init

.zprezto/modules/screen/init.zsh

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+#
+# Defines GNU Screen aliases and provides for auto launching it at start-up.
+#
+# Authors:
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#   Georges Discry <georges@discry.be>
+#
+
+# Return if requirements are not found.
+if (( ! $+commands[screen] )); then
+  return 1
+fi
+
+#
+# Auto Start
+#
+
+if [[ -z "$STY" && -z "$EMACS" && -z "$VIM" ]] && ( \
+  ( [[ -n "$SSH_TTY" ]] && zstyle -t ':prezto:module:screen:auto-start' remote ) ||
+  ( [[ -z "$SSH_TTY" ]] && zstyle -t ':prezto:module:screen:auto-start' local ) \
+); then
+  session="$(
+    screen -list 2> /dev/null \
+      | sed '1d;$d' \
+      | awk '{print $1}' \
+      | head -1)"
+
+  if [[ -n "$session" ]]; then
+    exec screen -x "$session"
+  else
+    exec screen -a -A -U -D -R -m "$SHELL" -l
+  fi
+fi
+
+#
+# Aliases
+#
+
+alias scr='screen'
+alias scrl='screen -list'
+alias scrn='screen -U -S'
+alias scrr='screen -a -A -U -D -R'