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(icomplete-completions): Use an explicit variable

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`icomplete-prospects-length', obviating the need to use an
apparently faulty throw/catch arrangement.
This commit is contained in:
Gerd Moellmann 1999-11-21 13:44:26 +00:00
parent a88d2801b8
commit 1934dbf4c9
2 changed files with 78 additions and 94 deletions
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16
lisp/ChangeLog
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@ -1,3 +1,9 @@
1999-11-21 Ken Manheimer <klm@python.org>
* icomplete.el (icomplete-completions): Use an explicit variable
`icomplete-prospects-length', obviating the need to use an
apparently faulty throw/catch arrangement.
1999-11-21 Eli Zaretskii <eliz@is.elta.co.il>
* term/internal.el (IT-display-table-setup): Don't overstep
@ -10,13 +16,13 @@
1999-11-19 Stefan Monnier <monnier@cs.yale.edu>
* scroll-bar.el (scroll-bar-toolkit-scroll): add handling of the `ratio'
event for Xaw and Xaw3d(without arrows) scrollbars.
* scroll-bar.el (scroll-bar-toolkit-scroll): Add handling of the
`ratio' event for Xaw and Xaw3d(without arrows) scrollbars.
* files.el (auto-mode-alist): add patterns for diff-mode.
* files.el (auto-mode-alist): Add patterns for diff-mode.
* complete.el (PC-do-complete-and-exit): use minibuffer-prompt-end to
detect an empty prompt.
* complete.el (PC-do-complete-and-exit): Use minibuffer-prompt-end
to detect an empty prompt.
1999-11-18 Dave Love <fx@gnu.org>

