bug#23740: 24.5; whitespace-report: mistakenly reports empty lines

bug#23740: 24.5; whitespace-report: mistakenly reports empty lines

[Pierre Neidhardt]

--text follows this line--

`whitespace-report' will mistakenly always report "empty lines at beginning and
end of buffer" as long as there is at least one empty line in the file.

`whitespace-cleanup' works properly however.

Running `emacs -Q`:

	1
	RET
	RET
	2
	M-x whitespace-report

This will make the issue apparent.


In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.20.6)
 of 2016-06-04 on juergen
Windowing system distributor `The X.Org Foundation', version 11.0.11803000
System Description:	Arch Linux

Configured using:
 `configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe
 -fstack-protector-strong' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
help-fns mail-prsvr mail-utils help-mode easymenu time-date tooltip
electric uniquify ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote make-network-process
dbusbind gfilenotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 16 72514 4769)
 (symbols 48 17869 0)
 (miscs 40 37 113)
 (strings 32 9538 4257)
 (string-bytes 1 256167)
 (vectors 16 9025)
 (vector-slots 8 386199 15246)
 (floats 8 63 82)
 (intervals 56 189 4)
 (buffers 960 12)
 (heap 1024 35192 1101))

-- 
Pierre Neidhardt

bug#23740: 24.5; whitespace-report: mistakenly reports empty lines

[Lars Ingebrigtsen]

Pierre Neidhardt <ambrevar@gmail.com> writes:

> --text follows this line--
>
> `whitespace-report' will mistakenly always report "empty lines at beginning and
> end of buffer" as long as there is at least one empty line in the file.
>
> `whitespace-cleanup' works properly however.
>
> Running `emacs -Q`:
>
> 	1
> 	RET
> 	RET
> 	2
> 	M-x whitespace-report
>
> This will make the issue apparent.

(I'm going through old Emacs bug reports that haven't received any
response.)

I get the following report in Emacs 27 in the test case, which says that
there's no empty spaces at the start or end of the buffer.  So I'm
guessing this has been fixed in the intervening years, and am closing
this bug report.  If you're still seeing this, please reopen.

 Whitespace Report

 Current Setting                       Whitespace Problem

 empty                    [X]     [ ]  empty lines at beginning of buffer
 empty                    [X]     [ ]  empty lines at end of buffer
 trailing                 [X]     [ ]  SPACEs or TABs at end of line
 indentation              [X]     [ ]  >= `tab-width' SPACEs at beginning of line
 indentation::tab         [ ]     [ ]  >= `tab-width' SPACEs at beginning of line
 indentation::space       [ ]     [ ]  TABs at beginning of line
 space-before-tab         [X]     [ ]  SPACEs before TAB
 space-before-tab::tab    [ ]     [ ]  SPACEs before TAB: SPACEs
 space-before-tab::space  [ ]     [ ]  SPACEs before TAB: TABs
 space-after-tab          [X]     [ ]  >= `tab-width' SPACEs after TAB
 space-after-tab::tab     [ ]     [ ]  >= `tab-width' SPACEs after TAB: SPACEs
 space-after-tab::space   [ ]     [ ]  >= `tab-width' SPACEs after TAB: TABs


-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no