bug#40861: 26.3; parse-time-string does not intepret times

[rjhwelsh+emacs@posteo.net]

Hi,

I have noticed that (parse-time-string s) is not working properly for
time strings, INCLUDING provided examples in the manual.

I first noticed it on org-mode; and tested it with (org-read-date) which
uses (parse-time-string) to interpret times.

I suspect there is some bug in =parse-time-rules=.
Scratch buffer to replicate the issue is provided below.

Kind regards,
Roger

;; *scratch*
;; org.el
(require 'org)
org

(org-read-date nil nil "14:00")
"2020-04-26"

;; parse-time.el
(parse-time-string "14:00")
(nil nil nil nil nil nil nil nil nil)

;; Provided examples from the manual
(parse-time-string "Fri, 25 Mar 2016 16:24:56 +0100")
(nil nil nil 25 3 2016 5 nil nil)

(parse-time-string "1998-09-12T12:21:54-0200")
(nil nil nil nil nil nil nil nil nil)

parse-time-rules


In GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.13)
 of 2020-03-21 built on ponos
Windowing system distributor 'The X.Org Foundation', version 11.0.12007000
Recent messages:
compiling byte-compile-out-toplevel...done
compiling byte-compile-constant...done
compiling byte-compile-variable-ref...done
compiling byte-optimize-form...done
compiling byte-optimize-body...done
compiling byte-optimize-predicate...done
compiling byte-optimize-binary-predicate...done
compiling byte-optimize-form-code-walker...done
compiling byte-optimize-lapcode...done
../../../../../usr/share/emacs/26.3/lisp/emacs-lisp/eieio.el: ‘object-print’ is an obsolete generic function (as of 26.1); use ‘cl-print-object’ instead.

Configured using:
 'configure --prefix=/usr --build=x86_64-pc-linux-gnu
 --host=x86_64-pc-linux-gnu --mandir=/usr/share/man
 --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
 --localstatedir=/var/lib --disable-silent-rules
 --docdir=/usr/share/doc/emacs-26.3-r1
 --htmldir=/usr/share/doc/emacs-26.3-r1/html --libdir=/usr/lib64
 --program-suffix=-emacs-26 --includedir=/usr/include/emacs-26
 --infodir=/usr/share/info/emacs-26 --localstatedir=/var
 --enable-locallisppath=/etc/emacs:/usr/share/emacs/site-lisp
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 --without-m17n-flt --with-x-toolkit=gtk3 --without-xwidgets
 'CFLAGS=-march=ivybridge -O2' CPPFLAGS= 'LDFLAGS=-Wl,-O1
 -Wl,--as-needed''

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GLIB NOTIFY ACL GNUTLS LIBXML2
FREETYPE XFT ZLIB GTK3 X11 XDBE XIM THREADS LCMS2

Important settings:
  value of $LC_CTYPE: en_NZ.utf8
  value of $LANG: en_NZ.utf8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-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

Load-path shadows:
None found.

Features:
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Memory information:
((conses 16 390750 33640)
 (symbols 48 25725 0)
 (miscs 40 42 139)
 (strings 32 36675 1238)
 (string-bytes 1 1177936)
 (vectors 16 9843)
 (vector-slots 8 473886 20554)
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 (buffers 992 11))