Re: excess braces ignored: bug or feature ?

[Bob Proulx]

Greg Wooledge wrote:
> Mike Frysinger wrote:
> > can't tell if this is a bug or a feature.
> > 
> > FOO= BAR=bar
> > : ${FOO:=${BAR}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
> > echo $FOO
> > 
> > i'd expect an error, or FOO to contain those excess braces.  instead, FOO 
> > is 
> > just "bar".
> 
> imadev:~$ : ${FOO:=BAR}qqqqqqqqqqqq
> imadev:~$ echo "$FOO"
> BAR
> 
> It looks OK to me.  You've got an argument word which happens to contain
> a substitution-with-side-effects as part of it.

Or slightly differently expressed it is this too:

  $ echo ${FOO:=BAR}qqqqqqqqqqqq
  BARqqqqqqqqqqqq

  $ echo ${FOO:=BAR}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
  BAR}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}

  $ echo ${FOO:=${BAR}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
  }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}

Seems reasonable to me.  In that context the bracket isn't special in
any way and is just another character in the string.  Just like this:

  $ echo }}}}
  }}}}

Bob