[Fix] `nvm uninstall`: work around `nomatch` `zsh` option.

Fixes #1228.

nvm.sh

@@ -2041,16 +2041,31 @@ nvm_is_natural_num() {
 
 # Check version dir permissions
 nvm_check_file_permissions() {
+  local ZSH_HAS_NONOMATCH_UNSET
+  ZSH_HAS_NONOMATCH_UNSET=1
+  if nvm_has "setopt"; then
+    ZSH_HAS_NONOMATCH_UNSET="$(set +e ; setopt | nvm_grep nonomatch > /dev/null ; nvm_echo $?)"
+    setopt nonomatch
+  fi
   for FILE in $1/* $1/.[!.]* $1/..?* ; do
       if [ -d "$FILE" ]; then
         if ! nvm_check_file_permissions "$FILE"; then
+          if [ "${ZSH_HAS_NONOMATCH_UNSET}" -eq 1 ] && nvm_has "setopt"; then
+            setopt nomatch
+          fi
           return 2
         fi
       elif [ -e "$FILE" ] && [ ! -w "$FILE" ]; then
         nvm_err "file is not writable: $(nvm_sanitize_path "$FILE")"
+        if [ "${ZSH_HAS_NONOMATCH_UNSET}" -eq 1 ] && nvm_has "setopt"; then
+          setopt nomatch
+        fi
         return 1
       fi
   done
+  if [ "${ZSH_HAS_NONOMATCH_UNSET}" -eq 1 ] && nvm_has "setopt"; then
+    setopt nomatch
+  fi
   return 0
 }
 

test/slow/nvm uninstall/Running "nvm uninstall 0.12.6" uninstalls v0.12.6

@@ -20,6 +20,11 @@ nvm ls | grep "$NVM_TEST_VERSION" || die "Failed to install node"
 # Switch to another version so we can uninstall
 nvm use 0.12.7
 
+# if zsh, set "nomatch" opt to reproduce failure from https://github.com/creationix/nvm/issues/1228
+if nvm_has "setopt"; then
+  setopt nomatch
+fi
+
 # Uninstall it
 nvm uninstall $NVM_TEST_VERSION