[RFC][PATCH 1/2] gdb: improve quit command with an alias called exit

[Enze Li <lienze2010@hotmail.com>]

This commit implements a request to add a quit command alias in
PR28406[1]. With this commit, we can now use the "exit" alias
to exit the GDB.

Tested on x86_64-linux.

[1] https://sourceware.org/bugzilla/show_bug.cgi?id=28406

---
 gdb/cli/cli-cmds.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c
index 2cf614c8e7e..832c9e56937 100644
--- a/gdb/cli/cli-cmds.c
+++ b/gdb/cli/cli-cmds.c
@@ -2377,7 +2377,7 @@ strict == evaluate script according to filename extension, error if not supporte
   cmd_list_element *quit_cmd
     = add_com ("quit", class_support, quit_command, _("\
 Exit gdb.\n\
-Usage: quit [EXPR]\n\
+Usage: quit [EXPR] or exit [EXPR]\n\
 The optional expression EXPR, if present, is evaluated and the result\n\
 used as GDB's exit code.  The default is zero."));
   cmd_list_element *help_cmd
@@ -2385,6 +2385,7 @@ used as GDB's exit code.  The default is zero."));
 	       _("Print list of commands."));
   set_cmd_completer (help_cmd, command_completer);
   add_com_alias ("q", quit_cmd, class_support, 1);
+  add_com_alias ("exit", quit_cmd, class_support, 1);
   add_com_alias ("h", help_cmd, class_support, 1);
 
   add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\
-- 
2.33.1