--- bash-4.2/redir.c	2015-04-27 23:03:55.663182162 +0200

+++ bash-4.2/redir.c	2015-04-27 23:03:13.995181816 +0200

@@ -63,6 +63,7 @@ int expanding_redir;

 extern int posixly_correct;

 extern int last_command_exit_value;

+extern int executing_builtin;

 extern REDIRECT *redirection_undo_list;

 extern REDIRECT *exec_redirection_undo_list;

@@ -307,11 +308,23 @@ write_here_string (fd, redirectee)

      WORD_DESC *redirectee;

 {

   char *herestr;

-  int herelen, n, e;

+  int herelen, n, e, old;

   expanding_redir = 1;

+  /* Now that we've changed the variable search order to ignore the temp

+     environment, see if we need to change the cached IFS values. */

+  sv_ifs ("IFS");

   herestr = expand_string_to_string (redirectee->word, 0);

   expanding_redir = 0;

+  /* Now we need to change the variable search order back to include the temp

+     environment.  We force the temp environment search by forcing

+     executing_builtin to 1.  This is what makes `read' get the right values

+     for the IFS-related cached variables, for example. */

+  old = executing_builtin;

+  executing_builtin = 1;

+  sv_ifs ("IFS");

+  executing_builtin = old;

+

   herelen = STRLEN (herestr);

   n = write (fd, herestr, herelen);