bug#28901: 25.3; Font selector fails to remember current font and size

[Faré]

  Open the "Options" menu, select the "Set Default Font" action.
  You can select a font, but the default offered is not based on the
  font and size currently in use, which makes it quite a pain to select
  a variant of what is currently used: for instance, you want one size
  less or more while keeping the same font (that you don't know the name
  of), or you want to try another font in the same family (that you
  don't remember the exact name of).

  Relatedly, a very useful yet missing option would be one that filters fonts
  to only display monospace fonts.


In GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.21)
 of 2017-10-05 built on localhost
Windowing system distributor 'The X.Org Foundation', version 11.0.11903000
Configured using:
 'configure --disable-dependency-tracking
 --prefix=/nix/store/mzd9pa3gs3hi6qy73w8hqv4zlilfka18-emacs-25.3
 --with-modules --with-x-toolkit=gtk3 --with-xft'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS NOTIFY LIBSELINUX GNUTLS
LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 MODULES

Important settings:
  value of $EMACSLOADPATH:
/nix/store/js6f93ihr2crmijhi7j0ql9nszdszjsz-emacs-packages-deps/share/emacs/site-lisp:
  value of $LC_CTYPE: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8

Major mode: LaTeX

Minor modes in effect:
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  global-edit-server-edit-mode: t
  override-global-mode: t
  show-paren-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-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
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
Saving file /home/fare/fare/phdthesis/40-architecture.tex...
Wrote /home/fare/fare/phdthesis/40-architecture.tex
Saving file /home/fare/fare/phdthesis/40-architecture.tex...
Wrote /home/fare/fare/phdthesis/40-architecture.tex
Saving file /home/fare/fare/phdthesis/40-architecture.tex...
Wrote /home/fare/fare/phdthesis/40-architecture.tex
<XF86TouchpadOn> is undefined
Saving file /home/fare/fare/phdthesis/40-architecture.tex...
Wrote /home/fare/fare/phdthesis/40-architecture.tex
funcall-interactively: End of buffer

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Features:
(shadow sort mail-extr warnings emacsbug message dired format-spec
rfc822 mml mml-sec password-cache epg gnus-util mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail
rfc2047 rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils
misearch multi-isearch vc-git diff-mode tex-mode shell pcomplete
latexenc rainbow-delimiters misterioso-theme term/xterm xterm server
tango-theme mic-paren gambit cmuscheme scheme slime-asdf grep
slime-fancy slime-trace-dialog slime-fontifying-fu slime-package-fu
slime-references slime-compiler-notes-tree slime-presentations bridge
slime-macrostep macrostep slime-mdot-fu slime-enclosing-context
slime-fuzzy slime-fancy-trace slime-fancy-inspector slime-c-p-c
slime-editing-commands slime-autodoc slime-repl elp slime-parse
slime-scratch slime derived lisp-mnt gud apropos compile etags xref
project eieio eieio-core arc-mode archive-mode noutline outline pp
comint ansi-color ring hyperspec thingatpt browse-url slime-autoloads
edit-server-htmlize html2text edit-server advice edmacro kmacro
highlight-chars use-package diminish bind-key easy-mmode paren ido
cl-macs cl-seq cl finder-inf info package epg-config seq seq-25 byte-opt
gv bytecomp byte-compile cl-extra help-mode easymenu cconv cl-loaddefs
pcase cl-lib time-date mule-util tooltip eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win term/common-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian
slovak czech european ethiopic indian cyrillic chinese charscript
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote dbusbind inotify
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 341390 15515)
 (symbols 48 35288 0)
 (miscs 40 319 453)
 (strings 32 77573 12110)
 (string-bytes 1 2172643)
 (vectors 16 34665)
 (vector-slots 8 1499477 204524)
 (floats 8 347 722)
 (intervals 56 1375 0)
 (buffers 976 25))

--
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
Any time you're asking the user to make a choice they don't care about,
you have failed the user — Jeff Atwood