Subject: 26.2; Clarify how does equal-including-properties compare text properties

From: Xu Chunyang <[email-masked]>
Date: Mon, 27 May 2019 13:05:14 +0800

Hi,

I expect the following returns t, however it doesn't

    (equal-including-properties
     #("a" 0 1 (face (:foreground "#bcc201")))
     #("a" 0 1 (face (:foreground "#bcc201"))))
    ;; => nil

it seems equal-including-properties uses `eq` to compare text properties
instead of `equal`, but the docstring doesn't mention this and the info
manual doesn't say this very clearly, maybe it's worth improving?