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[BUG] phantom newlines while moving headings [9.6-pre ( @ /home/chomwit


From: chomwitt
Subject: [BUG] phantom newlines while moving headings [9.6-pre ( @ /home/chomwitt/.config/emacs/elpa/org-9.6pre0.20221110.85807/)]
Date: Fri, 11 Nov 2022 00:16:04 +0000

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     https://orgmode.org/manual/Feedback.html#Feedback

Your bug report will be posted to the Org mailing list.
------------------------------------------------------------------------


It follows a possible org chunk that reproduce the phantom newlines that
are created while trying to move a headline from a state where there
are no newlines between the headers.
 



* Linux system programming
  
** What is a product  Standard  ?
  :posix:sus: <<lsb>> 


*** Unix characteristics

**** Portability

One 





*** Standard Makefile Targets

** Headers

How to find the include paths used by the gcc compiler ?

...

** Keyboard 

     A scancode is the lowest identification number for a key, 
   
evtest - Input device event monitor and query tool

*** Extra keyboard keys

Many
** Time
*** Check current time-date-timezone

n
** References/Example_code


*** TLPI book's code (The Linux Programming Interface)


**** DONE TOsDO Socket stream example
     CLOSED: [2017-01-11 Τετ 06:29]

Sockets

$ gcc -g -o us_xfr_cl us_xfr_cl.c  -L../lib -I../lib/
../lib/error_functions.o $ gcc -g -o us_xfr_sv  us_xfr_sv.c  -L../lib
-I../lib/ ../lib/error_functions.o


http://man7.org/tlpi/

** Utilities

*** strace 

strace traces and logs  all system calls issued by a program along with
their return codes. In this way, you can watch how a program interacts
with the system, which is useful for tracking down behavioural issues.
ss

strace -c foo_obj   // generate stats of syscalls

*** pmap 

$ foo &
[pid]
$ pmap pid



*** objdump

objdump is a program for displaying various information about object
files. For instance, it can be used as a disassembler to view an
executable in assembly form. It is part of the GNU Binutils for
fine-grained control over executables and other binary data.

$ objdump -f foo_obj   // see information related to the overall file
header , like file format

$ objdump -h foo_ob    // Dumping the section headers from the ELF
executable // If the ELF executable contains debug symbols will contain 
                       // section  with names beginning with .debug_ -
these are // ldthe DWARF debugging sections

26 .debug_aranges 00000020  00000000  00000000  00001037
                 CONTENTS, READONLY, DEBUGGING
27 .debug_pubnames 00000028  00000000  00000000  00001057
                 CONTENTS, READONLY, DEBUGGING
28 .debug_info   000000cc  00000000  00000000  0000107f
                 CONTENTS, READONLY, DEBUGGING
29 .debug_abbrev 0000008a  00000000  00000000  0000114b
                 CONTENTS, READONLY, DEBUGGING
30 .debug_line   0000006b  00000000  00000000  000011d5
                 CONTENTS, READONLY, DEBUGGING
31 .debug_frame  00000044  00000000  00000000  00001240
                 CONTENTS, READONLY, DEBUGGING
32 .debug_str    000000ae  00000000  00000000  00001284
                 CONTENTS, READONLY, DEBUGGING
33 .debug_loc    00000058  00000000  00000000  00001332
                 CONTENTS, READONLY, DEBUGGING

The first number seen for each section here is its size, and the last
is the offset where it begins in the ELF file. The debugger uses this
information to read the section from the executable


$ objdump --dwarf=info foo_obj   // display the DWARF debug_info section
//This is why DWARF encodes a full mapping between lines in the C
source code //and machine code addresses in the executable. This
information is contained in //the .debug_line section and can be
extracted in a readable form as follows:


$ objdump --dwarf=decodedline  foo_obj   // display 

http://eli.thegreenplace.net/2011/02/07/how-debuggers-work-part-3-debugging-information/


