bug#35670: guix package --roll-back message in Spanish is missing a line break

[sirgazil]

Hi,

I'm using this system:

$ guix describe
Generación 1    06 may 2019 11:29:00    (actual)
  guix d6a68e9
    URL del repositorio: https://git.savannah.gnu.org/git/guix.git
    rama: master
    revisión: d6a68e90483b35bdc2ea78afe2c81873be67ec95


After running "guix package --roll-back" in a system with a Spanish locale 
(es_CO.UTF-8), I see that the output is missing a line break, so the prompt 
appears immediately after the output:

##########
$ guix package --roll-back
se pasó de la generación 48 a la address@hidden ~/Escritorio$ guix package -I
##########

It should look like this instead:

##########
$ guix package --roll-back
se pasó de la generación 48 a la 47.
address@hidden ~/Escritorio$ guix package -I
##########


I didn't test if the issue actually depends on the locale.


---
https://sirgazil.bitbucket.io/