CLI option for mask pattern about libqrencode

[lefuturiste]

I think the default mask for this lib is 101 (cf. https://blog.qartis.com/decoding-small-qr-codes-by-hand/photos/thumbnails/qr-mask.png)

[jan-slupski]

Also looking for that option. Some online tools expose the mask choice but would be so handy to have it in a standard tool. Thanks!

[PSLLSP]

I tried to generate several QR codes with qrencode and it seems there is no default mask pattern, like generator randomly selects mask pattern. Maybe it is not random but optimal pattern; when I create the same QR code again and again, it has the same pattern but when I try different data, I see different mask pattern is used for each QR...

qrencode -l M -t utf8 'testX' and replace X with other character, like digits 0-9 or anything else. Just a small change to data and the generated QR will have different mask pattern...

$ qrencode  -V
qrencode version 4.1.1
Copyright (C) 2006-2017 Kentaro Fukuchi

Screenshots from QRazyBox