bug#49017: 28.0.50; fractions in iso8601-parse-time sometimes off

[J.P.]

Severity: minor
Tags: patch

I think the function `iso8601-parse-time' may be giving questionable
output when fed a string containing fractional seconds.

  (car (iso8601-parse-time "10:20:30.000001" t))
    ⇒ (301 . 10)

  ;; (30000001 . 1000000) ; expected

I've attempted a fix by taking the dumbest possible route, but it may be
too dumb for the likes of Emacs (or just plain wrong). If that's the
case, please forgive. Thanks.


In GNU Emacs 28.0.50 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.24.29, 
cairo version 1.17.4)
 of 2021-06-13 built on localhost
Repository revision: 2f7a115a9c876e69296974e8e02ece569df988e9
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Fedora 34 (Workstation Edition)

Configured using:
 'configure --enable-check-lisp-object-type --enable-checking=yes,glyphs
 --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu
 --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin
 --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share
 --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec
 --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man
 --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg --with-png
 --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3
 --with-gpm=no --with-xwidgets --with-modules --with-harfbuzz
 --with-cairo --with-json build_alias=x86_64-redhat-linux-gnu
 host_alias=x86_64-redhat-linux-gnu CC=gcc 'CFLAGS=-O0 -g3'
 LDFLAGS=-Wl,-z,relro
 PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

Configured features:
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LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
X11 XDBE XIM XPM XWIDGETS GTK3 ZLIB

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

Major mode: Lisp Interaction

Minor modes in effect:
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  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
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  blink-cursor-mode: t
  auto-composition-mode: t
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Load-path shadows:
None found.

Features:
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xwidget-internal dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting cairo move-toolbar gtk x-toolkit
x multi-tty make-network-process emacs)

Memory information:
((conses 16 51751 11269)
 (symbols 48 6606 1)
 (strings 32 18276 2432)
 (string-bytes 1 614395)
 (vectors 16 13358)
 (vector-slots 8 178597 13456)
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 (intervals 56 279 0)
 (buffers 992 11))

0001-Use-string-length-for-fraction-in-iso8601-parse-time.patch
Description: Text Data