validate-docx.sh: print list of files that fail validation.

tools/validate-docx.sh

@@ -3,8 +3,10 @@
 # to look at more files than just document.xml.
 # Further modified by jgm for portability.
 tmpdir=$(mktemp -d)
+error_files=""
 errors=0
 for file in "$@"; do
+  file_errors=0
   echo "*** Checking $file"
   rm -rf "$tmpdir"
   unzip -q -o -j "$file" -d "$tmpdir"
@@ -15,7 +17,14 @@ for file in "$@"; do
   for i in "$tmpdir"/*-pretty.xml; do
     xmllint -noout -nonet \
       -schema "${XSD}" \
-      "${i}" 2>&1 || errors=$((errors + 1))
+      "${i}" 2>&1 || file_errors=$((file_errors + 1))
   done
+  if [ $file_errors -gt 0 ]; then
+      errors=$((file_errors + errors))
+      error_files="$error_files\n$file"
+  fi
 done
+if [ $errors -gt 0 ]; then
+   echo "These files failed validation:$error_files"
+fi
 exit $errors