bug#5479: 23.1.91; icomplete-mode should show file completion candidates

[Andrew Hyatt]

On Emacs 25, icomplete now also works for file completion.  I'll close
this bug as fixed.

Tassilo Horn <tassilo@member.fsf.org> writes:

> When enabling icomplete-mode, completion candidates for buffers, emacs
> variables, and functions are shown, but there are none for file
> completion.  To enable file completion candidates display, one can use:
>
>   (add-to-list 'icomplete-with-completion-tables
>                'read-file-name-internal)
>
> This was suggested by Stefan Monnier on help-gnu-emacs@gnu.org in
> <jwvhbq9mwxo.fsf-monnier+gnu.emacs.help@gnu.org>.  I don't know if
> that's more a workaround or the right thing to do.
>
> Additionally, the docstring of `icomplete-with-completion-tables' seems
> a bit wrong.
>
> ,----[ C-h v icomplete-with-completion-tables RET ]
> | icomplete-with-completion-tables is a variable defined in `icomplete.el'.
> | Its value is 
> | (read-file-name-internal internal-complete-buffer)
> | 
> | Documentation:
> | Specialized completion tables with which icomplete should operate.
> | 
> | Icomplete does not operate with any specialized completion tables
> | except those on this list.
> `----
>
> The behavior that icomplete shows function and variable candidates by
> default, and both don't have an entry here, seem to contradict the last
> sentence.
>
>
> In GNU Emacs 23.1.91.1 (x86_64-pc-linux-gnu, GTK+ Version 2.18.6)
>  of 2010-01-25 on thinkpad
> Windowing system distributor `The X.Org Foundation', version 11.0.10704000
> 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' '--libdir=/usr/lib64' 
> '--program-suffix=-emacs-23-vcs' '--infodir=/usr/share/info/emacs-23-vcs' 
> '--with-sound' '--with-x' '--with-gconf' '--without-toolkit-scroll-bars' 
> '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' 
> '--with-xpm' '--with-xft' '--with-libotf' '--with-m17n-flt' 
> '--with-x-toolkit=gtk' '--without-hesiod' '--without-kerberos' 
> '--without-kerberos5' '--with-gpm' '--with-dbus' 
> 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 
> 'CFLAGS=-march=core2 -O2 -pipe' 'LDFLAGS=-Wl,-z,now''
>
> Important settings:
>   value of $LC_ALL: nil
>   value of $LC_COLLATE: nil
>   value of $LC_CTYPE: nil
>   value of $LC_MESSAGES: nil
>   value of $LC_MONETARY: nil
>   value of $LC_NUMERIC: nil
>   value of $LC_TIME: nil
>   value of $LANG: en_US.UTF-8
>   value of $XMODIFIERS: nil
>   locale-coding-system: utf-8-unix
>   default enable-multibyte-characters: t
>
> Major mode: Group
>
> Minor modes in effect:
>   gnus-topic-mode: t
>   gnus-undo-mode: t
>   recentf-mode: t
>   icomplete-mode: t
>   window-number-meta-mode: t
>   window-number-mode: t
>   exec-abbrev-cmd-mode: t
>   global-subword-mode: t
>   subword-mode: t
>   global-hl-line-mode: t
>   savehist-mode: t
>   show-paren-mode: t
>   tooltip-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-encryption-mode: t
>   auto-compression-mode: t
>   column-number-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>
> Recent input:
> SPC v e r <backspace> <backspace> a r i a b l e s , 
> SPC t o o ? SPC SPC T h e SPC l a s t SPC p a r a g 
> r a p h M-q SPC s e e m s SPC c o n t r a d i c t i 
> o n a r y C-c t q SPC w i e d <backspace> <backspace> 
> d e r s p r ü c h l i c h C-c t <down> <down> SPC <left> 
> <left> <left> <left> <left> <left> <left> <left> <left> 
> <left> <left> <left> <left> <M-backspace> <end> . M-q 
> <return> <return> b <tab> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <backspace> <backspace> 
> <backspace> <down> M-q <down> <down> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <down> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <return> 
> H i SPC S t e M-/ , <return> <down> M-q <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> C-k 
> C-k <down> <down> <down> <down> <down> <down> <down> 
> <down> <down> <up> <right> <right> <right> <right> 
> <right> <right> <right> <right> <right> <right> <right> 
> <right> <right> <right> <right> <right> <right> <right> 
> <right> <right> <left> <left> <left> <left> t o SPC 
> <right> <right> <right> <right> <right> <right> <right> 
> <right> <right> <right> <right> <right> <right> <backspace> 
> <backspace> <backspace> SPC t h i s SPC b e h a v i 
> o r M-q C-c C-c c l s M-x r e b <return>
>
> Recent messages:
> Sending...
