Subject: 24.3.50; modified syntax table leads to error: "Point before start of properties"

From: Noam Postavsky <[email-masked]>
Date: Sun, 5 Jun 2016 09:35:32 -0400

Nicolas Richard <theonewiththeevillook <at> yahoo.fr> wrote:
> I unfortunately can't repro without using AUCTeX.

The following works to repro with builtin latex-mode:

emacs -Q -l tex-mode --eval '(modify-syntax-entry ?\\ "  p"
latex-mode-syntax-table)' --eval '(progn (insert "\\foo") (goto-char
2) (latex-mode))'
M-: (backward-prefix-chars)