diff --git a/pkgs/build-support/setup-hooks/find-xml-catalogs.sh b/pkgs/build-support/setup-hooks/find-xml-catalogs.sh index 85364a61f61..f446a6f27fd 100644 --- a/pkgs/build-support/setup-hooks/find-xml-catalogs.sh +++ b/pkgs/build-support/setup-hooks/find-xml-catalogs.sh @@ -11,12 +11,12 @@ addXMLCatalogs () { done } -if [ -z "$libxmlHookDone" ]; then +if [ -z "${libxmlHookDone-}" ]; then libxmlHookDone=1 # Set up XML_CATALOG_FILES. An empty initial value prevents # xmllint and xsltproc from looking in /etc/xml/catalog. - export XML_CATALOG_FILES + export XML_CATALOG_FILES='' if [ -z "$XML_CATALOG_FILES" ]; then XML_CATALOG_FILES=" "; fi addEnvHooks "$hostOffset" addXMLCatalogs fi