Hi all. I have a "really long string" with many parts to it (something like an IMAP response that needs to be manually processed). So it has sections like:

FLAGS (\Seen) UID 42 RFC822.TEXT {234565}
this is a bunch of string data, but 
it also contains some binary data...it's not actually
IMAP code, it's an internal app that works similarly, but
a lot more people are more familiar with IMAP...
..snip..
a lot more string
 RFC822.SIZE 234565  INTERNALDATE " 21 FEB 2016 12:23:23 +1000")

[download]
So, I need to work through each part of the string, which I am doing just fine. However, when I come to the part "RFC822.TEXT {234565}" I now need to read exactly 234565 from the string. I am processing this with the m//g operator, so each time I call m//g it matches the string from where I left off the last match. So the code I have, to work through the string, because there is a limit to the n-times match of 32766, is the following: 
while( $sz > 32760 ) {
   $m =~ /(^.{32760})/g;
   print $FH $1;
   $sz -= 32760;
}
$m =~ /(^.{$sz})/g;
print $FH $1;

[download]

...except the m/(^.{32760})/g isn't matching, and the string pos() is being reset.

Any ideas why? Your input would be gratefully be accepted, I've been banging away at this with various incarnations for more hours than I care to admit :-(

In reply to Matching n characters with m//g by medium.dave

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