[sane-devel] '--device-name=dev' works but '-d dev' fails

[Alain.Cochard at unistra.fr]

Hello.

$ scanimage --device-name='airscan:e0:Canon TS5000 series' --format=jpeg > certif.jpg

worked as expected but

$ scanimage -d 'airscan:e0:Canon TS5000 series' --format=jpeg > certif.jpg

failed.  The file is void and I get this message:

scanimage: open of device airscan:e0:Canon TS5000 series failed: Invalid argument

Incidentally:

$ scanimage -L

gives me

device `v4l:/dev/video2' is a Noname Integrated_Webcam_HD: Integrate virtual device
device `v4l:/dev/video0' is a Noname Integrated_Webcam_HD: Integrate virtual device
device `airscan:e0:Canon TS5000 series' is a eSCL Canon TS5000 series ip=192.168.1.4

and it took me a while to find out that I needed the quotes for this command to work:

$ scanimage --help -d 'airscan:e0:Canon TS5000 series'

It makes sense, but it might be mentioned in the man page.

Also

$ scanimage -h -d 'airscan:e0:Canon TS5000 series'

fails (with same message as above) which is surprising.

Regards

$ uname -a
Linux frac 6.14.5-200.fc41.x86_64 #1 SMP PREEMPT_DYNAMIC Fri May  2 14:06:21 UTC 2025 x86_64 GNU/Linux

PS: at http://www.sane-project.org/mailing-lists.html I read

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which is clear enough.  However, at
https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/sane-devel, I only
see

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-- 
EOST (École et Observatoire des Sciences de la Terre) 
ITE (Institut Terre & Environnement) | alain.cochard at unistra.fr
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