156
lisp/icomplete.el
View File

@ -1,10 +1,11 @@
;;; icomplete.el --- minibuffer completion incremental feedback
;;;_+ icomplete.el - minibuffer completion incremental feedback
;; Copyright (C) 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
;; Author: Ken Manheimer <klm@python.org>
;; Maintainer: Ken Manheimer <klm@python.org>
;; Created: Mar 1993 klm@nist.gov - first release to usenet
;; Author: Ken Manheimer <klm@i.am>
;; Maintainer: Ken Manheimer <klm@i.am>
;; Created: Mar 1993 Ken Manheimer, klm@nist.gov - first release to usenet
;; Last update: Ken Manheimer <klm@i.am>, 11/18/1999.
;; Keywords: help, abbrev
;; This file is part of GNU Emacs.
@ -38,19 +39,14 @@
;; customize icomplete setup for interoperation with other
;; minibuffer-oriented packages.
;; To activate icomplete mode, simply add the following to .emacs:
;; (icomplete-mode)
;; You can subsequently deactivate it by invoking the function
;; icomplete-mode with a negative prefix-arg (C-U -1 ESC-x
;; icomplete-mode). Also, you can prevent activation of the mode
;; during package load by first setting the variable `icomplete-mode'
;; to nil. Icompletion can be enabled any time after the package is
;; loaded by invoking icomplete-mode without a prefix arg.
;; This version of icomplete runs on Emacs 19.18 and later. (It
;; depends on the incorporation of minibuffer-setup-hook.) The elisp
;; archives, ftp://archive.cis.ohio-state.edu/pub/gnu/emacs/elisp-archive,
;; probably still has a version that works in GNU Emacs v18.
;; To activate icomplete mode, load the package and use the
;; `icomplete-mode' function. You can subsequently deactivate it by
;; invoking the function icomplete-mode with a negative prefix-arg
;; (C-U -1 ESC-x icomplete-mode). Also, you can prevent activation of
;; the mode during package load by first setting the variable
;; `icomplete-mode' to nil. Icompletion can be enabled any time after
;; the package is loaded by invoking icomplete-mode without a prefix
;; arg.
;; Thanks to everyone for their suggestions for refinements of this
;; package. I particularly have to credit Michael Cook, who
@ -72,9 +68,8 @@
:prefix "icomplete-"
:group 'minibuffer)
;;;_* User Customization variables
(defcustom icomplete-mode nil
"Toggle incremental minibuffer completion.
"*Toggle incremental minibuffer completion.
As text is typed into the minibuffer, prospective completions are indicated
in the minibuffer.
Setting this variable directly does not take effect;
@ -86,6 +81,12 @@ use either \\[customize] or the function `icomplete-mode'."
:group 'icomplete
:require 'icomplete)
;;;_* User Customization variables
(defcustom icomplete-prospects-length 80
"*Length of string displaying the prospects."
:type 'integer
:group 'icomplete)
(defcustom icomplete-compute-delay .3
"*Completions-computation stall, used only with large-number
completions - see `icomplete-delay-completions-threshold'."
@ -215,7 +216,9 @@ Usually run by inclusion in `minibuffer-setup-hook'."
(run-hooks 'icomplete-post-command-hook)))
nil t)
(run-hooks 'icomplete-minibuffer-setup-hook))))
;
;;;_* Completion
;;;_ > icomplete-tidy ()
@ -306,76 +309,51 @@ are exhibited within the square braces.)"
(let ((comps (all-completions name candidates predicate))
; "-determined" - only one candidate
(open-bracket-determined (if require-match "(" "["))
(close-bracket-determined (if require-match ")" "]"))
(close-bracket-determined (if require-match ")" "]")))
;; `concat'/`mapconcat' is the slow part. With the introduction of
;; `icomplete-prospects-length', there is no need for `catch'/`throw'.
(if (null comps) (format " %sNo matches%s"
open-bracket-determined
close-bracket-determined)
(let* ((most-try (try-completion name (mapcar (function list) comps)))
(most (if (stringp most-try) most-try (car comps)))
(most-len (length most))
(determ (and (> most-len (length name))
(concat open-bracket-determined
(substring most (length name))
close-bracket-determined)))
(open-bracket-prospects "{")
(close-bracket-prospects "}")
;"-prospects" - more than one candidate
(open-bracket-prospects "{")
(close-bracket-prospects "}")
)
(catch 'input
(cond ((null comps) (format " %sNo matches%s"
open-bracket-determined
close-bracket-determined))
((null (cdr comps)) ;one match
(concat (if (and (> (length (car comps))
(length name)))
(concat open-bracket-determined
(substring (car comps) (length name))
close-bracket-determined)
"")
" [Matched"
(let ((keys (and icomplete-show-key-bindings
(commandp (intern-soft (car comps)))
(icomplete-get-keys (car comps)))))
(if keys
(concat "; " keys)
""))
"]"))
(t ;multiple matches
(let* ((most
(try-completion name candidates
(and predicate
;; Wrap predicate in impatience - ie,
;; `throw' up when pending input is
;; noticed. Adds some overhead to
;; predicate, but should be worth it.
(function
(lambda (item)
(if (input-pending-p)
(throw 'input "")
(apply predicate
item nil)))))))
(most-len (length most))
most-is-exact
(alternatives
(substring
(apply (function concat)
(mapcar (function
(lambda (com)
(if (input-pending-p)
(throw 'input ""))
(if (= (length com) most-len)
;; Most is one exact match,
;; note that and leave out
;; for later indication:
(progn
(setq most-is-exact t)
())
(concat ","
(substring com
most-len)))))
comps))
1)))
(concat (and (> most-len (length name))
(concat open-bracket-determined
(substring most (length name))
close-bracket-determined))
open-bracket-prospects
(if most-is-exact
;; Add a ',' at the front to indicate "complete but
;; not unique":
(concat "," alternatives)
alternatives)
close-bracket-prospects)))))))
(prospects-len 0)
prospects most-is-exact comp)
(if (eq most-try t)
(setq prospects nil)
(while (and comps (< prospects-len icomplete-prospects-length))
(setq comp (substring (car comps) most-len)
comps (cdr comps))
(cond ((string-equal comp "") (setq most-is-exact t))
((member comp prospects))
(t (setq prospects (cons comp prospects)
prospects-len (+ (length comp) 1 prospects-len))))))
(if prospects
(concat determ
open-bracket-prospects
(and most-is-exact ",")
(mapconcat 'identity
(sort prospects (function string-lessp))
",")
(and comps ",...")
close-bracket-prospects)
(concat determ
" [Matched"
(let ((keys (and icomplete-show-key-bindings
(commandp (intern-soft most))
(icomplete-get-keys most))))
(if keys
(concat "; " keys)
""))
"]"))))))
(if icomplete-mode
(icomplete-mode 1))