added Jarmo Petermans expand-aliases plugin

plugins/expand_aliases/expand-aliases.plugin.zsh

@@ -0,0 +1,22 @@
+# Expand aliases when typing
+#
+# Read README.md for setup instructions.
+# 
+# Initially inspired by Gautam Iyer (https://wiki.math.cmu.edu/iki/wiki/tips/20140625-zsh-expand-alias.html)
+
+typeset -a ealiases
+ealiases=(`alias | sed -e 's/=.*//'`)
+
+_expand-ealias() {
+  if [[ $LBUFFER =~ "(^|[;|&])\s*(${(j:|:)ealiases})\$" ]]; then
+    zle _expand_alias
+    zle expand-word
+  fi
+  zle magic-space
+}
+
+zle -N _expand-ealias
+
+bindkey ' '    _expand-ealias
+bindkey '^ '   magic-space          # control-space to bypass completion
+bindkey -M isearch " "  magic-space # normal space during searches