From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <10448d781152600dab2fec6cee720288@hamnavoe.demon.co.uk>
To: 9fans@cse.psu.edu
From: Richard Miller <miller@hamnavoe.demon.co.uk>
In-Reply-To: <0c17a7e1153d16dbd94d0f2a5fe7b1a0@plan9.bell-labs.com>
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Subject: [9fans] deadlock in page(1)
Date: Wed,  8 Jan 2003 11:40:28 +0000
Topicbox-Message-UUID: 3c4afeb0-eacb-11e9-9e20-41e7f4b1d025

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