[9fans] awk script weirdness

[Gregory Pavelcak <g.pavelcak@comcast.net>]

I've been trying to break a large .ms-like file into smaller
files with awk with variations on the following script

awk '
	BEGIN	{i=0}
	/^\.([lp]p|hd|xm\/)/	{print >> ++i; next}
			{print >> i}
' ../indis.ms

Whatever I do, it will work fine creating the first 85 files
then quit.

The above script quits with

awk: can't open file d�\x04
 input record ../indis.ms:830
 source line 3

While

awk '
	BEGIN	{i=0}
	/^\.([lp]p|hd|xm\/)/	{i=i+1; print >> i; next}
			{print >> i}
' ../indis.ms

quits with:

awk: can't open file D\x04\x06
 input record ../indis.ms:830
 source line 3

Any ideas?

Greg