[Bug 1381567] Re: Bash returns unexpected character \001 on string operation

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: bash (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1381567

Title:
  Bash returns unexpected character \001 on string operation

Status in bash package in Ubuntu:
  Confirmed

Bug description:
  There has been some change between Precise and Trusty that lets this code snippet behave differently:
  

  Precise:
  $ unset f ; f=abcd ; first_char=${f[@]:0:1} ; echo $first_char
  a

  Trusty
  $ unset f ; f=abcd ; first_char=${f[@]:0:1} ; echo $first_char
  \001

  
  The solution is to use ${f:0:1} but nevertheless the result on Trusty seems completely wrong. Where does the \001 even come from?!

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