bug#17836: 24.3; `describe-fontset' confused about e.g. ?\C-@

[Samuel Bronson]

When I use `describe-fontset', I get output that starts out something
like:

--8<---------------cut here---------------start------------->8---
Fontset: -misc-fixed-medium-r-semicondensed--13-*-*-*-*-*-fontset-xterm.default
CHAR RANGE (CODE RANGE)
    FONT NAME (REQUESTED and [OPENED])
C-@ .. � (#x43 .. #x10FFFF)
    -Misc-Fixed-medium-r-semicondensed--13-*-75-75-c-120-ISO10646-1
--8<---------------cut here---------------end--------------->8---

Notice how #x43 is NOT a representation of `?\C-@' but, in fact, of
`?C'?  That's fairly strange bug.  (Why would you try to extract the
codepoints AFTER formatting the range as a string ...?)

(I also get an assload of xlfd descriptors full of asterisks and dashes,
with different registry-coding pairs...)

In GNU Emacs 24.3.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2014-05-16 on babin, modified by Debian
Windowing system distributor `Colin Harrison', version 11.0.60900031
System Description:     Debian GNU/Linux testing (jessie)

Configured using:
 `configure '--build' 'i486-linux-gnu' '--build' 'i486-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 
'--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
 '--with-crt-dir=/usr/lib/i386-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=lucid' '--with-toolkit-scroll-bars' '--without-gconf'
 '--without-gsettings' 'build_alias=i486-linux-gnu' 'CFLAGS=-g -O2
 -fstack-protector --param=ssp-buffer-size=4 -Wformat
 -Werror=format-security -Wall' 'LDFLAGS=-Wl,-z,relro'
 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LC_COLLATE: C
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Help

Minor modes in effect:
  semantic-minor-modes-format: ((:eval (if (or semantic-highlight-edits-mode 
semantic-show-unmatched-syntax-mode)  S)))
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  xterm-mouse-mode: t
  show-paren-mode: t
  recentf-mode: t
  tooltip-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
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> <down-mouse-1> <mouse-1> <left> <left> M-x 
<up> <up> <up> <down> <down> <down> <down> C-h = C-h 
? <next> <prior> <next> <prior> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> q C-x b C-g 
M-x <up> <up> <down> <return> <up> <return> <down> 
C-x o <down> <down> <down> M-x d e s c <tab> c h <tab> 
<return> <C-home> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <end> <up> <up> <up> <down> 
<end> <down> <down> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <down> <down> <down> <down> <down> <up> <up> 
<up> <up> <up> <up> <down> <down> <down> <up> <up> 
<mouse-1> <mouse-1> <down-mouse-1> <mouse-1> <help-echo> 
<down-mouse-1> <mouse-1> C-x b <return> C-x b <return> 
C-g <C-home> <C-end> <C-home> q <up> <up> <up> <up> 
<up> <end> <next> <next> <next> <C-end> M-x b <backspace> 
C-g <C-home> <C-end> <C-home> <C-end> <C-home> <C-end> 
M-x l i s t - c h a r <tab> s e t <tab> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> a c <tab> <return> 
<down> <down> <down> C-x o C-x o C-h f C-g M-x M-l 
i s t - f o <home> l <end> f <backspace> n t <tab> 
<return> C-x o <down> <down> <down> <end> <up> <up> 
<end> <down> <end> <down> <end> <up> <up> <end> <down> 
<down> <up> <up> <up> <up> <end> <down> <end> <up> 
<end> <end> <down> <end> <up> <home> <end> <down> <end> 
M-x <up> <up> <up> <up> <return> <up> <return> <down> 
<down> <down> <down> <down> <up> <up> <end> <down> 
<down> <down> <down> <next> <next> <next> <C-end> <C-home> 
<down> <down> <down> <up> <up> <up> <up> <down> <down> 
<down> <up> <up> <up> <up> <up> <S-down> <S-down> <S-down> 
<S-down> <S-down> M-w M-x e m a c s - b u g <tab> <home> 
r e p <tab> <backspace> <tab> <return>

