From fafccbf9d5e189923ca44248492562fd50d17736 Mon Sep 17 00:00:00 2001
From: Christian Lentfort <unkieee@gmail.com>
Date: Sat, 21 Jun 2014 19:13:02 +0200
Subject: [PATCH] Added alias expansion and fixed README

---
 modules/explainshell/README.md |  7 +++---
 modules/explainshell/init.zsh  | 41 +++++++++++++++++++++++++++-------
 2 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/modules/explainshell/README.md b/modules/explainshell/README.md
index 28297efe..7324c253 100644
--- a/modules/explainshell/README.md
+++ b/modules/explainshell/README.md
@@ -1,10 +1,11 @@
 #Explainshell
 
-Adds a keybinding to open (explainshell.com)[http://www.explainshell.com] with the content of the command line.
+Adds a keybinding and a function to open 
+[explainshell.com](http://www.explainshell.com) with the content of the command
+line.
 
 ##Settings
-
 ###Key-Binding
-The keybinding to open (explainshell.com)[http://www.explainshell.com]
+The keybinding to open [explainshell.com](http://www.explainshell.com)
 
 `zstyle ':prezto:module:explainshell' key-binding '^K'`
diff --git a/modules/explainshell/init.zsh b/modules/explainshell/init.zsh
index b84d2e14..7e86cc40 100644
--- a/modules/explainshell/init.zsh
+++ b/modules/explainshell/init.zsh
@@ -5,27 +5,52 @@
 #   C Lentfort
 #
 
+function _expand_alias_recursive {
+  local _alias
+  for word in "$@"; do
+    # Check if word is aliased
+    _alias=$aliases[$word]
+    if [ -n "$_alias" ]; then
+      # Check if found alias and given command are identical
+      if [[ "$_alias" != "${(j: :)@}" ]]; then
+        _expand_alias_recursive "${(z)_alias}"
+      else
+        _explainshell_expanded_buffer+=$1
+      fi
+    else
+      _explainshell_expanded_buffer+=$word
+    fi
+  done
+}
 
 function explain {
+  local url
+  # We don't explain empty buffers
+  if (( $# == 0 )); then
+    return 1;
+  fi
+
+  # Replace aliases with their actual expansions
+  _explainshell_expanded_buffer=()
+  _expand_alias_recursive $@
+  _explainshell_expanded_buffer=(${(u)_explainshell_expanded_buffer})
   # base url with first command already injected
   # $ explain tar
   #   => http://explainshel.com/explain/tar?args=
-  url="http://explainshell.com/explain/$1?args="
-  
-  # removes $1 (tar) from arguments ($@)
-  shift;
-  
+  url="http://explainshell.com/explain?cmd="
+
   # iterates over remaining args and adds builds the rest of the url
-  for i in "$@"; do
+  for i in "$_explainshell_expanded_buffer"; do
     url=$url"$i""+"
   done
-  
+
+  unset _explainshell_expanded_buffer
   # opens url in browser
   $BROWSER -t $url &> /dev/null
 }
 
 function explainshell {
-    explain $BUFFER
+  explain ${(z)BUFFER}
 }
 
 zle -N explainshell