Wrongly character was replaced when using boost::regex

[tamber@…]

Hi, When I used regex_replace function to replace whitespace character in one string, I found that another character(0xa0 in memory) was also replaced.

The follow is my verification code:

int main(int argc, _TCHAR* argv[]) {

boost::regex whitespace_re("
s+"); string instr = "a c d f"; cout << "Before replace instr:" << instr << endl; instr = boost::regex_replace(instr, whitespace_re, "-"); cout << "After replaced instr: " << instr << endl;

string instr2 = "abcdef"; instr2[0]= 0xa0; instr2[2]= 0xa0; cout << "Before replace instr2:" << instr2 << endl; instr2 = boost::regex_replace(instr2, whitespace_re, "-"); cout << "After replaced instr2: " << instr2 << endl; return 0;

}

And the output is attached. Develop Environment: Windows 7 Professional(language is Einglish U.S.), VS2005.

[tamber@…]

output of verification code

[John Maddock]

That's correct behaviour: character 0xA0 is a "non-breaking space" and therefore correctly replaced in your test case.