Comment 25 for bug 1242108

#all in one manual fix for Ubuntu 14.04 with zsh-5.0.2 (based on mchelen's one-liner):

# get zsh tar file and uncompress its Doc folder to /usr/share/man/man1
wget -qO- "http://downloads.sourceforge.net/project/zsh/zsh/5.0.2/zsh-5.0.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fzsh%2Ffiles%2Fzsh%2F5.0.2%2F&ts=1407408881&use_mirror=superb-dca3" | sudo tar xvz -C /usr/share/man/man1/ --wildcards "zsh-5.0.2/Doc/*.1" --strip-components=2

# fix permissions
sudo chown root:root /usr/share/man/man1/zsh*.1
sudo chmod 0644 /usr/share/man/man1/zsh*.1

# gzip the new zsh man pages (all others are gzipped as well)
sudo gzip /usr/share/man/man1/zsh*.1

# renew the man database (so that man -k or apropos finds the newly installed man pages)
sudo mandb

# show installed zsh man pages
man -k zsh