> Sending news via Gmane using nntp...
> Wrote /home/horn/News/archive/sent-postings/582
> Sending...done
> 20100126T121910.318> Exiting summary buffer and applying spam rules
> (No changes need to be saved)
> 20100126T121911.691> Saving /home/horn/.newsrc.eld...
> Saving file /home/horn/.newsrc.eld...
> Wrote /home/horn/.newsrc.eld
> 20100126T121911.757> Saving /home/horn/.newsrc.eld...done
>
> Load-path shadows:
> ~/repos/el/org-mode/lisp/org-bbdb hides 
> /usr/share/emacs/23.1.91/lisp/org/org-bbdb
> ~/repos/el/org-mode/lisp/org-habit hides 
> /usr/share/emacs/23.1.91/lisp/org/org-habit
> ~/repos/el/org-mode/lisp/org-colview hides 
> /usr/share/emacs/23.1.91/lisp/org/org-colview
> ~/repos/el/org-mode/lisp/org-footnote hides 
> /usr/share/emacs/23.1.91/lisp/org/org-footnote
> ~/repos/el/org-mode/lisp/org-freemind hides 
> /usr/share/emacs/23.1.91/lisp/org/org-freemind
> ~/repos/el/org-mode/lisp/org-compat hides 
> /usr/share/emacs/23.1.91/lisp/org/org-compat
> ~/repos/el/org-mode/lisp/org-icalendar hides 
> /usr/share/emacs/23.1.91/lisp/org/org-icalendar
> ~/repos/el/org-mode/lisp/org-clock hides 
> /usr/share/emacs/23.1.91/lisp/org/org-clock
> ~/repos/el/org-mode/lisp/org-bibtex hides 
> /usr/share/emacs/23.1.91/lisp/org/org-bibtex
> ~/repos/el/org-mode/lisp/org-indent hides 
> /usr/share/emacs/23.1.91/lisp/org/org-indent
> ~/repos/el/org-mode/lisp/org-faces hides 
> /usr/share/emacs/23.1.91/lisp/org/org-faces
> ~/repos/el/org-mode/lisp/org-timer hides 
> /usr/share/emacs/23.1.91/lisp/org/org-timer
> ~/repos/el/org-mode/lisp/org-vm hides /usr/share/emacs/23.1.91/lisp/org/org-vm
> ~/repos/el/org-mode/lisp/org-list hides 
> /usr/share/emacs/23.1.91/lisp/org/org-list
> ~/repos/el/org-mode/lisp/org-gnus hides 
> /usr/share/emacs/23.1.91/lisp/org/org-gnus
> ~/repos/el/org-mode/lisp/org-crypt hides 
> /usr/share/emacs/23.1.91/lisp/org/org-crypt
> ~/repos/el/org-mode/lisp/org-exp hides 
> /usr/share/emacs/23.1.91/lisp/org/org-exp
> ~/repos/el/org-mode/lisp/org-protocol hides 
> /usr/share/emacs/23.1.91/lisp/org/org-protocol
> ~/repos/el/org-mode/lisp/org-inlinetask hides 
> /usr/share/emacs/23.1.91/lisp/org/org-inlinetask
> ~/repos/el/org-mode/lisp/org-wl hides /usr/share/emacs/23.1.91/lisp/org/org-wl
> ~/repos/el/org-mode/lisp/org-plot hides 
> /usr/share/emacs/23.1.91/lisp/org/org-plot
> ~/repos/el/org-mode/lisp/org-w3m hides 
> /usr/share/emacs/23.1.91/lisp/org/org-w3m
> ~/repos/el/org-mode/lisp/org-agenda hides 
> /usr/share/emacs/23.1.91/lisp/org/org-agenda
> ~/repos/el/org-mode/lisp/org-archive hides 
> /usr/share/emacs/23.1.91/lisp/org/org-archive
> ~/repos/el/org-mode/lisp/org-attach hides 
> /usr/share/emacs/23.1.91/lisp/org/org-attach
> ~/repos/el/org-mode/lisp/org-latex hides 
> /usr/share/emacs/23.1.91/lisp/org/org-latex
