More escape sequence utilities

* Add `tmux-dcs-passthrough` to passthrough escape sequences tmux
  doesn't understand.
* Add `notify` to post a notification via the terminal emulator.

utilities/utilities.plugin.zsh

@@ -15,19 +15,36 @@ elif which xclip &> /dev/null; then
 fi
 
 # Abstract different ways to paste from the clipboard.
+# TODO: Use OSC-52 to get the clipboard, not widely supported though
 if [ "`uname`" = "Darwin" ]; then
+  # Use pbpaste to get the clipboard
   alias paste='pbpaste'
 elif which xclip &> /dev/null; then
+  # Use xclip to get the clipboard
   alias paste='xclip -selection c -o'
 fi
 
+# Passthrough an escape sequences tmux doesn't know about.
+tmux-dcs-passthrough() {
+  if [ -n "$TMUX" ]; then
+    printf "\x1bPtmux;\x1b$1\x1b\\"
+  else
+    printf "$1"
+  fi
+}
+
+# OSC 9 - Post a notification - supported by iTerm2, maybe others?
+notify() {
+  tmux-dcs-passthrough "\x1b]9;$*\x7"
+}
+
 # Detect the type and extract an archive file.
 extract() {
   if [ -f $1 ]; then
     case $1 in
       *.tar.bz2)  tar xvjf $1 ;;
       *.tar.gz)   tar xvzf $1 ;;
-      *.tar.xz)    gunzip $1      ;;
+      *.tar.xz)   [ `"uname"` = "Darwin" ] && tar xvJf $1 || gunzip $1 ;;
       *.bz2)      bunzip2 $1 ;;
       *.rar)      unrar x $1 ;;
       *.gz)       gunzip $1 ;;

zshenv

@@ -81,6 +81,7 @@ which pinentry-curses &> /dev/null && \
   export LPASS_PINENTRY=pinentry-curses
 
 # Teach these some XDG Base Directory Spec manners
+export IPYTHONDIR=$HOME/.config/ipython
 which cargo &> /dev/null && \
   export CARGO_HOME=$HOME/.local/share/cargo
 if which ccache &> /dev/null; then