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From: bwc@coraid.com
To: 9fans@cse.psu.edu
Subject: Re: [9fans] deadlock in page(1)
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Date: Wed,  8 Jan 2003 06:50:44 -0500
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Is this a problem in pdf2ps also?  When I ps2pdf'ed fossil.pdf and sent the
result to my HP4000, the printer hung.  Had to power cycle it.

 Brantley
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To: 9fans@cse.psu.edu
From: Richard Miller <miller@hamnavoe.demon.co.uk>
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Subject: [9fans] deadlock in page(1)
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Date: Wed, 8 Jan 2003 11:40:28 0000

When page calls gs to display a postscript file which uses \r as a line
terminator (not \n or \r\n), deadlock ensues.  Here's a correction (which
may also reduce the need for the '-P' option):

/sys/src/cmd/page/ps.c:429 a ps.c:430,434
> 	/*
> 	 * If last line terminator is \r, gs will read ahead to check for \n
> 	 * so send one to avoid deadlock.
> 	 */
> 	write(ps->gsfd, "\n", 1);

-- Richard Miller

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