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<TITLE>sane-devel: SANE_DEFAULT_DEVICE for scanimage (patch)</TITLE>
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<META NAME="Author" CONTENT="Ingo Wilken (Ingo.Wilken@Informatik.Uni-Oldenburg.DE)">
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<META NAME="Subject" CONTENT="SANE_DEFAULT_DEVICE for scanimage (patch)">
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<H1>SANE_DEFAULT_DEVICE for scanimage (patch)</H1>
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<!-- received="Mon Mar 27 14:12:05 2000" -->
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<!-- isoreceived="20000327221205" -->
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<!-- sent="Tue, 28 Mar 2000 00:26:57 +0200 (MET DST)" -->
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<!-- isosent="20000327222657" -->
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<!-- name="Ingo Wilken" -->
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<!-- email="Ingo.Wilken@Informatik.Uni-Oldenburg.DE" -->
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<!-- subject="SANE_DEFAULT_DEVICE for scanimage (patch)" -->
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<!-- id="E12ZhyL-0001ED-00@petersfehn.Informatik.Uni-Oldenburg.DE" -->
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<STRONG>From:</STRONG> Ingo Wilken (<A HREF="mailto:Ingo.Wilken@Informatik.Uni-Oldenburg.DE?Subject=Re:%20SANE_DEFAULT_DEVICE%20for%20scanimage%20(patch)&In-Reply-To=<E12ZhyL-0001ED-00@petersfehn.Informatik.Uni-Oldenburg.DE>"><EM>Ingo.Wilken@Informatik.Uni-Oldenburg.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Mar 27 2000 - 14:26:57 PST
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<P>
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<UL>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0285.html">Oliver Rauch: "Re: sane 1.0.2 - strangeness"</A>
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<A HREF="author.html#286">[ author ]</A>
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</UL>
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<HR NOSHADE><P>
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<!-- body="start" -->
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<P>
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This patch adds support for an environment variable SANE_DEFAULT_DEVICE
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<BR>
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to scanimage. Useful if the first device on the list is not your
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<BR>
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preferred device, and you don't want to use the --device option in
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<BR>
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every command.
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<BR>
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<P>I think I sent a similar patch for SANE-1.0.1 to this list some time
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<BR>
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ago. Anyway, it's not in 1.0.2, so I reimplemented it (with a minor
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<BR>
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improvement: if the variable is set, show its contents with -L).
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<BR>
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<P>Regards,
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<BR>
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Ingo
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<BR>
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<P><P>*** doc/scanimage.man.orig Thu Mar 16 05:25:19 2000
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<BR>
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--- doc/scanimage.man Thu Mar 16 05:38:45 2000
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<BR>
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***************
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<BR>
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*** 38,43 ****
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<BR>
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--- 38,47 ----
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<BR>
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.B --list-devices
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<BR>
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option (see below). If no device-name is specified explicitly,
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<BR>
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.B scanimage
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<BR>
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+ reads a device-name from the environment variable
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<BR>
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+ .BR SANE_DEFAULT_DEVICE .
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<BR>
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+ If this variable is not set,
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<BR>
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+ .B scanimage
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<BR>
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will attempt to open the first available device.
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<BR>
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.PP
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<BR>
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The
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<BR>
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***************
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<BR>
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*** 228,233 ****
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<BR>
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--- 232,241 ----
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<BR>
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.BR /tmp/input.ppm .
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<BR>
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.RE
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<BR>
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<BR>
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+ .SH ENVIRONMENT
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<BR>
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+ .TP
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<BR>
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+ .B SANE_DEFAULT_DEVICE
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<BR>
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+ The default device-name.
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<BR>
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.SH FILES
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<BR>
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.TP
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<BR>
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.I @CONFIGDIR@
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<BR>
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*** frontend/scanimage.c.orig Wed Mar 15 17:30:38 2000
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<BR>
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--- frontend/scanimage.c Wed Mar 15 18:05:17 2000
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<BR>
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***************
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<BR>
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*** 1062,1067 ****
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<BR>
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--- 1062,1068 ----
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<BR>
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const SANE_Device ** device_list;
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<BR>
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SANE_Int num_dev_options = 0;
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<BR>
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const char * devname = 0;
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<BR>
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+ const char * defdevname = 0;
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<BR>
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const char * format = 0;
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<BR>
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int batch = 0;
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<BR>
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SANE_Status status;
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<BR>
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***************
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<BR>
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*** 1075,1080 ****
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<BR>
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--- 1076,1083 ----
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<BR>
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else
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<BR>
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prog_name = argv[0];
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<BR>
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<BR>
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+ defdevname = getenv("SANE_DEFAULT_DEVICE");
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<BR>
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+
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<BR>
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sane_init (0, 0);
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<BR>
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<BR>
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/* make a first pass through the options with error printing and argument
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<BR>
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***************
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<BR>
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*** 1113,1118 ****
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<BR>
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--- 1116,1124 ----
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<BR>
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device_list[i]->name, device_list[i]->vendor,
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<BR>
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device_list[i]->model, device_list[i]->type);
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<BR>
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}
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<BR>
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+ if (defdevname)
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<BR>
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+ printf ("default device is `%s'\n", defdevname);
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<BR>
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+
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<BR>
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exit (0);
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<BR>
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}
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<BR>
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<BR>
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***************
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<BR>
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*** 1142,1150 ****
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<BR>
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<BR>
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if (!devname)
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<BR>
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{
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<BR>
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! /* If no device name was specified explicitly, we open the first
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<BR>
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! device we find (if any): */
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<BR>
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!
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<BR>
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status = sane_get_devices (&device_list, SANE_FALSE);
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<BR>
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if (status != SANE_STATUS_GOOD)
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<BR>
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{
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<BR>
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--- 1148,1159 ----
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<BR>
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<BR>
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if (!devname)
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<BR>
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{
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<BR>
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! /* If no device name was specified explicitly, we look at the
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<BR>
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! environment variable SANE_DEFAULT_DEVICE. If this variable
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<BR>
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! is not set, we open the first device we find (if any): */
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<BR>
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! devname = defdevname;
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<BR>
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! if (!devname )
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<BR>
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! {
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<BR>
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status = sane_get_devices (&device_list, SANE_FALSE);
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<BR>
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if (status != SANE_STATUS_GOOD)
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<BR>
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{
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<BR>
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***************
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<BR>
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*** 1158,1163 ****
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<BR>
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--- 1167,1173 ----
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<BR>
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exit (1);
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<BR>
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}
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<BR>
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devname = device_list[0]->name;
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<BR>
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+ }
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<BR>
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}
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<BR>
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<BR>
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status = sane_open (devname, &device);
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<BR>
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20SANE_DEFAULT_DEVICE%20for%20scanimage%20(patch)&In-Reply-To=<E12ZhyL-0001ED-00@petersfehn.Informatik.Uni-Oldenburg.DE>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0287.html">pixel fairy: "noisy umax astra 2200"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0285.html">Oliver Rauch: "Re: sane 1.0.2 - strangeness"</A>
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<SMALL>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Mon Mar 27 2000 - 14:12:52 PST</EM>
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</EM>
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</SMALL>
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