Re: [BUG] SPACE jumps to tag in header line after hidden emphasis marker [9.7-pre (release_9.6.7-562-g5b6268 @ /home/jschmidt/work/org-mode/lisp/)]

[Jens Schmidt]

[Resent with correct identity to make this visible on the list as well - 
sorry for the hassle.]

On 2023-07-18  10:13, Ihor Radchenko wrote:

> Confirmed.

Thanks for caring about this so quickly ...

> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=64696

... and for the discussion with Eli & co.  Which I did not try to follow 
TBH.

> Fixed, on main.
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=3e3b873d3

Well, I have one not-so-minor nit here: With that commit you cannot 
insert text *before* some text having hidden emphasis without breaking 
the emphasis.  More concretely (in an empty org-mode buffer):

 t           ;; org-self-insert-command
 e           ;; org-self-insert-command
 s           ;; org-self-insert-command
 t           ;; org-self-insert-command
 SPC         ;; org-self-insert-command
 =           ;; org-self-insert-command
 t           ;; org-self-insert-command
 e           ;; org-self-insert-command
 s           ;; org-self-insert-command
 t           ;; org-self-insert-command
 =           ;; org-self-insert-command
 SPC         ;; org-self-insert-command
 t           ;; org-self-insert-command
 e           ;; org-self-insert-command
 s           ;; org-self-insert-command
 t           ;; org-self-insert-command
 C-<left>    ;; left-word
 C-<left>    ;; left-word
 SPC         ;; org-self-insert-command

The last SPC breaks the emphasis around the middle "test", which it did 
not previously.  Previously, the SPC would just move the whole 
emphasized word one space to the right.  Which I somehow got used to, 
and probably many others as well.

OTOH, to fix my bug, only the first of the new `org-rear-nonsticky-at' 
calls is actually needed.  So probably we could have something like the 
following to get my bug fixed without any changes in behavior (diff on 
top of main, that is, in addition to your commit):

diff --git a/lisp/org.el b/lisp/org.el
index 0d8b5386c..71f482f64 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -5153,8 +5153,7 @@ stacked delimiters is N.  Escaping delimiters is 
not possible."
                 ;; 
8b691a7f-6b62-d573-e5a8-80fac3dc9bc6@vodafonemail.de">https://orgmode.org/list/8b691a7f-6b62-d573-e5a8-80fac3dc9bc6@vodafonemail.de
                 (org-rear-nonsticky-at (match-beginning 5))
                (add-text-properties (match-beginning 3) (match-end 3)
-                                    '(invisible t))
-                (org-rear-nonsticky-at (match-end 3)))
+                                    '(invisible t)))
              (throw :exit t))))))))

 (defun org-emphasize (&optional char)