> ~/repos/el/org-mode/lisp/org-mhe hides 
> /usr/share/emacs/23.1.91/lisp/org/org-mhe
> ~/repos/el/org-mode/lisp/org-irc hides 
> /usr/share/emacs/23.1.91/lisp/org/org-irc
> ~/repos/el/org-mode/lisp/org-table hides 
> /usr/share/emacs/23.1.91/lisp/org/org-table
> ~/repos/el/org-mode/lisp/org-info hides 
> /usr/share/emacs/23.1.91/lisp/org/org-info
> ~/repos/el/org-mode/lisp/org-docbook hides 
> /usr/share/emacs/23.1.91/lisp/org/org-docbook
> ~/repos/el/org-mode/lisp/org-ascii hides 
> /usr/share/emacs/23.1.91/lisp/org/org-ascii
> ~/repos/el/org-mode/lisp/org-jsinfo hides 
> /usr/share/emacs/23.1.91/lisp/org/org-jsinfo
> ~/repos/el/org-mode/lisp/org-id hides /usr/share/emacs/23.1.91/lisp/org/org-id
> ~/repos/el/org-mode/lisp/org-feed hides 
> /usr/share/emacs/23.1.91/lisp/org/org-feed
> ~/repos/el/org-mode/lisp/org-xoxo hides 
> /usr/share/emacs/23.1.91/lisp/org/org-xoxo
> ~/repos/el/org-mode/lisp/org-publish hides 
> /usr/share/emacs/23.1.91/lisp/org/org-publish
> ~/repos/el/org-mode/lisp/org-exp-blocks hides 
> /usr/share/emacs/23.1.91/lisp/org/org-exp-blocks
> ~/repos/el/org-mode/lisp/org-mew hides 
> /usr/share/emacs/23.1.91/lisp/org/org-mew
> ~/repos/el/org-mode/lisp/org-mobile hides 
> /usr/share/emacs/23.1.91/lisp/org/org-mobile
> ~/repos/el/org-mode/lisp/org-datetree hides 
> /usr/share/emacs/23.1.91/lisp/org/org-datetree
> ~/repos/el/org-mode/lisp/org-remember hides 
> /usr/share/emacs/23.1.91/lisp/org/org-remember
> ~/repos/el/org-mode/lisp/org-macs hides 
> /usr/share/emacs/23.1.91/lisp/org/org-macs
> ~/repos/el/org-mode/lisp/org-mouse hides 
> /usr/share/emacs/23.1.91/lisp/org/org-mouse
> ~/repos/el/org-mode/lisp/org-html hides 
> /usr/share/emacs/23.1.91/lisp/org/org-html
> ~/repos/el/org-mode/lisp/org-install hides 
> /usr/share/emacs/23.1.91/lisp/org/org-install
> ~/repos/el/org-mode/lisp/org-src hides 
> /usr/share/emacs/23.1.91/lisp/org/org-src
> ~/repos/el/org-mode/lisp/org hides /usr/share/emacs/23.1.91/lisp/org/org
> ~/repos/el/org-mode/lisp/org-rmail hides 
> /usr/share/emacs/23.1.91/lisp/org/org-rmail
> ~/repos/el/org-mode/lisp/org-mac-message hides 
> /usr/share/emacs/23.1.91/lisp/org/org-mac-message
>
> Features:
> (shadow emacsbug find-func rs-info multi-isearch hippie-exp gnus-dup
> flow-fill mailalias newcomment help-mode view vc-dispatcher vc-svn
> bbdb-gui gnus-cite smiley ansi-color gnus-async gnus-bcklg sort gnus-ml
> gnus-topic parse-time pop3 nnml utf-7 utf7 auth-source nnimap imap trace
> nndraft nnmh nnnil gnus-agent gnus-srvr gnus-score score-mode nnvirtual
> nntp gnus-cache notmuch spam spam-stat gnus-uu yenc gnus-msg garak elim
> lui tracking flyspell ispell incomplete rcirc-late-fix rcirc
> greqlscript-mode greql-mode tg-mode generic th-latex swank-clojure
> clojure-mode slime-repl slime apropos hideshow paredit wtf cus-edit
