From b879628394ef763baa0a720b4dade2cdc06714d5 Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Thu, 16 Mar 2017 04:07:37 +0800
Subject: [PATCH] [Fix] declare MANPATH if and only if it's not set

By manpath's man page in Ubuntu 16.04:

> If $MANPATH is set, manpath will simply display its contents and issue
> a warning.

By fa22d712ff7367fc0ecc87bbe8801d77303068e3 for #1413, `nvm` now will
declare the "MANPATH" variable, no matter if it's set or not, so in the
situation that $MANPATH is set, you'll get the warning:

> manpath: warning: $MANPATH set, ignoring /etc/manpath.config
---
 nvm.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nvm.sh b/nvm.sh
index 122b728..336760e 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -2661,8 +2661,8 @@ nvm() {
       # Prepend current version
       PATH="$(nvm_prepend_path "$PATH" "$NVM_VERSION_DIR/bin")"
       if nvm_has manpath; then
-        local MANPATH
         if [ -z "$MANPATH" ]; then
+          local MANPATH
           MANPATH=$(manpath)
         fi
         # Strip other version from MANPATH