Recent messages:
scroll-up-command: End of buffer [2 times]
Mark set
Quit
Mark set [6 times]
Making completion list...
byte-code: End of buffer [3 times]
Quit
Mark set [2 times]
byte-code: Beginning of buffer [3 times]
Mark set
0

Load-path shadows:
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/usr/share/emacs24/site-lisp/wl/ssl
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/usr/share/emacs/site-lisp/css-mode/css-mode
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/usr/share/emacs/site-lisp/autotest-mode
/usr/share/emacs24/site-lisp/cmake-data/cmake-mode hides 
/usr/share/emacs/site-lisp/cmake-mode
/usr/share/emacs24/site-lisp/flim/md4 hides /usr/share/emacs/24.3/lisp/md4
/home/naesten/system/emacs/dist/elisp/loaddefs hides 
/usr/share/emacs/24.3/lisp/loaddefs
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/usr/share/emacs/24.3/lisp/hex-util
/home/naesten/system/emacs/dist/elpa/json-1.2/json hides 
/usr/share/emacs/24.3/lisp/json
/home/naesten/system/emacs/dist/elisp/t-mouse hides 
/usr/share/emacs/24.3/lisp/t-mouse
/usr/share/emacs24/site-lisp/html-helper-mode/tempo hides 
/usr/share/emacs/24.3/lisp/tempo
/usr/share/emacs24/site-lisp/css-mode/css-mode hides 
/usr/share/emacs/24.3/lisp/textmodes/css-mode
/usr/share/emacs/site-lisp/rst hides /usr/share/emacs/24.3/lisp/textmodes/rst
/usr/share/emacs24/site-lisp/dictionaries-common/ispell hides 
/usr/share/emacs/24.3/lisp/textmodes/ispell
/usr/share/emacs24/site-lisp/dictionaries-common/flyspell hides 
/usr/share/emacs/24.3/lisp/textmodes/flyspell
/usr/share/emacs24/site-lisp/flim/sasl-digest hides 
/usr/share/emacs/24.3/lisp/net/sasl-digest
/usr/share/emacs24/site-lisp/flim/sasl-cram hides 
/usr/share/emacs/24.3/lisp/net/sasl-cram
/usr/share/emacs24/site-lisp/flim/hmac-md5 hides 
/usr/share/emacs/24.3/lisp/net/hmac-md5
/usr/share/emacs24/site-lisp/flim/hmac-def hides 
/usr/share/emacs/24.3/lisp/net/hmac-def
/usr/share/emacs24/site-lisp/flim/sasl-ntlm hides 
/usr/share/emacs/24.3/lisp/net/sasl-ntlm
/usr/share/emacs24/site-lisp/flim/ntlm hides /usr/share/emacs/24.3/lisp/net/ntlm
/usr/share/emacs24/site-lisp/flim/sasl hides /usr/share/emacs/24.3/lisp/net/sasl
/usr/share/emacs24/site-lisp/wl/rfc2368 hides 
/usr/share/emacs/24.3/lisp/mail/rfc2368
/home/naesten/system/emacs/dist/elisp/package hides 
/usr/share/emacs/24.3/lisp/emacs-lisp/package
/home/naesten/system/emacs/dist/elpa/tabulated-list-0/tabulated-list hides 
/usr/share/emacs/24.3/lisp/emacs-lisp/tabulated-list
/usr/share/emacs24/site-lisp/auctex/toolbar-x hides 
/usr/share/emacs/site-lisp/auctex/toolbar-x
/usr/share/emacs24/site-lisp/auctex/tex-style hides 
/usr/share/emacs/site-lisp/auctex/tex-style
/usr/share/emacs24/site-lisp/auctex/tex-bar hides 
/usr/share/emacs/site-lisp/auctex/tex-bar
/usr/share/emacs24/site-lisp/auctex/tex-fold hides 
/usr/share/emacs/site-lisp/auctex/tex-fold
/usr/share/emacs24/site-lisp/auctex/preview hides 
/usr/share/emacs/site-lisp/auctex/preview
/usr/share/emacs24/site-lisp/auctex/context hides 
/usr/share/emacs/site-lisp/auctex/context
/usr/share/emacs24/site-lisp/auctex/context-nl hides 
/usr/share/emacs/site-lisp/auctex/context-nl
/usr/share/emacs24/site-lisp/auctex/prv-emacs hides 
/usr/share/emacs/site-lisp/auctex/prv-emacs
/usr/share/emacs24/site-lisp/auctex/context-en hides 
/usr/share/emacs/site-lisp/auctex/context-en
/usr/share/emacs24/site-lisp/auctex/tex-jp hides 
/usr/share/emacs/site-lisp/auctex/tex-jp
/usr/share/emacs24/site-lisp/auctex/plain-tex hides 
/usr/share/emacs/site-lisp/auctex/plain-tex
