Re: BUG in tr when lowercase letters 'o', 'p' & 'e' file names in the same directory

[Bob Proulx]

Gaafer Goreish wrote:
> I discovered that if there is a file with the one lowercase letter name 'o'
> or 'p'  or 'e' in the same directory where the tr command is executed it
> generates an error or unexpected result.

Thank you for your report.  However this is not a bug in tr.  It is
insufficient quoting of shell arguments.

> Following is the the simple commands used to re-produce this bug
> 
> address@hidden:# echo hello | tr [:lower:] [:upper:]

That has insufficiently quoted arguments.  The shell will expand
them.  You must quote them.  Try this:

  echo hello | tr "[:lower:]" "[:upper:]"

Your question is a variation on the theme behind this FAQ:

  http://www.gnu.org/software/coreutils/faq/#expr-2-_002a-3-does-not-work

Bob