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[debbugs-tracker] bug#22983: closed (syntax-ppss returns wrong result.)


From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#22983: closed (syntax-ppss returns wrong result.)
Date: Sun, 01 Oct 2017 16:32:02 +0000

Your message dated 1 Oct 2017 16:31:03 -0000
with message-id <address@hidden>
and subject line Re: bug#22983: syntax-ppss returns wrong result.
has caused the debbugs.gnu.org bug report #22983,
regarding syntax-ppss returns wrong result.
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
22983: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22983
GNU Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: syntax-ppss returns wrong result. Date: Fri, 11 Mar 2016 15:15:12 +0000 User-agent: Mutt/1.5.24 (2015-08-30)
Hello, Emacs.

The fundamental contract in syntax-ppss is that (syntax-ppss POS)
returns the same value as (parse-partial-sexp (point-min) POS) (with the
exception of elements 2 and 6).  This is currently not always the case.

In the master branch, emacs -Q and visit xdisp.c with C-x C-f.  Follow
this recipe:

    M-: (syntax-ppss-flush-cache 1)
    M-: (setq ppss-0 (syntax-ppss 40000))
    M-<
    C-s #include " <CR>
    M->
    C-x n n
    M-: (setq ppss-1 (syntax-ppss 40000))
    M-: (setq parse (parse-partial-sexp (point-min) 40000))

At this point, `ppss-1' and `parse' should match (apart from elements 2
and 6).  What we actually have is:

    ppss-1: (2 39992 nil nil nil nil 2 nil nil (39975 39992))
    parse:  (0 nil 15674 34 nil nil 0 nil 15675 nil)

.

-- 
Alan Mackenzie (Nuremberg, Germany).



--- End Message ---
--- Begin Message --- Subject: Re: bug#22983: syntax-ppss returns wrong result. Date: 1 Oct 2017 16:31:03 -0000 User-agent: tin/2.4.1-20161224 ("Daill") (UNIX) (FreeBSD/11.0-RELEASE-p2 (amd64))
The bug has been fixed by patches to the emacs-26 branch.

-- 
Alan Mackenzie (Nuremberg, Germany).



--- End Message ---

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