From 79fbae08547953b02d40f704ac3e95c8448d5dba Mon Sep 17 00:00:00 2001
From: Greg Lucas <greg@glucas.net>
Date: Tue, 11 Nov 2014 10:40:57 -0500
Subject: [PATCH] Add an unalias command

Add bin/unalias.bat to perform the opposite action of alias.bat.
Removes a given alias from the current shell environment and the
aliases file.

Fixes issue #281.
---
 bin/unalias.bat | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 bin/unalias.bat

diff --git a/bin/unalias.bat b/bin/unalias.bat
new file mode 100644
index 0000000..8dc855a
--- /dev/null
+++ b/bin/unalias.bat
@@ -0,0 +1,28 @@
+@echo off
+if ["%1"] == ["/?"] goto:p_help
+if ["%1"] == [""] echo Insufficient parameters. & goto:p_help
+
+setlocal
+
+:: Check if alias exists
+doskey /macros | findstr /b %1= >NUL || goto :p_not_found
+
+:: Remove alias from current shell
+doskey %1=
+
+:: Remove alias from aliases file
+copy /y "%CMDER_ROOT%\config\aliases" "%TEMP%\aliases.prev" >NUL
+type "%TEMP%\aliases.prev" | findstr /b /v %1= > "%CMDER_ROOT%\config\aliases"
+echo Alias removed
+
+endlocal
+goto:eof
+
+:p_not_found
+echo Alias not defined.
+goto:eof
+
+:p_help
+echo.Usage:
+echo.	unalias name
+echo.	For more information, read DOSKEY/?