Ubuntu
gnome-terminal package

  1. Bug #130289
  2. Comment #2

Comment 2 for bug 130289

Revision history for this message
Jean-Baptiste Lallement (jibel) wrote : Re: synaptic proxy password must not contain "@" sign

According to the specs (http://www.w3.org/Addressing/rfc1738.txt) the scheme http://<user>:<password>@<host>:<port>/ is not valid.
The specs also mentioned that:
"The user name (and password), if present, are followed by a
   commercial at-sign "@". Within the user and password field, any ":",
   "@", or "/" must be encoded.
"

So there is a synaptic issue not encoding username and password and an apt issue accepting an invalid scheme but this behavior is documented in the apt.conf man page.
Setting to triaged.