[Boost-users] [filesystem] remove_filename( ) - is this an error?

Subject: [Boost-users] [filesystem] remove_filename( ) - is this an error?
From: Robert Jones (robertgbjones_at_[hidden])
Date: 2010-04-26 09:53:04

Hi Guys

This bit of code...

#include <iostream>
#include <boost/filesystem.hpp>

int main( )
{
    const char * bits[] = { "first", "second", "third", "fourth", 0 };
    boost::filesystem::path path;
    for ( const char * * bit = bits; * bit; ++ bit )
    {
        path /= * bit;
    }

    while ( path.has_parent_path( ) )
    {
        std::cout << path << std::endl;
        path.remove_filename( );
    }
}

produces

first/second/third/fourth
first/second/third/
first/second/third
first/second/
first/second
first/

which surprised me, as the documentation says

basic_path& remove_filename();

 *Effects:* If has_parent_path() then remove the last *filename* from the
stored path. If that leaves the stored path with one or more trailing *slash
* elements not representing  *root-directory*, remove them.

Seems to me that remove_filename() does NOT remove trailing slashes as
stated.

- Rob.