--- a/src/Pure/Thy/latex.ML	Thu Aug 03 00:41:07 2000 +0200
+++ b/src/Pure/Thy/latex.ML	Thu Aug 03 00:44:08 2000 +0200
@@ -26,7 +26,7 @@
 local
 
 val output_chr = fn
-  " " => "~" |
+  " " => "\\ " |
   "\n" => "\\isanewline\n" |
   "$" => "\\$" |
   "&" => "\\&" |