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Date: Wed, 13 Jul 2016 14:37:13 -0700
From: Richo Healey <richo@psych0tik.net>
To: zsh-users@zsh.org
Subject: Re: profile prompt rendering time
Message-ID: <20160713213713.GB75349@xenia>
References: <CAEwkUWO7yrxptZChw7Q3F=u=0+Uwf+Frmzo24py3xvrK1=cTtA@mail.gmail.com>
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User-Agent: Mutt/1.6.1 (2016-04-27)

On 13/07/16 11:17 -0300, Filipe Silva wrote:
>Hi,
>
>short version: How can I profile each rendering of a zsh prompt?
>
>long version: I've recently came across a plugin (rupa/z) that, when
>installed, hit my zsh prompt rendering time by a noticeable amount.
>
>When I say prompt rendering time, I'm not refering to amount of time that
>it takes for the first zsh prompt to appear when I issue, for an example,
>`exec zsh` (that is achieve by issuing `time zsh -i -c "print -n"`).
>
>I'm talking about the time that it takes for zsh to give me another prompt
>once that it is fully loaded. In other words, I want to achieve this:
>
>~ $ ls (when i hit enter, start counting)
>code/ notes/ file.txt
>~ $ (stop counting when this prompt appears. show me elapsed time)
>
>Is that a way to do that?
>
>thanks in advance,
>
>Filipe Silva

You could do something fairly janky and just wrap your whole prompt in a
function that emits the prompt, and time(1)'s itself.