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From:   Junio C Hamano <gitster@pobox.com>
To:     Shourya Shukla <shouryashukla.oo@gmail.com>
Cc:     git@vger.kernel.org, kaartic.sivaraam@gmail.com,
        christian.couder@gmail.com
Subject: Re: [GSoC] Shourya's Blog
References: <20200616072108.GA10273@konoha>
Date:   Wed, 17 Jun 2020 13:35:17 -0700
In-Reply-To: <20200616072108.GA10273@konoha> (Shourya Shukla's message of
        "Tue, 16 Jun 2020 12:51:08 +0530")
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Shourya Shukla <shouryashukla.oo@gmail.com> writes:

> Hello all!
>
> This is the sixth installation of my weekly blog covering what I have
> learned in GSoC and other like stuff.
> https://shouryashukla.blogspot.com/2020/06/gsoc-week-55.html
>
> Feel free to comment!

This like looked unusual:

    var1=${var1:=$var2}

What's inside ${...} is sufficient to assing to var1 when it is not
uset or set to an empty string.  It is far more common to say

    : ${var1:=$var2}

with or without the colon in front of the equal sign (which tells
the construct to treat "set to empty" the same way as "unset").