Fix regular-expression glitches and typos

Problems reported by Mattias Engdegård in:
https://lists.gnu.org/r/emacs-devel/2019-03/msg00085.html
* admin/admin.el (set-version):
* lisp/allout.el (allout-latexify-one-item):
* lisp/arc-mode.el (archive-arc-rename-entry)
(archive-rar-summarize):
* lisp/calc/calc-graph.el (calc-graph-set-styles)
(calc-graph-hide):
* lisp/calc/calc-help.el (calc-describe-key):
* lisp/calc/calc-lang.el (math-compose-tex-func, eqn):
* lisp/calc/calc.el (calcDigit-key):
* lisp/cedet/ede/makefile-edit.el (makefile-macro-file-list):
* lisp/cedet/ede/speedbar.el (ede-tag-expand):
* lisp/cedet/semantic/sb.el (semantic-sb-show-extra)
(semantic-sb-expand-group):
* lisp/comint.el (comint-substitute-in-file-name):
* lisp/dired.el (dired-actual-switches):
* lisp/emacs-lisp/chart.el (chart-rmail-from):
* lisp/emacs-lisp/eieio-opt.el (eieio-sb-expand):
* lisp/emacs-lisp/eieio-speedbar.el (eieio-speedbar-object-expand):
* lisp/emacs-lisp/rx.el (rx-not, rx-atomic-p):
* lisp/emulation/viper-ex.el (viper-get-ex-token)
(viper-get-ex-pat, ex-set-read-variable):
* lisp/epg.el (epg--status-SIG_CREATED):
* lisp/erc/erc-speedbar.el (erc-speedbar-expand-user):
(erc-speedbar-expand-channel, erc-speedbar-expand-server)
* lisp/erc/erc.el (erc-is-message-ctcp-and-not-action-p)
(erc-banlist-update):
* lisp/eshell/em-dirs.el (eshell-parse-drive-letter, eshell/pwd):
* lisp/find-dired.el (find-dired):
* lisp/frame.el (frame-set-background-mode):
* lisp/generic-x.el (apache-log-generic-mode):
* lisp/gnus/gnus-art.el (gnus-button-valid-localpart-regexp):
* lisp/gnus/gnus.el (gnus-short-group-name):
* lisp/gnus/message.el (message-mailer-swallows-blank-line):
* lisp/ibuffer.el (ibuffer-fontification-alist):
* lisp/ido.el (ido-set-matches-1):
* lisp/info-xref.el (info-xref-lock-file-p):
* lisp/info.el (Info-dir-remove-duplicates)
(Info-unescape-quotes, Info-split-parameter-string)
(Info-speedbar-expand-node):
* lisp/international/mule.el (sgml-html-meta-auto-coding-function):
* lisp/isearch.el (isearch-pre-command-hook):
* lisp/language/ethio-util.el (ethio-fidel-to-tex-buffer):
* lisp/mail/rmail.el (rmail-collect-deleted):
* lisp/mh-e/mh-alias.el (mh-alias-suggest-alias):
* lisp/mh-e/mh-comp.el (mh-forward):
* lisp/mh-e/mh-search.el (mh-index-next-folder)
(mh-index-create-imenu-index):
* lisp/mh-e/mh-xface.el (mh-picon-get-image):
* lisp/minibuffer.el (completion--embedded-envvar-re):
* lisp/net/ange-ftp.el (ange-ftp-ls-parser):
* lisp/net/goto-addr.el (goto-address-mail-regexp)
(goto-address-find-address-at-point):
* lisp/net/pop3.el (pop3-read-response, pop3-user)
(pop3-pass, pop3-apop):
* lisp/net/tramp.el (tramp-ipv6-regexp)
(tramp-replace-environment-variables):
* lisp/nxml/nxml-maint.el (nxml-insert-target-repertoire-glyph-set):
* lisp/nxml/rng-uri.el (rng-uri-escape-multibyte):
* lisp/nxml/rng-xsd.el (rng-xsd-convert-any-uri):
* lisp/obsolete/pgg.el (pgg-fetch-key):
* lisp/obsolete/vip.el (vip-get-ex-token):
* lisp/org/ob-core.el (org-babel-string-read):
* lisp/org/org-agenda.el:
(org-agenda-add-entry-to-org-agenda-diary-file):