/usr/share/emacs24/site-lisp/auctex/bib-cite hides 
/usr/share/emacs/site-lisp/auctex/bib-cite
/usr/share/emacs24/site-lisp/auctex/tex-font hides 
/usr/share/emacs/site-lisp/auctex/tex-font
/usr/share/emacs24/site-lisp/auctex/tex-mik hides 
/usr/share/emacs/site-lisp/auctex/tex-mik
/usr/share/emacs24/site-lisp/auctex/font-latex hides 
/usr/share/emacs/site-lisp/auctex/font-latex
/usr/share/emacs24/site-lisp/auctex/texmathp hides 
/usr/share/emacs/site-lisp/auctex/texmathp
/usr/share/emacs24/site-lisp/auctex/tex-info hides 
/usr/share/emacs/site-lisp/auctex/tex-info
/usr/share/emacs24/site-lisp/auctex/latex hides 
/usr/share/emacs/site-lisp/auctex/latex
/usr/share/emacs24/site-lisp/auctex/multi-prompt hides 
/usr/share/emacs/site-lisp/auctex/multi-prompt
/usr/share/emacs24/site-lisp/auctex/tex hides 
/usr/share/emacs/site-lisp/auctex/tex
/usr/share/emacs24/site-lisp/auctex/tex-buf hides 
/usr/share/emacs/site-lisp/auctex/tex-buf
/usr/share/emacs24/site-lisp/html-helper-mode/hhm-config hides 
/usr/share/emacs/site-lisp/html-helper-mode/hhm-config
/usr/share/emacs24/site-lisp/html-helper-mode/visual-basic-mode hides 
/usr/share/emacs/site-lisp/html-helper-mode/visual-basic-mode
/usr/share/emacs24/site-lisp/html-helper-mode/tempo hides 
/usr/share/emacs/site-lisp/html-helper-mode/tempo
/usr/share/emacs24/site-lisp/html-helper-mode/html-helper-mode hides 
/usr/share/emacs/site-lisp/html-helper-mode/html-helper-mode
/usr/share/emacs24/site-lisp/mailcrypt/mc-toplev hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-toplev
/usr/share/emacs24/site-lisp/mailcrypt/mc-remail hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-remail
/usr/share/emacs24/site-lisp/mailcrypt/mc-pgp6 hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-pgp6
/usr/share/emacs24/site-lisp/mailcrypt/mc-pgp5 hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-pgp5
/usr/share/emacs24/site-lisp/mailcrypt/mc-pgp hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-pgp
/usr/share/emacs24/site-lisp/mailcrypt/mc-gpg hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-gpg
/usr/share/emacs24/site-lisp/mailcrypt/mailcrypt hides 
/usr/share/emacs/site-lisp/mailcrypt/mailcrypt
/usr/share/emacs24/site-lisp/mailcrypt/expect hides 
/usr/share/emacs/site-lisp/mailcrypt/expect
/usr/share/emacs24/site-lisp/mailcrypt/mc-setversion hides 
/usr/share/emacs/site-lisp/mailcrypt/mc-setversion
/usr/share/emacs24/site-lisp/psgml/psgml-edit hides 
/usr/share/emacs/site-lisp/psgml/psgml-edit
/usr/share/emacs24/site-lisp/psgml/psgml-charent hides 
/usr/share/emacs/site-lisp/psgml/psgml-charent
/usr/share/emacs24/site-lisp/psgml/psgml hides 
/usr/share/emacs/site-lisp/psgml/psgml
/usr/share/emacs24/site-lisp/psgml/psgml-other hides 
/usr/share/emacs/site-lisp/psgml/psgml-other
/usr/share/emacs24/site-lisp/psgml/psgml-api hides 
/usr/share/emacs/site-lisp/psgml/psgml-api
/usr/share/emacs24/site-lisp/psgml/psgml-sysdep hides 
/usr/share/emacs/site-lisp/psgml/psgml-sysdep
/usr/share/emacs24/site-lisp/psgml/psgml-init hides 
/usr/share/emacs/site-lisp/psgml/psgml-init
/usr/share/emacs24/site-lisp/psgml/psgml-parse hides 
/usr/share/emacs/site-lisp/psgml/psgml-parse
/usr/share/emacs24/site-lisp/psgml/psgml-info hides 
/usr/share/emacs/site-lisp/psgml/psgml-info
/usr/share/emacs24/site-lisp/psgml/psgml-ids hides 
/usr/share/emacs/site-lisp/psgml/psgml-ids
/usr/share/emacs24/site-lisp/psgml/psgml-dtd hides 
/usr/share/emacs/site-lisp/psgml/psgml-dtd
/usr/share/emacs/24.3/lisp/gnus/.dir-locals hides 
/home/naesten/system/emacs/dist/elisp/magit/.dir-locals

