[PATCH 2/2] less: replace most uses of NORMAL escape with UNHIGHLIGHT

[Kang-Che Sung]

On Friday, April 15, 2022, FriendlyNeighborhoodShane <
shane.880088.supw at gmail.com> wrote:
> Fixes conflict when -R's color escape codes are mixed together with
> highlights. Better complement to HIGHLIGHT.

What's the difference between the NORMAL escape and the UNHIGHLIGHT escape?
Is there a test case to demonstrate the difference?
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