Merge pull request #69 from o11c/zsh

Add a good zsh solution

solutions/complete/zsh/soln1/goal.zsh

@@ -0,0 +1,27 @@
+#!/usr/bin/zsh
+# This solution uses no external commands and does not open itself as input.
+# Shells do not support the concept of returning strings from functions.
+
+debug_trap()
+{
+    if [[ "${ZSH_DEBUG_CMD/ }" == 'g('* ]]
+    then
+        local cmd
+        cmd=${ZSH_DEBUG_CMD//'()'/o}
+        rv=${cmd//[^a-z]/}
+        echo $rv
+        set -e
+        return
+    fi
+}
+
+al=1
+trap debug_trap DEBUG
+
+g()()()('al')
+g()()('al')
+g()('al')
+g('al');
+g()('at')
+g()()('at')
+g()()()('at')