Re: egrep oddity
On Ne 05-02-12 | 23:04, Sven Joachim wrote:
> On 2012-02-05 22:31 +0100, Tomas Volka wrote:
> > On Ne 05-02-12 | 16:03, Neal Murphy wrote:
> >> For quite some time now, I've been getting peeved with egrep not doing what it
> >> should.
> >> I have Squeese installed and up-to-date. In an xterm running bash or on a
> >> console running bash or dash, this command:
> >> ls -C1 | egrep "^[A-Z]"
> >> returns all lines except those beginning with 'a'. Even the following commands
> >> exhibit similar behavior:
> >> alias|sed -e 's/^a/b/'|egrep "^[A-Z]" # passes sed's output untouched
> >> alias|sed -e 's/^a/A/'|egrep "^[A-Z]" # passes sed's output untouched
> >> These commands behave the same way on another Squeeze installation at another
> >> location. Also, 'grep -E' behaves the same way.
> >> The commands behave as expected on a different GNU/Linux system.
> >> Does anyone else see this behavior? Or do I need to clean my pipe and smoke
> >> something better?
> >> Thanks,
> >> N
> > The "^[A-Z]" range will never match line beginning with a, since the range
> > matches only uppercase characters.
> Not quite true, this very much depends on the locale.
Tried this under cs_CZ.UTF-8 and C locales and it behaves as i outlined. I'm curious
under which locale is the result different, as i've never experienced such behavior.