fix for heuristic to detect case statements when parsing $() command substitutions to find history expansion; fix for history not being saved if a SIGHUP arrives during $PROMPT_COMMAND execution; workaround for Cygwin bug that results in bash incorrectly calculating the system pipe size

variables.c

@@ -652,7 +652,7 @@ initialize_shell_variables (char **env, int privmode)
   /* Set history variables to defaults, and then do whatever we would
      do if the variable had just been set.  Do this only in the case
      that we are remembering commands on the history list. */
-  if (remember_on_history)
+  if (enable_history_list)
     {
       name = bash_default_histfile ();
 
@@ -677,7 +677,7 @@ initialize_shell_variables (char **env, int privmode)
     }
 
 #if defined (HISTORY)
-  if (interactive_shell && remember_on_history)
+  if (interactive_shell && enable_history_list)
     {
       sv_history_control ("HISTCONTROL");
       sv_histignore ("HISTIGNORE");