1 files changed, 4 insertions, 1 deletions
diff --git a/gdb/top.c b/gdb/top.c
index bc61d3b..72fbebd 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -1670,7 +1670,10 @@ Without an argument, saving is enabled."),
   add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\
 Set the size of the command history,"), _("\
 Show the size of the command history,"), _("\
-ie. the number of previous commands to keep a record of."),
+ie. the number of previous commands to keep a record of.\n\
+If set to \"unlimited\", the number of commands kept in the history\n\
+list is unlimited.  This defaults to the value of the environment\n\
+variable \"HISTSIZE\", or to 256 if this variable is not set."),
 			    set_history_size_command,
 			    show_history_size,
 			    &sethistlist, &showhistlist);