Features:
(thai-util thai-word files-x boxquote eldoc mule-diag noutline outline
checkdoc elint canlock mo-git-blame vc-annotate autorevert log4j-mode
gnus-html vcard-autoloads bbdb-w3 vc-bzr vc-sccs vc-svn vc-cvs vc-rcs
gitignore-mode gitconfig-mode-autoloads gitignore-mode-autoloads
mu-register mu-cite alist std11 pcustom poem poem-e20 poem-e20_3 pces
pces-e20 pces-20 broken poe pym static apel-ver product informat
footnote crm latex tex-style tex-info texinfo tex nndoc nnmairix nnml
nnir gnus-sync json gnus-sieve deuglify gnus-notifications gnus-fun
notifications dbus xml gnus-dup gnus-demon gnus-delay gnus-draft
gnus-bookmark time-stamp ede/generic semantic/db semantic/util-modes
semantic/util semantic semantic/tag semantic/lex semantic/fw mode-local
ede/shell eieio-opt find-dired locate ede/dired ede/emacs ede/cpp-root
ede/speedbar ede/files ede ede/base ede/auto ede/source eieio-speedbar
speedbar sb-image ezimage dframe eieio-custom cedet ebrowse ebuff-menu
autoconf autoconf-mode gnus-diary nndiary occur-x-autoloads package-x
descr-text shadow emacsbug tmm url-handlers nnweb mm-url nnregistry
html-mode jsp-html-helper-mode asp-html-helper-mode php-html-helper-mode
html-helper-mode w3m-form w3m-cookie w3m-bookmark w3m-tabmenu
w3m-session w3m doc-view image-mode w3m-hist w3m-fb bookmark-w3m w3m-ems
w3m-ccl ccl w3m-favicon w3m-image w3m-proc w3m-util gnus-cus conf-mode
python xmtn-dvc dvc-status xmtn-conflicts xmtn-ids xmtn-match
xmtn-automate xmtn-compat xmtn-run xmtn-basic-io xmtn-base sh-script
smie executable tramp-sh debian-control-mode debian-bts-control
debian-changelog-mode tramp-cache rx tramp tramp-compat tramp-loaddefs
shell pcomplete dpkg-dev-el-loaddefs ido find-file-in-git-repo dired-aux
loadhist autoload lisp-mnt url-http url-gw url-cache url-auth finder-inf
cperl-mode perl-mode tabify man make-mode debug gnus-salt gnus-kill
uudecode flow-fill spam-report mule-util gnus-async gnus-bcklg
gnus-topic nndraft nnmh nnfolder bbdb-gnus nnnil gnus-registry registry
eieio-base spam spam-stat gnus-uu yenc gnus-eform gnus-agent gnus-srvr
gnus-score score-mode nnvirtual gnus-ml netrc gnutls network-stream
starttls tls nntp gnus-cache psgml-info shr mm-archive psgml-dtd
psgml-parse psgml-api psgml-ids psgml-other psgml-sysdep psgml-edit
browse-url sgml-mode psgml psgml-html info cpp apropos face-remap
bbdb-hooks cc-langs inform-mode imenu term disp-table ehelp electric
ispell qp rmailmm rmail two-column iso-transl misearch multi-isearch
jka-compr parse-time smiley gnus-cite gnus-msg gnus-art mm-uu mml2015
