Remove (or double) redundant backslashes in string literals

See discussion at
https://lists.gnu.org/archive/html/emacs-devel/2020-01/msg00749.html .

* lisp/obsolete/iswitchb.el (iswitchb-summaries-to-end):
* test/src/regex-emacs-tests.el (regex-tests-BOOST-frob-escapes):
* test/lisp/help-fns-tests.el (help-fns-test-lisp-macro)
(help-fns-test-lisp-defun, help-fns-test-lisp-defsubst)
(help-fns-test-alias-to-defun, help-fns-test-bug23887):
Double backslashes for desired effect.
* lisp/org/ol.el (org-link-escape):
* lisp/net/nsm.el (nsm-protocol-check--rsa-kx)
(nsm-protocol-check--anon-kx, nsm-protocol-check--sha1-sig):
* lisp/obsolete/old-whitespace.el (whitespace-buffer):
* lisp/obsolete/rcompile.el (remote-compile-run-before):
* lisp/obsolete/vi.el (vi-end-of-blank-delimited-word):
* lisp/obsolete/vip.el (vip-current-major-mode)
(vip-paren-match, vip-switch-to-buffer)
(vip-switch-to-buffer-other-window, vip-kill-buffer)
(vip-get-ex-token, ex-edit):
* lisp/org/org-element.el (org-element--cache-sync-requests):
* lisp/org/org.el (org-sparse-tree):
* lisp/textmodes/reftex.el (reftex-report-bug):
* test/lisp/ibuffer-tests.el (ibuffer-save-filters):
* test/lisp/international/ucs-normalize-tests.el
(ucs-normalize-tests--insert-failing-lines):
* test/lisp/simple-tests.el (undo-test-kill-c-a-then-undo):
* test/lisp/textmodes/conf-mode-tests.el (conf-test-toml-mode):
* test/src/regex-emacs-tests.el (regex-tests-compare):
Remove redundant backslashes.

6 files changed, 11 insertions, 11 deletions

diff --git a/test/lisp/help-fns-tests.el b/test/lisp/help-fns-tests.el
index 4c808d8372e..ef42d4bda29 100644
--- a/test/lisp/help-fns-tests.el
+++ b/test/lisp/help-fns-tests.el
@@ -56,28 +56,28 @@ Return first line of the output of (describe-function-1 FUNC)."
     (should (string-match regexp result))))
 
 (ert-deftest help-fns-test-lisp-macro ()
-  (let ((regexp "a Lisp macro in .subr\.el")
+  (let ((regexp "a Lisp macro in .subr\\.el")
         (result (help-fns-tests--describe-function 'when)))
     (should (string-match regexp result))))
 
 (ert-deftest help-fns-test-lisp-defun ()
-  (let ((regexp "a compiled Lisp function in .subr\.el")
+  (let ((regexp "a compiled Lisp function in .subr\\.el")
         (result (help-fns-tests--describe-function 'last)))
     (should (string-match regexp result))))
 
 (ert-deftest help-fns-test-lisp-defsubst ()
-  (let ((regexp "a compiled Lisp function in .subr\.el")
+  (let ((regexp "a compiled Lisp function in .subr\\.el")
         (result (help-fns-tests--describe-function 'posn-window)))
     (should (string-match regexp result))))
 
 (ert-deftest help-fns-test-alias-to-defun ()
-  (let ((regexp "an alias for .set-file-modes. in .subr\.el")
+  (let ((regexp "an alias for .set-file-modes. in .subr\\.el")
         (result (help-fns-tests--describe-function 'chmod)))
     (should (string-match regexp result))))
 
