[Bug 1004700] Re: xxd doesn't truncate output file

[Nick Dyer]

OK - this looks like this is documented behaviour, if a bit unexpected:

-r | -revert
    reverse operation: convert (or patch) hexdump into binary. If not writing to stdout, xxd writes into its output file without truncating it. Use the combination -r -p to read plain hexadecimal dumps without line number information and without a particular column layout. Additional Whitespace and line-breaks are allowed anywhere.

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Title:
  xxd doesn't truncate output file

Status in “vim” package in Ubuntu:
  New

Bug description:
  Steps to reproduce:

  $ echo 6162636465 > 1.txt
  $ xxd -r -p 1.txt out.bin
  $ xxd out.bin
  0000000: 6162 6364 65                             abcde
  $ echo 414243 > 2.txt
  $ xxd -r -p 2.txt out.bin
  $ xxd out.bin
  0000000: 4142 4364 65                             ABCde

  I would expect out.bin to be just "ABC" at this point.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: vim 2:7.3.154+hg~74503f6ee649-2ubuntu3
  ProcVersionSignature: Ubuntu 3.0.0-19.33-generic 3.0.27
  Uname: Linux 3.0.0-19-generic x86_64
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Fri May 25 21:55:29 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  SourcePackage: vim
  UpgradeStatus: No upgrade log present (probably fresh install)

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