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bug#23081: emacs-auctex: fill-paragraph always sets the modified flag

From: Jaakov
Subject: bug#23081: emacs-auctex: fill-paragraph always sets the modified flag
Date: Tue, 22 Mar 2016 13:41:08 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.7.0

By the way, is auctex reimplementing fill-paragraph in some way? If so, auctex could do better in latex-mode than emacs itself on text mode...

On 21.03.2016 22:32, David Kastrup wrote:
Jaakov <address@hidden> writes:

Dear maintainer:

Here is the bug:

1) Create a tex file with some long multi-line text, e.g.,

% This buffer is for notes you don't want to save, and for
% Lisp evaluation.  If you want to create a file, visit that file with
% C-x C-f, then enter the text in that file's own buffer.

2) Open this file in Emacs.

3) Put the cursor into the text and press Alt-Q to adjust it to your
column width. If there are less than two lines, add more text and
press Alt-Q; repeat until you finally get at least two lines after

4) a) Save the file.
    b) Observe that the buffer is indicated as stored.

5) a) Press Alt-Q again.
    b) Observe that the buffer contents did not change but the buffer
is indicated as modified by the stars in the left lower corner.

This is contrary to the modified flag behavior as stated in

This is the same in Emacs' *scratch* buffer as of

GNU Emacs (i686-pc-linux-gnu, GTK+ Version 3.18.7) of 2016-02-24

so it's not particular to AUCTeX.

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