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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Why do I find ^L in elisp code?
Date: Sun, 23 May 2021 09:42:30 +0300
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In-Reply-To: <YKlorvvwLWYLtyZt@protected.localdomain> (message from Jean Louis
 on Sat, 22 May 2021 23:25:18 +0300)
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> Date: Sat, 22 May 2021 23:25:18 +0300
> From: Jean Louis <bugs@gnu.support>
> 
> 𝓑𝓮𝓬𝓪𝓾𝓼𝓮 𝔂𝓸𝓾 𝓵𝓪𝓬𝓴 𝓰𝓸𝓸𝓭 𝓾𝓷𝓲𝓬𝓸𝓭𝓮 𝓯𝓸𝓷𝓽𝓼.

The characters you used above are not for human-readable text, they
are for mathematical formulas.  So it has nothing to do with fonts,
you simply use these characters incorrectly.