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Sat, 04 Sep 2021 17:26:59 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Zach Riggle Date: Sat, 4 Sep 2021 19:26:48 -0500 Message-ID: Subject: Re: Accessing the evaluated expression which caused an error To: Bart Schaefer Cc: Zsh Users Content-Type: multipart/alternative; boundary="000000000000360b4605cb3497ce" X-Seq: 27085 Archived-At: X-Loop: zsh-users@zsh.org Errors-To: zsh-users-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-users-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: --000000000000360b4605cb3497ce Content-Type: text/plain; charset="UTF-8" Will the (e) actually evaluate the parameters and execute them again? Or just a single layer of expansion? On Sat, Sep 4, 2021 at 3:08 PM Bart Schaefer wrote: > On Fri, Sep 3, 2021 at 10:38 AM Zach Riggle wrote: > > > > > What exactly might you want captured? > > > > Very frequently I build a create an array that contains a command [...] > > And invoke it like: > > > > "${cmd[@]}" > > Given that you're doing it that way (rather than say "eval" it), you > should be able to use TRAPDEBUG and just do this: > > TRAPDEBUG() { ACTUAL_CMD=${(e)ZSH_DEBUG_CMD} } > > You may want some other "protection" around that, such as only doing > it when ZSH_DEBUG_CMD matches a pattern. > -- *Zach Riggle* --000000000000360b4605cb3497ce Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Will the (e) actually evaluate the parameters and execute= them again? Or just a single layer of expansion?

On Sat, Sep 4, 2021 = at 3:08 PM Bart Schaefer <s= chaefer@brasslantern.com> wrote:
On Fri, Sep 3, 2021 at 10:38 AM Zach Riggle <zachriggle@gmail.com> wrote:
>
> > What exactly might you want captured?
>
> Very frequently I build a create an array that contains a command [...= ]
> And invoke it like:
>
>=C2=A0 =C2=A0 =C2=A0"${cmd[@]}"

Given that you're doing it that way (rather than say "eval" i= t), you
should be able to use TRAPDEBUG and just do this:

TRAPDEBUG() { ACTUAL_CMD=3D${(e)ZSH_DEBUG_CMD} }

You may want some other "protection" around that, such as only do= ing
it when ZSH_DEBUG_CMD matches a pattern.
--

Zach Riggle
--000000000000360b4605cb3497ce--