This report is about some mismatches between what the docstring says,
and what the custom types allow, in cus-start.el.

- cursor-type-types
Two problems here:
1. The :tag for the (hbar . HEIGHT) option reads:
Horizontal bar with specified width.
It should say height.

2. The custom-type doesn't allow the (box . SIZE) option, described in
the docstring.

- hscroll-step
The docstring says the value can be nil or 0, but the type is just
number.  0 and nil have the same effect, according to the docstring, but
it would be nice if the user could set it to nil if he wants to, using
the Custom interface.

- scalable-fonts-allowed
The type is boolean, but the docstring says it can also be a list of
regular expressions.


In GNU Emacs 28.0.50 (build 68, x86_64-pc-linux-gnu, cairo version 1.15.10)
 of 2020-09-25 built on tbb-desktop
Repository revision: 49efa8b2ff7c2e0f93d958fcca79d50d313b7e9b
Repository branch: widget-character-improvements-display-design
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description: Ubuntu 18.04.5 LTS

Configured using:
 'configure --with-x-toolkit=no'

Configured features:
XPM JPEG TIFF GIF PNG CAIRO SOUND DBUS GSETTINGS GLIB NOTIFY INOTIFY
GNUTLS LIBXML2 FREETYPE HARFBUZZ ZLIB OLDXMENU X11 XDBE XIM MODULES
THREADS PDUMPER

Important settings:
  value of $LC_MONETARY: es_AR.UTF-8
  value of $LC_NUMERIC: es_AR.UTF-8
  value of $LC_TIME: es_AR.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Org

Minor modes in effect:
  TeX-PDF-mode: t
  shell-dirtrack-mode: t
  global-semanticdb-minor-mode: t
  global-semantic-idle-scheduler-mode: t
  semantic-mode: t
  global-ede-mode: t
  ede-minor-mode: t
  tooltip-mode: t
  global-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: org-auto-fill-function
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
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ol-gnus nnselect nnir ol-docview doc-view jka-compr image-mode exif
ol-bibtex bibtex ol-bbdb ol-w3m ielm cl-print debug backtrace ruby-mode
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rng-match rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap sgml-mode
nxml-util nxml-enc xmltok semantic/bovine/make semantic/bovine/make-by
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ede/dired shell grep semantic/tag-write ede/locate macrostep-c cmacexp
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esh-util init-lisp slime compile etags fileloop generator xref project
arc-mode archive-mode noutline outline easy-mmode pp comint ansi-color
ring hyperspec thingatpt init-global finder-inf init-package tex-site
slime-autoloads info package easymenu browse-url url-handlers url-parse
auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib tooltip eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode elisp-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
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jka-cmpr-hook help simple abbrev obarray cl-preloaded nadvice button
loaddefs faces cus-face macroexp files window text-properties overlay
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hashtable-print-readable backquote threads dbusbind inotify
dynamic-setting system-font-setting font-render-setting cairo x
multi-tty make-network-process emacs)

Memory information:
((conses 16 1345052 101974)
 (symbols 48 49775 2)
 (strings 32 281832 33407)
 (string-bytes 1 7358138)
 (vectors 16 109138)
 (vector-slots 8 1799298 138816)
 (floats 8 465 339)
 (intervals 56 71694 1388)
 (buffers 992 199))