When changing the "search for word characters" from greedy to
non-greedy, it starts to match whitespace characters.
Attached is an example program.
If you remove the '?' to make the search greedy, then it (correctly)
doesn't match.
I am using boost 1.31.0, on WinXP using VC7.1.
I have confirmed that this does not occur on my Linux machine.
Also attached is my Jamfile to make sure I didn't just compile it wrong.
It occurs in both debug and release mode.
John
=:->
project-root ;
exe test
: test.cpp
#unit_test_example1.cpp
: <sysinclude>$(BOOST_ROOT)
<stlport-iostream>on
<library-path>$(BOOST_ROOT)/../../lib
<debug><find-library>libboost_regex-vc71-mt-gd
<release><find-library>libboost_regex-vc71-mt
<gcc><debug><find-library>boost_regex-gcc-mt-d
<gcc><release><find-library>boost_regex-gcc-mt
<threading>multi
;
# vim: ts=4
#include
#include <iostream>
boost::regex re("(\\w*?)");
void doesMatch(std::string s) {
boost::smatch m;
std::cout << "String: \"" << s << "\"" << std::endl;
if(boost::regex_match(s, m, re)) {
std::cout << "Matched: ";
std::cout << "\"" << std::string(m[1]) << "\"" << std::endl;
} else {
std::cout << "Didn't match" << std::endl;
}
std::cout << std::endl;
}
int main(int argc, char **argv)
{
if(argc > 1)
for(int i = 1; i < argc; ++i)
doesMatch(argv[i]);
else {
char *arg[] = {"", "should", "should\tnot", "shou_ld", "should not"
," doesn't "
};
main(sizeof(arg)/sizeof(char*), arg);
}
}
