From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <simonsobisch@gnu.org>
Received: from eggs.gnu.org (eggs.gnu.org [IPv6:2001:470:142:3::10])
 by sourceware.org (Postfix) with ESMTPS id 412CE3858D39
 for <gdb-patches@sourceware.org>; Wed,  3 Nov 2021 22:09:16 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 412CE3858D39
Received: from fencepost.gnu.org ([2001:470:142:3::e]:43920)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <simonsobisch@gnu.org>)
 id 1miORW-0006Bx-5s
 for gdb-patches@sourceware.org; Wed, 03 Nov 2021 18:09:15 -0400
Received: from ip5f5a8d68.dynamic.kabel-deutschland.de ([95.90.141.104]:61952
 helo=[192.168.111.41])
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)
 (Exim 4.90_1) (envelope-from <simonsobisch@gnu.org>)
 id 1miORV-0000AO-U4
 for gdb-patches@sourceware.org; Wed, 03 Nov 2021 18:09:14 -0400
From: Simon Sobisch <simonsobisch@gnu.org>
To: gdb-patches@sourceware.org
Subject: source search with correct return type for "Expression not found"
Message-ID: <39e16d91-3de3-2558-9afc-9d777eef7edc@gnu.org>
Date: Wed, 3 Nov 2021 23:09:11 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.14.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 8bit
X-Spam-Status: No, score=1.8 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH,
 DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF,
 RCVD_IN_BARRACUDACENTRAL, SPF_HELO_PASS, SPF_PASS,
 TXREP autolearn=no autolearn_force=no version=3.4.4
X-Spam-Level: *
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on
 server2.sourceware.org
X-BeenThere: gdb-patches@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb-patches mailing list <gdb-patches.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/gdb-patches>,
 <mailto:gdb-patches-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/gdb-patches>,
 <mailto:gdb-patches-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Wed, 03 Nov 2021 22:09:17 -0000

Currently the user only gets output of this message, but not error.
The later is especially different handled in GDB frontends and with mi

gdb/source.c, line 1709:

-  printf_filtered (_("Expression not found\n"));
+  error (_("Expression not found"));

Nice side effect: one msgid less, because on line 1649 it is actually 
used that way.