* lisp/org/org-element.el (org-element-keyword-parser):
* lisp/org/org-list.el (org-list-indent-item-generic):
* lisp/org/org-mhe.el (org-mhe-get-message-folder-from-index):
* lisp/org/org-mobile.el (org-mobile-apply):
* lisp/org/org-mouse.el (org-mouse-context-menu):
* lisp/org/org-plot.el (org-plot/gnuplot):
* lisp/org/org-protocol.el (org-protocol-flatten-greedy):
* lisp/org/org-table.el (org-table-copy-down)
(org-table-formula-make-cmp-string)
(org-table-get-stored-formulas, org-table-recalculate)
(org-table-edit-formulas):
* lisp/org/org.el (org-translate-link-from-planner)
(org-fill-line-break-nobreak-p):
* lisp/org/ox-ascii.el (org-ascii-item):
* lisp/org/ox-latex.el (org-latex-clean-invalid-line-breaks):
* lisp/org/ox.el (org-export-expand-include-keyword):
* lisp/progmodes/ada-xref.el (ada-treat-cmd-string):
* lisp/progmodes/cfengine.el (cfengine2-font-lock-keywords):
* lisp/progmodes/cperl-mode.el (cperl-to-comment-or-eol)
(cperl-find-pods-heres, cperl-fix-line-spacing)
(cperl-have-help-regexp, cperl-word-at-point-hard)
(cperl-make-regexp-x):
* lisp/progmodes/dcl-mode.el (dcl-option-value-offset):
* lisp/progmodes/etags.el (tag-implicit-name-match-p):
* lisp/progmodes/fortran.el (fortran-fill):
* lisp/progmodes/gdb-mi.el (gdb-speedbar-expand-node)
(gdb-locals-handler-custom):
* lisp/progmodes/grep.el (grep-mode-font-lock-keywords):
* lisp/progmodes/gud.el (gud-jdb-find-source-using-classpath):
* lisp/progmodes/js.el (js--continued-expression-p):
* lisp/progmodes/m4-mode.el (m4-font-lock-keywords):
* lisp/progmodes/meta-mode.el (meta-indent-level-count):
* lisp/progmodes/mixal-mode.el (mixal-font-lock-keywords):
* lisp/progmodes/opascal.el (opascal-find-unit-in-directory):
* lisp/progmodes/pascal.el (pascal-progbeg-re):
* lisp/progmodes/ruby-mode.el (ruby-expression-expansion-re)
(ruby-expr-beg, ruby-parse-partial)
(ruby-toggle-string-quotes, ruby-font-lock-keywords):
* lisp/progmodes/sql.el (sql--make-help-docstring):
* lisp/progmodes/verilog-mode.el (verilog-coverpoint-re)
(verilog-skip-forward-comment-p)
(verilog-read-sub-decls-gate)
(verilog-read-auto-template-middle):
* lisp/progmodes/vhdl-mode.el (vhdl-resolve-env-variable)
(vhdl-speedbar-expand-project, vhdl-speedbar-expand-entity)
(vhdl-speedbar-expand-architecture)
(vhdl-speedbar-expand-config, vhdl-speedbar-expand-package)
(vhdl-speedbar-dired):
* lisp/speedbar.el (speedbar-dired, speedbar-tag-file)
(speedbar-tag-expand):
* lisp/textmodes/dns-mode.el (dns-mode-font-lock-keywords):
* lisp/textmodes/flyspell.el (flyspell-debug-signal-word-checked):
* lisp/textmodes/ispell.el (ispell-process-line):
* lisp/textmodes/reftex-cite.el (reftex-end-of-bib-entry):
* lisp/textmodes/reftex-ref.el (reftex-replace-prefix-escapes):
* lisp/url/url-parse.el (url-generic-parse-url):
* lisp/url/url-util.el (url-truncate-url-for-viewing):
* lisp/vc/diff-mode.el (diff-unified->context):
* lisp/vc/vc-bzr.el (vc-bzr-error-regexp-alist):
* lisp/vc/vc-cvs.el (vc-cvs-parse-status):
* lisp/woman.el (woman0-el, woman-if-ignore)
(woman-change-fonts):
* lisp/xdg.el (xdg--substitute-home-env):
Fix regular-expression infelicities and typos.

