Invocation causes a warning about stray \ before " in grep

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Bug report

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• [x] show us the output of screenfetch -v

:: Finding current resolution(s)...found as '1920x1080' grep: warning: stray \ before " grep: warning: stray \ before " :: Finding desktop environment...found as 'Not Present'

The above warning is emitted with grep --version:

grep (GNU grep) 3.8

Presumably caused by this:

Regular expressions with stray backslashes now cause warnings, as their unspecified behavior can lead to unexpected results. For example, '\a' and 'a' are not always equivalent https://bugs.gnu.org/39678. Similarly, regular expressions or subexpressions that start with a repetition operator now also cause warnings due to their unspecified behavior; for example, *a(+b|{1}c) now has three reasons to warn. The warnings are intended as a transition aid; they are likely to be errors in future releases.

Seems that other people experience the behavior too.