Bug #13131: ArgumentError: string contains null byte

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: 2.4.0
• Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN

[voobscout (voob scout)]

Why does this not work?:

IO.binwrite(0.chr, '/tmp/test.txt')

If it's not a bug, then please somebody explain - how strings containing null bytes can be written to disk?

say there's a thermal printer command [29, 49, 75, 2, 0, 49, 120].map(&:chr).join that needs to be part of data sent to print, how would this be accomplished in ruby?

[Eregon (Benoit Daloze)]

• Status changed from Open to Rejected

You inverted the order of the arguments, it's the filename first:

IO.binwrite('/tmp/test.txt', 0.chr)

[voobscout (voob scout)]

Benoit Daloze wrote:

You inverted the order of the arguments, it's the filename first:

IO.binwrite('/tmp/test.txt', 0.chr)

Dear Sir! Thank you so much!