bug#48317: 27.1; text-property-search-forward moves point to end when not found

[Howard Melman <hmelman@gmail.com>]

The documentation of function text-property-search-forward says:

    If not found, return nil and don’t move point.

Yet I find it moves point to eob.

To reproduce in emacs -Q, with point at beginning of *scratch* buffer with
text in it, eval:

(require 'text-property-search)
(text-property-search-forward 'facet 'foo)

point is moved to end of buffer.

I can reporoduce this in GNUS Emacs 27.1 and the macport of 27.2.

Howard

In GNU Emacs 27.1 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95))
 of 2020-08-12 built on builder10-14.porkrind.org
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.7

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Entering debugger...
Back to top level
Entering debugger...
Back to top level
Type C-x 1 to delete the help window, C-M-v to scroll help.
#s(prop-match 54 201 nil)
Mark activated
read--expression: Command attempted to use minibuffer while in minibuffer
Quit
Quit
Configured using:
 'configure --with-ns '--enable-locallisppath=/Library/Application
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Configured features:
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THREADS JSON PDUMPER

Important settings:
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  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

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  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
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Memory information:
((conses 16 58535 6154)
 (symbols 48 6797 1)
 (strings 32 20507 1782)
 (string-bytes 1 622865)
 (vectors 16 11726)
 (vector-slots 8 142380 15728)
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