        for x in p:
MTD>

if a == b:
#         print "a == b"
         foo(a);