Index: /issm/trunk-jpl/etc/environment.sh
===================================================================
--- /issm/trunk-jpl/etc/environment.sh	(revision 26122)
+++ /issm/trunk-jpl/etc/environment.sh	(revision 26123)
@@ -10,6 +10,8 @@
 #
 
-# Silence `zsh: no matches found: <file>`
-setopt +o nomatch 1> /dev/null 2>&1
+if [[ -n "$ZSH_VERSION" ]]; then
+	# Silence `zsh: no matches found: <file>`
+	setopt +o nomatch 1> /dev/null 2>&1
+fi
 
 ## Functions