GNU bug report logs - #68767
eshell's history expansion doesn't support !$

Message received at submit <at> debbugs.gnu.org:

Received: (at submit) by debbugs.gnu.org; 28 Jan 2024 02:47:55 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Sat Jan 27 21:47:55 2024
Received: from localhost ([127.0.0.1]:56227 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1rTvD9-0005vF-Gb
	for submit <at> debbugs.gnu.org; Sat, 27 Jan 2024 21:47:55 -0500
Received: from lists.gnu.org ([2001:470:142::17]:57864)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <dancol@HIDDEN>) id 1rTvD5-0005uL-SI
 for submit <at> debbugs.gnu.org; Sat, 27 Jan 2024 21:47:54 -0500
Received: from eggs.gnu.org ([2001:470:142:3::10])
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <dancol@HIDDEN>) id 1rTvCs-0006ZT-I7
 for bug-gnu-emacs@HIDDEN; Sat, 27 Jan 2024 21:47:38 -0500
Received: from dancol.org ([2600:3c01:e000:3d8::1])
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <dancol@HIDDEN>) id 1rTvCq-0001fn-Di
 for bug-gnu-emacs@HIDDEN; Sat, 27 Jan 2024 21:47:38 -0500
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=dancol.org; 
 s=x;
 h=Content-Type:MIME-Version:Message-ID:Date:Subject:To:From:Sender:
 Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description:
 Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:
 In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:
 List-Post:List-Owner:List-Archive;
 bh=3dQTr6o0Qqg+9JhtDE3bT56rQQtGho8Eh2F0afVTxkM=; b=IRRvy1eTL6DLaRhFIz2p1XEx2H
 v3d5UivXoHXHQd4zevSMRyUAqoFLXz7mFVX4XZqY9YUxYdrL4wlXfpp4J3hbZ7wZARbIk0CcaX5Vf
 msjdkcH+ymlv8bywPjWTWQp4O0zikbj1Fy5PTdIjyiF8oXYMSAJ1z0yhAXhz3ZeFFFKsSSoNn96KJ
 ksuJ/iJd9BUQB1IImizCQ4FeoKkhCNgVFmtVYrfQ61PcA8PPn1bJJH13GqdWzcs5EQrqEV1K8WTGT
 vzZeJR9Moa8OSs0z66Bsfig8Al6st/EtinIh802+xJoLlFIUQvuKiNaSMEke6imr4c17Cq+vyre6s
 Si/eis3g==;
Received: from [2600:1012:b0c1:92a3:e7c4:8eb3:dc1c:837f] (port=55122
 helo=localhost)
 by dancol.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 (Exim 4.94.2) (envelope-from <dancol@HIDDEN>) id 1rTvCk-00023k-IU
 for bug-gnu-emacs@HIDDEN; Sat, 27 Jan 2024 21:47:31 -0500
From: Daniel Colascione <dancol@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: eshell's history expansion doesn't support !$
User-Agent: mu4e 1.11.27; emacs 30.0.50
Date: Sat, 27 Jan 2024 18:47:28 -0800
Message-ID: <87zfwqi37j.fsf@HIDDEN>
MIME-Version: 1.0
Content-Type: text/plain
Received-SPF: pass client-ip=2600:3c01:e000:3d8::1;
 envelope-from=dancol@HIDDEN; helo=dancol.org
X-Spam_score_int: -20
X-Spam_score: -2.1
X-Spam_bar: --
X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,
 DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001,
 SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no
X-Spam_action: no action
X-Spam-Score: 0.9 (/)
X-Debbugs-Envelope-To: submit
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -0.1 (/)

In bash, !$ expands to the last word of the previous command. eshell
doesn't recognize this syntax, even though it should if it's imitating
bash's history expansion

Also, in general, eshell should support the entirety of bash's history
expansion vocabulary, e.g. !$:h.