GNU Moe's buffer data management

moe_insert.c

void Basic_buffer::add_line( const char * const buf, const int len )
  {
  data.back().append( buf, len );
  if( data.back().size() && data.back()[data.back().size()-1] == '\n' )
	{
	if( data.size() >= data.capacity() && data.size() >= 10000 )
	  data.reserve( data.size() + ( data.size() / 10 ) );
	data.push_back( std::string() );
	}
  }