epg-config mm-view mml-smime smime dig gnus-sum nnoo gnus-group
gnus-undo nnmail mail-source gnus-start gnus-spec gnus-int gnus-range
gnus-win gnus gnus-ems nnheader bbdb-snarf bbdb-com view magit-bisect
magit-key-mode magit mail-extr sort tla smerge-mode dvc-state dvc-config
diff tla-gnus dvc-gnus dvc-cmenu dvc-about dvc-version thingatpt
mailcrypt message sendmail format-spec rfc822 mml mml-sec mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev mail-utils gmm-utils
mailheader reporter help-mode debian-bug rfc2047 rfc2045 ietf-drums
vc-git xgit-dvc xgit cus-edit xgit-annotate rect dvc-annotate xgit-log
dvc-revlist dvc-diff uniquify dvc-fileinfo bzr-core tla-core pp
tla-autoconf tla-defs dvc-log dvc-unified dvc-tips dired-x dired ffap
commit-patch-buffer log-edit pcvs-util add-log vc vc-dispatcher
diff-mode easy-mmode ediff-merg ediff-diff ediff-wind ediff-help
ediff-util ediff-mult ediff-init ediff xdarcs-core xgit-core xhg-core
xmtn-minimal server derived xcscope arc-mode archive-mode asm-mode
my-asm slime-autoloads dvc-autoloads dvc-core dvc-lisp dvc-buffers
dvc-ui dvc-register dvc-utils dvc-emacs ewoc dvc-defs dvc-site cc-mode
cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars
cc-defs elisp-depend ps-print-bg-fixup bbdb timezone wgrep grep compile
comint ansi-color ring edebug warnings trace xt-mouse paren recentf
tree-widget wid-edit cus-start cus-load eldoc-eval-autoloads
elisp-cache-autoloads erc-hl-nicks-autoloads
fill-column-indicator-autoloads find-file-in-git-repo-autoloads
mo-git-blame-autoloads smartparens-autoloads dash-autoloads
synonyms-autoloads tabulated-list-autoloads w3-autoloads wgrep-autoloads
yagist-autoloads json-autoloads yasnippet-bundle-autoloads
yasnippet-bundle dropdown-list advice help-fns advice-preload yasnippet
easymenu assoc package find-func cl-macs gv w3m-load psgml-init
proof-site proof-autoloads pg-vars mmm-auto mmm-vars mmm-compat cl
cl-lib mailcrypt-init haskell-mode-autoloads edmacro kmacro tempo url
url-proxy url-privacy url-expand url-methods url-history url-cookie
url-domsuf url-util url-parse auth-source eieio byte-opt bytecomp
byte-compile cconv gnus-util time-date mm-util mail-prsvr password-cache
url-vars mailcap xml-parse doxymacs debian-el debian-el-loaddefs
bbdb-autoloads preview-latex tex-site auto-loads tooltip ediff-hook
vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind dynamic-setting
font-render-setting x-toolkit x multi-tty emacs)

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