From 7cba6cd6d0dc0a126f12360d0523afe0c0bf9fce Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Sat, 6 Jan 2018 09:34:11 -0800
Subject: [PATCH] `install.sh`: detect a defined but nonexistent $NVM_DIR

(ref: #1700)
---
 install.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/install.sh b/install.sh
index 51314f9..de61f3b 100755
--- a/install.sh
+++ b/install.sh
@@ -294,6 +294,10 @@ nvm_check_global_modules() {
 }
 
 nvm_do_install() {
+  if [ -n "${NVM_DIR-}" ] && ! [ -d "${NVM_DIR}" ]; then
+    echo >&2 "You have \$NVM_DIR set to \"${NVM_DIR}\", but that directory does not exist. Check your profile files and environment."
+    exit 1
+  fi
   if [ -z "${METHOD}" ]; then
     # Autodetect install method
     if nvm_has git; then
@@ -323,7 +327,7 @@ nvm_do_install() {
   local NVM_PROFILE
   NVM_PROFILE="$(nvm_detect_profile)"
   local PROFILE_INSTALL_DIR
-  PROFILE_INSTALL_DIR="$(nvm_install_dir| sed "s:^$HOME:\$HOME:")"
+  PROFILE_INSTALL_DIR="$(nvm_install_dir | sed "s:^$HOME:\$HOME:")"
 
   SOURCE_STR="\\nexport NVM_DIR=\"${PROFILE_INSTALL_DIR}\"\\n[ -s \"\$NVM_DIR/nvm.sh\" ] && \\. \"\$NVM_DIR/nvm.sh\"  # This loads nvm\\n"
   # shellcheck disable=SC2016