tag 32603 notabug
thanks

On 08/31/2018 11:44 AM, Paul Eggert wrote:

"sort --help" says:

*** WARNING ***
The locale specified by the environment affects sort order.
Set LC_ALL=C to get the traditional sort order that uses
native byte values.

and that's what you have run into.

To expound on Paul's answer:

> $ sort <foo
> t.co
> tec.co
> te.co

Let's run that with --debug to make it obvious:

$ printf 't.co\ntec.co\nte.co\n' | sort --debug
sort: using ‘en_US.UTF-8’ sorting rules
t.co
____
tec.co
______
te.co
_____

and realize that en_US.UTF-8 is a locale where punctuation is ignored when determining collation order (thus, 'tco' < 'tecco' < 'teco' once you strip out the ignored '.').