Hi Monks,

I am reading a file and then doing some regex updates on the buffer and then writing it out.

Seems simple enough, but I get some parts of the buffer at the end of the file (ie see some stuff twice). After much searching I found a post on the net with the exact error, but no fix...they did mention concern about using "+<" in the open, which I do...I have also tried sysread, no diff.

If I just print to STDOUT it ALWAYS looks correct...

Here is the skelton: (I am on Win32) 
use Fcntl qw(:DEFAULT :flock);
if (open(FILE, "+< stuff.txt"))
#if (sysopen(FILE, "stuff.txt", O_RDWR))
{
#    if (flock(FILE, LOCK_EX|LOCK_NB))
    {
        local $/ = undef;
        my $buff = <FILE>;
#        my $buff = '';
#        sysread(FILE, $buff, -s FILE);

        # DO STUFF TO $buff HERE, can GROW or SHRINK
        # Split it into pieces...

        seek(FILE, 0, 0);
        print FILE, $top_of_buffer;
        print FILE, $new_stuff;
        print FILE, $bot_of_buffer;
        close(FILE);

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In reply to file updating question by smackdab

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