: **uchange()**
Shows upstreams changelog of a given package in $PAGER.
-: **udiff()**
-Makes a unified diff of the command line arguments trying hard to find a
-smaller set of changes. Descends recursively into subdirectories. Ignores
-hows some information about current status.
-
: **uprint()**
Works around the "print -l ${(u)foo}"-limitation on zsh older than 4.2.