More minor regex cleanup

Problems reported by Mattias Engdegård in:
https://lists.gnu.org/r/emacs-devel/2019-03/msg00643.html
plus a few others that I noticed.
* lisp/auth-source-pass.el (auth-source-pass--parse-data):
* lisp/org/org-datetree.el (org-datetree--find-create):
* lisp/org/org-pcomplete.el (org-thing-at-point):
* lisp/progmodes/js.el (js--end-of-do-while-loop-p):
* lisp/textmodes/sgml-mode.el:
(sgml-electric-tag-pair-before-change-function):
* lisp/textmodes/texnfo-upd.el (texinfo-menu-copy-old-description):
* lisp/url/url-http.el (url-http-parse-response):
Fix regular expression and similar syntax.

1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/auth-source-pass.el b/lisp/auth-source-pass.el
index 29ff9c66856..4283ed0392b 100644
--- a/lisp/auth-source-pass.el
+++ b/lisp/auth-source-pass.el
@@ -139,7 +139,7 @@ The secret is the first line of CONTENTS."
 (defun auth-source-pass--parse-data (contents)
   "Parse the password-store data in the string CONTENTS and return an alist.
 CONTENTS is the contents of a password-store formatted file."
-  (let ((lines (split-string contents "\n" t "\\\s")))
+  (let ((lines (split-string contents "\n" t "[ \t]+")))
     (seq-remove #'null
                 (mapcar (lambda (line)
                           (let ((pair (mapcar (lambda (s) (string-trim s))