Package: emacs;
Reported by: Stefan Monnier <monnier <at> iro.umontreal.ca>
Date: Tue, 19 Jan 2016 14:21:01 UTC
Severity: wishlist
Found in version 25.1.50
View this message in rfc822 format
From: Stefan Monnier <monnier <at> iro.umontreal.ca> To: 22407 <at> debbugs.gnu.org Subject: bug#22407: Better support external completion tools Date: Tue, 19 Jan 2016 09:19:48 -0500
Package: Emacs
Version: 25.1.50
The current minibuffer.el code is sometimes inconvenient to use for some
packages because the only hooks it provides is for the package to give
the output of `all-completions' and `try-completion' (basically), which
is too limiting when the completion is performed by outside tools which
may provide natively things like "substring" matching.
We should add new methods to the completion-tables (beside the
existing try, all, test, boundaries, and metadata) that allow the
completion table to provide its own version of completion-try-completion
and completion-all-completions.
Clearly, that means that `completion-styles' wouldn't be automatically
honored, so it'd be up to those completion tables to do their best to
try and honor `completion-styles' (or not).
Note: checking (memq 'partial-completion completion-styles) is
fundamentally broken since the user may be using its own
`my-partial-completion' instead. So maybe to avoid this problem and
make it easier for those completion-tables to honor `completion-styles',
we could extend `completion-styles-alist' so that each style can provide
some "description" of the kinds of candidates it would accept. Not sure
what that "description" could look like, tho. Maybe a function which
takes a user-input string and return a regexp, or maybe a simple
predicate taking a user input string and a candidate and returns whether
to keep it or not. Probably neither would work well enough, tho
(e.g. if the completion-table includes candidates that fix typos in the
user-input string).
Stefan
In GNU Emacs 25.1.50.1 (x86_64-unknown-linux-gnu, X toolkit, Xaw scroll bars)
of 2016-01-14 built on pastel
Repository revision: b8d080b21a801fe70170b15b663888d19df4a32d
Windowing system distributor 'The X.Org Foundation', version 11.0.11604000
System Description: Debian GNU/Linux 8.2 (jessie)
Configured using:
'configure -C --enable-checking --enable-check-lisp-object-type
'CFLAGS=-Wall -g3 -Og -Wno-pointer-sign'
PKG_CONFIG_PATH=/home/monnier/lib/pkgconfig'
Configured features:
XPM JPEG TIFF GIF PNG SOUND NOTIFY GNUTLS LIBXML2 FREETYPE XFT ZLIB
TOOLKIT_SCROLL_BARS LUCID X11
Important settings:
value of $LANG: fr_CH.UTF-8
locale-coding-system: utf-8-unix
Major mode: InactiveMinibuffer
Minor modes in effect:
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shell-dirtrack-mode: t
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url-handler-mode: t
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electric-indent-mode: t
mouse-wheel-mode: t
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file-name-shadow-mode: t
global-font-lock-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent messages:
Finding changes in /home/monnier/src/emacs/work/lisp/nxml/nxml-mode.el...done
Hunk already applied
Saving file /home/monnier/src/emacs/work/lisp/nxml/nxml-mode.el...
Wrote /home/monnier/src/emacs/work/lisp/nxml/nxml-mode.el
Finding changes in /home/monnier/src/emacs/work/lisp/nxml/nxml-mode.el...done
Making completion list...
Quit
Making completion list...
Quit
Load-path shadows:
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/home/monnier/src/emacs/elpa/packages/avy/.dir-locals hides /home/monnier/src/emacs/elpa/packages/company/.dir-locals
/home/monnier/src/emacs/elpa/packages/avy/.dir-locals hides /home/monnier/src/emacs/elpa/packages/gnugo/.dir-locals
/home/monnier/src/emacs/elpa/packages/avy/.dir-locals hides /home/monnier/src/emacs/elpa/packages/hydra/.dir-locals
/home/monnier/src/emacs/elpa/packages/avy/.dir-locals hides /home/monnier/src/emacs/elpa/packages/js2-mode/.dir-locals
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-prj hides /home/monnier/src/emacs/work/lisp/progmodes/ada-prj
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-stmt hides /home/monnier/src/emacs/work/lisp/progmodes/ada-stmt
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-mode hides /home/monnier/src/emacs/work/lisp/progmodes/ada-mode
/home/monnier/src/emacs/elpa/packages/ada-mode/ada-xref hides /home/monnier/src/emacs/work/lisp/progmodes/ada-xref
/home/monnier/src/emacs/elpa/packages/avy/.dir-locals hides /home/monnier/src/emacs/work/lisp/gnus/.dir-locals
/home/monnier/src/emacs/elpa/packages/crisp/crisp hides /home/monnier/src/emacs/work/lisp/obsolete/crisp
/home/monnier/src/emacs/elpa/packages/landmark/landmark hides /home/monnier/src/emacs/work/lisp/obsolete/landmark
/home/monnier/src/emacs/work/lisp/emacs-lisp/cl-generic hides /home/monnier/src/emacs/elpa/packages/cl-generic/cl-generic
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Memory information:
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