Emacs  : GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.24, cairo version 1.16.0) of 2021-03-28, modified by Debian
Package: Org mode version 9.6-pre ( @
/home/chomwitt/.config/emacs/elpa/org-9.6pre0.20221110.85807/)

current state:
==============
(setq
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
org-src-mode-configure-edit-buffer) org-link-shell-confirm-function
'yes-or-no-p org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-persist-before-write-hook
'(org-element--cache-persist-before-write) org-mode-hook '(#[0
"\300\301\302\303\304$\207" [add-hook change-major-mode-hook
org-fold-show-all append local] 5] #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook
org-babel-show-result-all append local] 5] org-babel-result-hide-spec
org-babel-hide-all-hashes) org-archive-hook
'(org-attach-archive-delete-maybe) org-persist-before-read-hook
'(org-element--cache-persist-before-read)
org-confirm-elisp-link-function 'yes-or-no-p
org-startup-with-inline-images t org-agenda-before-write-hook
'(org-agenda-add-entry-text) org-metaup-hook
'(org-babel-load-in-session-maybe) org-persist-after-read-hook
'(org-element--cache-persist-after-read)
org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3
"\n\n(fn ENTRY)"] org-babel-pre-tangle-hook '(save-buffer)
org-tab-first-hook '(org-babel-hide-result-toggle-maybe
org-babel-header-arg-expand) org-cycle-tab-first-hook
'(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand)
org-agenda-loop-over-headlines-in-active-region nil
org-fold-core-isearch-open-function 'org-fold--isearch-reveal
org-occur-hook '(org-first-headline-recenter) org-cycle-hook
'(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines
org-cycle-optimize-window-after-visibility-change
org-cycle-display-inline-images) org-speed-command-hook
'(org-speed-command-activate org-babel-speed-command-activate)
org-export-before-parsing-hook '(org-attach-expand-links)
org-confirm-shell-link-function 'yes-or-no-p org-link-parameters
'(("attachment" :follow org-attach-follow :complete
org-attach-complete-link) ("id" :follow org-id-open) ("eww" :follow
org-eww-open :store org-eww-store-link) ("rmail" :follow org-rmail-open
:store org-rmail-store-link) ("mhe" :follow org-mhe-open :store
org-mhe-store-link) ("irc" :follow org-irc-visit :store
org-irc-store-link :export org-irc-export) ("info" :follow
org-info-open :export org-info-export :store org-info-store-link
:insert-description org-info-description-as-command) ("gnus" :follow
org-gnus-open :store org-gnus-store-link) ("docview" :follow
org-docview-open :export org-docview-export :store
org-docview-store-link) ("bibtex" :follow org-bibtex-open :store
org-bibtex-store-link) ("bbdb" :follow org-bbdb-open :export
org-bbdb-export :complete org-bbdb-complete-link :store
org-bbdb-store-link) ("w3m" :store org-w3m-store-link) ("doi" :follow
org-link-doi-open :export org-link-doi-export) ("file+sys")
("file+emacs") ("shell" :follow org-link--open-shell) ("news" :follow
#[514 "\301\300\302Q\"\207" ["news" browse-url ":"] 6 "\n\n(fn URL
ARG)"]) ("mailto" :follow #[514 "\301\300\302Q\"\207" ["mailto"
browse-url ":"] 6 "\n\n(fn URL ARG)"]) ("https" :follow #[514
"\301\300\302Q\"\207" ["https" browse-url ":"] 6 "\n\n(fn URL ARG)"])
("http" :follow #[514 "\301\300\302Q\"\207" ["http" browse-url ":"] 6
"\n\n(fn URL ARG)"]) ("ftp" :follow
                        #[514 "\301\300\302Q\"\207" ["ftp" browse-url
":"] 6 "\n\n(fn URL ARG)"]) ("help" :follow org-link--open-help :store
org-link--store-help) ("file" :complete org-link-complete-file)
("elisp" :follow org-link--open-elisp)) org-link-elisp-confirm-function
'yes-or-no-p )



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