From b5d9e547f2538e073186ccd403dd075529c3ec31 Mon Sep 17 00:00:00 2001
From: Tobias Witt <tobias.witt@hhu.de>
Date: Wed, 21 Jan 2015 23:02:20 +0100
Subject: [PATCH 1/2] Use `tee` to replace the alias files content instead of
 `>`

As mentioned in #615 it is possible to configure `>` to not override
existing files by default. `tee` is a standard tool that can be used
shell independent.
---
 nvm.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nvm.sh b/nvm.sh
index fbbf663..ee13d9d 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -1448,7 +1448,7 @@ $NVM_LS_REMOTE_IOJS_OUTPUT" | command grep -v "N/A" | sed '/^$/d')"
       if [ $? -ne 0 ]; then
         echo "! WARNING: Version '$3' does not exist." >&2
       fi
-      echo "$3" > "$NVM_ALIAS_DIR/$2"
+      echo "$3" | tee "$NVM_ALIAS_DIR/$2"
       if [ ! "_$3" = "_$VERSION" ]; then
         echo "$2 -> $3 (-> $VERSION)"
       else

From cba50946527152d3fff772de6ae462d15ef5dfe9 Mon Sep 17 00:00:00 2001
From: Tobias Witt <tobias.witt@hhu.de>
Date: Thu, 22 Jan 2015 12:20:09 +0100
Subject: [PATCH 2/2] Provide test case for testing the `noclobber` option from
 zsh

This tests the absence of the bug from #615
---
 ...<target>\" again should change the target" | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 "test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"

diff --git "a/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target" "b/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"
new file mode 100755
index 0000000..d4a8a2d
--- /dev/null
+++ "b/test/fast/Aliases/Running \"nvm alias <aliasname> <target>\" again should change the target"	
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+. ../../../nvm.sh
+
+die () { echo $@ ; exit 1; }
+
+if [ -n "$ZSH_VERSION" ]; then
+  # set clobber option in order to test that this does not produce any
+  # incompatibilities
+  setopt noclobber
+fi
+
+nvm alias test-stable-1 0.0.2
+
+nvm alias test-stable-1 | \grep -e "test-stable-1 -> 0.0.2 (-> v0.0.2)" \
+  || die "nvm alias test-stable-1 0.0.2 did not set test-stable-1 to 0.0.2"
+
+nvm alias test-stable-1 0.0.1
+
+nvm alias test-stable-1 | \grep -e "test-stable-1 -> 0.0.1 (-> v0.0.1)" \
+  || die "nvm alias test-stable-1 0.0.1 did not set test-stable-1 to 0.0.1"