[Fix #514] Use /tmp when $TMPDIR is undefined

modules/gpg/init.zsh

@@ -12,7 +12,7 @@ fi
 
 # Set the default paths to gpg-agent files.
 _gpg_agent_conf="$HOME/.gnupg/gpg-agent.conf"
-_gpg_agent_env="$TMPDIR/gpg-agent.env"
+_gpg_agent_env="${TMPDIR:-/tmp}/gpg-agent.env"
 
 # Start gpg-agent if not started.
 if ! ps -U "$USER" -o ucomm | grep -q gpg-agent; then

modules/pacman/functions/pacman-list-disowned

@@ -6,7 +6,7 @@
 #   Sorin Ionescu <sorin.ionescu@gmail.com>
 #
 
-local tmp="$TMPDIR/pacman-disowned-$UID-$$"
+local tmp="${TMPDIR:-/tmp}/pacman-disowned-$UID-$$"
 local db="$tmp/db"
 local fs="$tmp/fs"
 

modules/ssh/init.zsh

@@ -14,10 +14,10 @@ fi
 _ssh_dir="$HOME/.ssh"
 
 # Set the path to the environment file if not set by another module.
-_ssh_agent_env="${_ssh_agent_env:-$TMPDIR/ssh-agent.env}"
+_ssh_agent_env="${_ssh_agent_env:-${TMPDIR:-/tmp}/ssh-agent.env}"
 
 # Set the path to the persistent authentication socket.
-_ssh_agent_sock="$TMPDIR/ssh-agent.sock"
+_ssh_agent_sock="${TMPDIR:-/tmp}/ssh-agent.sock"
 
 # Start ssh-agent if not started.
 if [[ ! -S "$SSH_AUTH_SOCK" ]]; then