 (ert-deftest help-fns-test-bug23887 ()
   "Test for https://debbugs.gnu.org/23887 ."
-  (let ((regexp "an alias for .re-search-forward. in .subr\.el")
+  (let ((regexp "an alias for .re-search-forward. in .subr\\.el")
         (result (help-fns-tests--describe-function 'search-forward-regexp)))
     (should (string-match regexp result))))
 
diff --git a/test/lisp/ibuffer-tests.el b/test/lisp/ibuffer-tests.el
index 8dadb920547..2211cae305b 100644
--- a/test/lisp/ibuffer-tests.el
+++ b/test/lisp/ibuffer-tests.el
@@ -82,7 +82,7 @@
         (test1 '((mode . org-mode)
                  (or (size-gt . 10000)
                      (and (not (starred-name))
-                          (directory . "\<org\>")))))
+                          (directory . "<org>")))))
         (test2 '((or (mode . emacs-lisp-mode) (file-extension . "elc?")
                      (and (starred-name) (name . "elisp"))
                      (mode . lisp-interaction-mode))))
diff --git a/test/lisp/international/ucs-normalize-tests.el b/test/lisp/international/ucs-normalize-tests.el
index 82ea2078f16..ec77e65271d 100644
--- a/test/lisp/international/ucs-normalize-tests.el
+++ b/test/lisp/international/ucs-normalize-tests.el
@@ -299,7 +299,7 @@ implementations:
   (list " var var))
   (dolist (linos (seq-partition newval 8))
     (insert (mapconcat #'number-to-string linos " ") "\n"))
-  (insert ")\)"))
+  (insert "))"))
 
 (defun ucs-normalize-check-failing-lines ()
   (interactive)
diff --git a/test/lisp/simple-tests.el b/test/lisp/simple-tests.el
index 276df795fca..ae201465678 100644
--- a/test/lisp/simple-tests.el
+++ b/test/lisp/simple-tests.el
@@ -427,7 +427,7 @@ See bug#35036."
   (with-temp-buffer
     (switch-to-buffer (current-buffer))
     (setq buffer-undo-list nil)
-    (insert "a\nb\n\c\n")
+    (insert "a\nb\nc\n")
     (goto-char (point-max))
     ;; We use a keyboard macro because it adds undo events in the same
     ;; way as if a user were involved.
diff --git a/test/lisp/textmodes/conf-mode-tests.el b/test/lisp/textmodes/conf-mode-tests.el
index 814cb06b960..7e870269959 100644
--- a/test/lisp/textmodes/conf-mode-tests.el
+++ b/test/lisp/textmodes/conf-mode-tests.el
@@ -162,7 +162,7 @@ image/tiff			tiff tif
 (ert-deftest conf-test-toml-mode ()
   ;; From `conf-toml-mode' docstring.
   (with-temp-buffer
-    (insert "\[entry]
+    (insert "[entry]
 value = \"some string\"")
     (goto-char (point-min))
     (conf-toml-mode)
diff --git a/test/src/regex-emacs-tests.el b/test/src/regex-emacs-tests.el
index 6a661afeff9..ad0271049c3 100644
--- a/test/src/regex-emacs-tests.el
+++ b/test/src/regex-emacs-tests.el
@@ -161,7 +161,7 @@ what failed, if anything; valid values are 'search-failed,
 'compilation-failed and nil.  I compare the beginning/end of each
 group with their expected values.  This is done with either
 BOUNDS-REF or SUBSTRING-REF; one of those should be non-nil.
-BOUNDS-REF is a sequence \[start-ref0 end-ref0 start-ref1
+BOUNDS-REF is a sequence [start-ref0 end-ref0 start-ref1
 end-ref1 ....] while SUBSTRING-REF is the expected substring
 obtained by indexing the input string by start/end-ref.
 
@@ -327,7 +327,7 @@ emacs requires an extra symbol character"
 (defun regex-tests-BOOST-frob-escapes (s ispattern)
   "Mangle \\ the way it is done in frob_escapes() in
 regex-tests-BOOST.c in glibc: \\t, \\n, \\r are interpreted;
-\\\\, \\^, \{, \\|, \} are unescaped for the string (not
+\\\\, \\^, \\{, \\|, \\} are unescaped for the string (not
 pattern)"
 
   ;; this is all similar to (regex-tests-unextend)