> cus-start cus-load rdictcc appt diary-lib diary-loaddefs vc-git org-w3m
> org-irc org-jsinfo org-infojs org-html org-exp org-exp-blocks org-info
> org-gnus org-docview org-bibtex org-bbdb org-protocol org-attach org-id
> org-agenda remember org-remember org-datetree org org-footnote org-src
> org-list org-faces org-compat org-macs org-install cal-menu calendar
> cal-loaddefs dired-x dired-aux pcomplete em-term term ehelp electric
> esh-var esh-io esh-cmd esh-ext esh-proc esh-arg eldoc esh-groups eshell
> esh-util esh-module esh-mode lisppaste xml-rpc xml th-boxquote boxquote
> rect highlight-symbol hi-lock footnote smtpmail bbdb-hooks bbdb-gnus
> gnus-art mm-uu mml2015 epg-config mm-view smime dig gnus-sum nnoo
> gnus-group gnus-undo nnmail mail-source format-spec gnus-start gnus-spec
> gnus-int gnus-range message idna sendmail ecomplete mml mml-sec
> password-cache mm-decode mm-bodies mm-encode gmm-utils mailheader
> canlock sha1 hex-util hashcash gnus-win bbdb-snarf mail-extr rfc822
> bbdb-com warnings mailabbrev info server yasnippet dropdown-list
> noutline outline highlight-parentheses browse-kill-ring derived filesets
> recentf tree-widget sr-speedbar speedbar sb-image ezimage dframe ido
> icomplete anything-config compile comint ring semantic/util-modes
> semantic/util semantic semantic/tag semantic/lex semantic/fw eieio
> byte-opt bytecomp byte-compile mode-local cedet imenu w3m-bookmark w3m
> browse-url doc-view jka-compr image-mode w3m-hist w3m-fb w3m-ems w3m-ccl
> ccl w3m-favicon w3m-image w3m-proc w3m-util bookmark pp ffap dired rx
> thingatpt anything woman easymenu man assoc window-number uniquify
> exec-abbrev-cmd easy-mmode cl cl-19 subword hl-line saveplace savehist
> paren th-private edmacro kmacro th-common mm-url gnus gnus-ems nnheader
> gnus-util netrc mail-utils wid-edit url-http tls url url-proxy
> url-privacy url-expand url-methods url-history mailcap url-auth
> mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums time-date url-cookie
> url-util url-parse url-gw url-vars mm-util mail-prsvr windmove
> disp-table swank-clojure-autoloads advice help-fns advice-preload
> clojure-mode-autoloads slime-repl-autoloads slime-autoloads package
> reporter site-gentoo w3m-load bbdb-autoloads bbdb regexp-opt timezone
> tex-site auto-loads tooltip ediff-hook vc-hooks lisp-float-type mwheel
> x-win x-dnd font-setting tool-bar dnd fontset image fringe lisp-mode
> register page menu-bar rfn-eshadow timer select scroll-bar mldrag 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
> loaddefs button minibuffer faces cus-face files text-properties overlay
> md5 base64 format env code-pages mule custom widget
> hashtable-print-readable backquote make-network-process dbusbind
> system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs)