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From: =?utf-8?Q?Mattias_Engdeg=C3=A5rd?= <mattiase@acm.org>
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Subject: Errors indicated by ineffective backslashes in string literals
Date: Sat, 16 Mar 2019 19:09:18 +0100
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--Apple-Mail=_59B3FA01-266B-4128-97F3-836A2B807328
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	charset=us-ascii

Sorry to bother you again, but while trying to get a better =
understanding of regexp usage and errors I found several ineffective =
backslashes in string literals (like "\.") and decided to do something =
about them.

Some were just superfluous and confusing, but others were apparent =
errors. Here is the resulting patch.


--Apple-Mail=_59B3FA01-266B-4128-97F3-836A2B807328
Content-Disposition: attachment;
	filename=0001-Fix-some-ineffective-backslashes-in-string-literals.patch
Content-Type: application/octet-stream;
	x-unix-mode=0644;
	name="0001-Fix-some-ineffective-backslashes-in-string-literals.patch"
Content-Transfer-Encoding: quoted-printable

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<mattiase@acm.org>=0ADate:=20Sat,=2016=20Mar=202019=2018:19:23=20+0100=0A=
Subject:=20[PATCH]=20Fix=20some=20ineffective=20backslashes=20in=20=
string=20literals=0A=0ADeal=20with=20lone=20backslashes=20that=20have=20=
no=20effect=20in=20string=20literals,=0Abut=20indicate=20that=20=
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(auth-source-pass-entries):=0A*=20lisp/textmodes/artist.el=20=
(artist-figlet-get-font-list-windows):=0A*=20lisp/org/ob-abc.el=20=
(org-babel-expand-body:abc,=20org-babel-execute:abc):=0A*=20=
lisp/org/ob-forth.el=20(org-babel-forth-session-execute):=0A*=20=
lisp/vc/vc-git.el=20(vc-git--program-version):=0AAdd=20backslash=20in=20=
regexp=20for=20correctness.=0A=0A*=20lisp/gnus/nnmail.el=20=
(nnmail-split-abbrev-alist):=0AReplace=20`\||'=20with=20`\\|'=20to=20=
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lisp/progmodes/cc-engine.el=20(c-forward-decl-or-cast-1,=20=
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(f90-font-lock-keywords-2):=0A*=20lisp/progmodes/etags.el=20=
(etags-tags-completion-table):=0A*=20lisp/progmodes/ruby-mode.el=20=
(ruby-syntax-propertize):=0A*=20test/lisp/emacs-lisp/cl-print-tests.el=20=
(cl-print-tests-1):=0ARemove=20superfluous=20backslashes=20from=20=
regexp.=0A=0A*=20test/lisp/emacs-lisp/rx-tests.el=20(rx-char-any):=0A=
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lisp/auth-source-pass.el=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=20=
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=20=20=20=20=20=20|=202=20+-=0A=20lisp/org/ob-abc.el=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=204=20++--=0A=20=
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=20|=202=20+-=0A=20lisp/org/org-list.el=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20|=202=20+-=0A=20lisp/progmodes/cc-engine.el=20=20=20=
=20=20=20=20=20=20=20=20=20|=206=20+++---=0A=20lisp/progmodes/etags.el=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=202=20+-=0A=20=
lisp/progmodes/f90.el=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
|=202=20+-=0A=20lisp/progmodes/ruby-mode.el=20=20=20=20=20=20=20=20=20=20=
=20=20|=202=20+-=0A=20lisp/textmodes/artist.el=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20|=202=20+-=0A=20lisp/vc/vc-git.el=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20|=202=20+-=0A=20=
test/lisp/emacs-lisp/cl-print-tests.el=20|=202=20+-=0A=20=
test/lisp/emacs-lisp/rx-tests.el=20=20=20=20=20=20=20|=202=20+-=0A=2013=20=
files=20changed,=2016=20insertions(+),=2016=20deletions(-)=0A=0Adiff=20=
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e37cadb07c..deb805a6e1=20100644=0A---=20a/lisp/auth-source-pass.el=0A+++=20=
b/lisp/auth-source-pass.el=0A@@=20-189,7=20+189,7=20@@=20often."=0A=20=20=
=20(let=20((store-dir=20(expand-file-name=20"~/.password-store/")))=0A=20=
=20=20=20=20(mapcar=0A=20=20=20=20=20=20(lambda=20(file)=20=
(file-name-sans-extension=20(file-relative-name=20file=20store-dir)))=0A=
-=20=20=20=20=20(directory-files-recursively=20store-dir=20"\.gpg$"))))=0A=
+=20=20=20=20=20(directory-files-recursively=20store-dir=20"\\.gpg$"))))=0A=
=20=0A=20(defun=20auth-source-pass--find-all-by-entry-name=20(entryname=20=
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a/lisp/gnus/nnmail.el=20b/lisp/gnus/nnmail.el=0Aindex=20=
f6d7525293..a95cdb4a4f=20100644=0A---=20a/lisp/gnus/nnmail.el=0A+++=20=
b/lisp/gnus/nnmail.el=0A@@=20-489,7=20+489,7=20@@=20Example:=0A=20=20=20=20=
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=20=20(list=20.=20=
"list-id\\|list-post\\|x-mailing-list\||x-beenthere\\|x-loop"))=0A+=20=20=
=20=20(list=20.=20=
"list-id\\|list-post\\|x-mailing-list\\|x-beenthere\\|x-loop"))=0A=20=20=20=
"Alist=20of=20abbreviations=20allowed=20in=20`nnmail-split-fancy'."=0A=20=
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:format=20"%v"=20symbol=20regexp)))=0Adiff=20--git=20=
a/lisp/org/ob-abc.el=20b/lisp/org/ob-abc.el=0Aindex=20=
cefbe716e1..43ee1d9921=20100644=0A---=20a/lisp/org/ob-abc.el=0A+++=20=
b/lisp/org/ob-abc.el=0A@@=20-47,7=20+47,7=20@@=0A=20=09=20=20=20=20=20=
(value=20(cdr=20pair)))=0A=20=09=20(setq=20body=0A=20=09=20=20=20=20=20=20=
=20(replace-regexp-in-string=0A-=09=09(concat=20"\$"=20(regexp-quote=20=
name))=0A+=09=09(concat=20"\\$"=20(regexp-quote=20name))=0A=20=09=09(if=20=
(stringp=20value)=20value=20(format=20"%S"=20value))=0A=20=09=09body))))=0A=
=20=20=20=20=20=20vars)=0A@@=20-59,7=20+59,7=20@@=0A=20=20=20(message=20=
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(cdr=20(assq=20:cmdline=20params)))=0A=20=09=20(out-file=20(let=20((file=20=
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(replace-regexp-in-string=20"\.pdf$"=20".ps"=20file)=0A+=09=09=20=20=20=20=
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"=20"=20cmdline=0Adiff=20--git=20a/lisp/org/ob-forth.el=20=
b/lisp/org/ob-forth.el=0Aindex=208ca292656a..88ed964fd7=20100644=0A---=20=
a/lisp/org/ob-forth.el=0A+++=20b/lisp/org/ob-forth.el=0A@@=20-53,7=20=
+53,7=20@@=20This=20function=20is=20called=20by=20=
`org-babel-execute-src-block'"=0A=20(defun=20=
org-babel-forth-session-execute=20(body=20params)=0A=20=20=20(require=20=
'forth-mode)=0A=20=20=20(let=20((proc=20(forth-proc))=0A-=09(rx=20"=20=
\\(\n:\\|compiled\n\\\|ok\n\\)")=0A+=09(rx=20"=20=
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(with-current-buffer=20(process-buffer=20(forth-proc))=0A=20=20=20=20=20=20=
=20(mapcar=20(lambda=20(line)=0Adiff=20--git=20a/lisp/org/org-list.el=20=
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org-plain-list-ordered-item-terminator=20t=0A=20=20=20"The=20character=20=
that=20makes=20a=20line=20with=20leading=20number=20an=20ordered=20list=20=
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terminators,=20use=20t.=0A+Valid=20values=20are=20?.=20and=20?\\).=20=20=
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needs=20to=20be=20set=20before=20org.el=20is=20loaded.=20=20If=20you=0A=20=
need=20to=20make=20a=20change=20while=20Emacs=20is=20running,=20use=20=
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b/lisp/progmodes/cc-engine.el=0Aindex=20fd66928099..cc3753a7eb=20100644=0A=
---=20a/lisp/progmodes/cc-engine.el=0A+++=20=
b/lisp/progmodes/cc-engine.el=0A@@=20-8968,7=20+8968,7=20@@=20This=20=
function=20might=20do=20hidden=20buffer=20changes."=0A=20=0A=20=09=20=
(setq=20at-decl-end=0A=20=09=20=20=20=20=20=20=20(looking-at=20(cond=20=
((eq=20context=20'<>)=20"[,>]")=0A-=09=09=09=09=20((not=20(memq=20=
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characteristics=20of=0A@@=20-10321,7=20+10321,7=20@@=20comment=20at=20=
the=20start=20of=20cc-engine.el=20for=20more=20info."=0A=20=09=09=09=20=20=
;;=20Check=20for=20`c-opt-block-decls-with-vars-key'=0A=20=09=09=09=20=20=
;;=20before=20the=20first=20paren.=0A=20=09=09=09=20=20=
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=20=09=09=09=20=20;;=20the=20block.=0A-=09=09=09=20=20=
(c-syntactic-re-search-forward=20"[;=3D\(\[{]"=0A+=09=09=09=20=20=
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=09=20=20=20=20;;=20The=20declaration=20doesn't=20have=20any=20of=20the=0A=
diff=20--git=20a/lisp/progmodes/etags.el=20b/lisp/progmodes/etags.el=0A=
index=20c2715be537..910c320ab8=20100644=0A---=20=
a/lisp/progmodes/etags.el=0A+++=20b/lisp/progmodes/etags.el=0A@@=20=
-1281,7=20+1281,7=20@@=20buffer-local=20values=20of=20tags=20table=20=
format=20variables."=0A=20=20=20=20=20=20=20;;=20This=20regexp=20matches=20=
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b/lisp/progmodes/f90.el=0A@@=20-648,7=20+648,7=20@@=20=
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=20logical\\|double[=20\t]*precision\\|type[=20=
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