Fix regular expression typos
Fix typos reported by Mattias Engdegård in:
that occurred in preloaded modules.
* lisp/frame.el (frame-set-background-mode):
* lisp/international/mule.el (sgml-html-meta-auto-coding-function):
* lisp/isearch.el (isearch-pre-command-hook):
* lisp/minibuffer.el (completion--embedded-envvar-re):

4 files changed, 7 insertions, 7 deletions

diff --git a/lisp/calc/calc-graph.el b/lisp/calc/calc-graph.el
index 317f403ead6..56f11c67119 100644
--- a/lisp/calc/calc-graph.el
+++ b/lisp/calc/calc-graph.el
@@ -1121,7 +1121,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
                  (eval (intern
                         (concat "var-"
                                 (save-excursion
-                                  (re-search-backward ":\\(.*\\)\\}")
+				  (re-search-backward ":\\(.*\\)}")
                                   (match-string 1))))))
               (error nil)))
       (if yerr
@@ -1186,7 +1186,7 @@ This \"dumb\" driver will be present in Gnuplot 3.0."
 	 (or (looking-at "{")
 	     (error "Can't hide this curve (wrong format)"))
 	 (forward-char 1)
-	 (if (looking-at "*")
+	 (if (looking-at "\\*")
 	     (if (or (null flag) (<= (prefix-numeric-value flag) 0))
 		 (delete-char 1))
 	   (if (or (null flag) (> (prefix-numeric-value flag) 0))
diff --git a/lisp/calc/calc-help.el b/lisp/calc/calc-help.el
index cf7574e7385..d9e8fe779bf 100644
--- a/lisp/calc/calc-help.el
+++ b/lisp/calc/calc-help.el
@@ -172,7 +172,7 @@ C-w  Describe how there is no warranty for Calc."
 	  (setq desc (concat "M-" (substring desc 4))))
       (while (string-match "^M-# \\(ESC \\|C-\\)" desc)
 	(setq desc (concat "M-# " (substring desc (match-end 0)))))
-      (if (string-match "\\(DEL\\|\\LFD\\|RET\\|SPC\\|TAB\\)" desc)
+      (if (string-match "\\(DEL\\|LFD\\|RET\\|SPC\\|TAB\\)" desc)
           (setq desc (replace-match "<\\&>" nil nil desc)))
       (if briefly
 	  (let ((msg (with-current-buffer (get-buffer-create "*Calc Summary*")
diff --git a/lisp/calc/calc-lang.el b/lisp/calc/calc-lang.el
index 3f55fb15d56..ee107df39c1 100644
--- a/lisp/calc/calc-lang.el
+++ b/lisp/calc/calc-lang.el
@@ -753,8 +753,8 @@
                  right " \\right)"))
           ((and (eq (aref func 0) ?\\)
                 (not (or
-                      (string-match "\\hbox{" func)
-                      (string-match "\\text{" func)))
+                      (string-match "\\\\hbox{" func)
+                      (string-match "\\\\text{" func)))
                 (= (length a) 2)
                 (or (Math-realp (nth 1 a))
                     (memq (car (nth 1 a)) '(var *))))
@@ -1127,7 +1127,7 @@
                  (math-read-token)))))))
 
 (put 'eqn 'math-lang-read
-     '((eq (string-match "->\\|<-\\|+-\\|\\\\dots\\|~\\|\\^"
+     '((eq (string-match "->\\|<-\\|\\+-\\|\\\\dots\\|~\\|\\^"
                          math-exp-str math-exp-pos)
            math-exp-pos)
        (progn
diff --git a/lisp/calc/calc.el b/lisp/calc/calc.el
index 7390ea350e1..35f13f9656a 100644
--- a/lisp/calc/calc.el
+++ b/lisp/calc/calc.el
@@ -2430,7 +2430,7 @@ the United States."
 	  (beep)
 	(and (not (calc-minibuffer-contains "[-+]?\\(1[5-9]\\|[2-9][0-9]\\)#.*"))
 	     (search-forward "e" nil t))
-	(if (looking-at "+")
+	(if (looking-at "\\+")
 	    (delete-char 1))
 	(if (looking-at "-")
 	    (delete-char 1)