--- gnus-cache.el.orig	2002-08-05 16:30:26.000000000 +0900
+++ gnus-cache.el	2002-10-13 14:21:41.000000000 +0900
@@ -179,6 +179,11 @@
 	    (when (> (buffer-size) 0)
 	      (let ((coding-system-for-write gnus-cache-coding-system))
 		(gnus-write-buffer file))
+	      (save-restriction
+		(nnheader-narrow-to-headers)
+		(nnheader-ms-strip-cr)
+		(nnheader-fold-continuation-lines)
+		(subst-char-in-region (point-min) (point-max) ?\t ? ))
 	      (setq headers (nnheader-parse-head t))
 	      (mail-header-set-number headers number)
 	      (gnus-cache-change-buffer group)