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;;; erc-hecomplete.el --- Provides Nick name completion for ERC
;; Copyright (C) 2001-2002, 2004, 2006-2021 Free Software Foundation,
;; Inc.
;; Author: Alex Schroeder <alex@gnu.org>
;; URL: https://www.emacswiki.org/cgi-bin/wiki.pl?ErcCompletion
;; Obsolete-since: 24.1
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This file is considered obsolete. It is recommended to use
;; completion from erc-pcomplete instead.
;; This file is based on hippie-expand, while the new file is based on
;; pcomplete.
;;; Code:
(require 'erc)
(require 'erc-match); for erc-pals
(require 'hippie-exp); for the hippie expand stuff
;;;###autoload (autoload 'erc-hecomplete-mode "erc-hecomplete" nil t)
(define-erc-module hecomplete nil
"Complete nick at point."
((add-hook 'erc-complete-functions 'erc-hecomplete))
((remove-hook 'erc-complete-functions 'erc-hecomplete)))
(defun erc-hecomplete ()
"Complete nick at point.
See `erc-try-complete-nick' for more technical info.
This function is obsolete, use `erc-pcomplete' instead."
(interactive)
(let ((hippie-expand-try-functions-list '(erc-try-complete-nick)))
(hippie-expand nil)))
(defgroup erc-hecomplete nil
"Nick completion. It is recommended to use `erc-pcomplete' instead."
:group 'erc)
(defcustom erc-nick-completion 'all
"Determine how the list of nicks is determined during nick completion.
See `erc-complete-nick' for information on how to activate this.
pals: Use `erc-pals'.
all: All channel members.
You may also provide your own function that returns a list of completions.
One example is `erc-nick-completion-exclude-myself',
or you may use an arbitrary lisp expression."
:type '(choice (const :tag "List of pals" pals)
(const :tag "All channel members" all)
(const :tag "All channel members except yourself"
erc-nick-completion-exclude-myself)
(repeat :tag "List" (string :tag "Nick"))
function
sexp)
:group 'erc-hecomplete)
(defcustom erc-nick-completion-ignore-case t
"Non-nil means don't consider case significant in nick completion.
Case will be automatically corrected when non-nil.
For instance if you type \"dely TAB\" the word completes and changes to
\"delYsid\"."
:group 'erc-hecomplete
:type 'boolean)
(defun erc-nick-completion-exclude-myself ()
"Get a list of all the channel members except you.
This function returns a list of all the members in the channel, except
your own nick. This way if you're named foo and someone is called foobar,
typing \"f o TAB\" will directly give you foobar. Use this with
`erc-nick-completion'."
(remove
(erc-current-nick)
(erc-get-channel-nickname-list)))
(defcustom erc-nick-completion-postfix ": "
"When `erc-complete' is used in the first word after the prompt,
add this string when a unique expansion was found."
:group 'erc-hecomplete
:type 'string)
(defun erc-command-list ()
"Return a list of strings of the defined user commands."
(let ((case-fold-search nil))
(mapcar (lambda (x)
(concat "/" (downcase (substring (symbol-name x) 8))))
(apropos-internal "erc-cmd-[A-Z]+"))))
(defun erc-try-complete-nick (old)
"Complete nick at point.
This is a function to put on `hippie-expand-try-functions-list'.
Then use \\[hippie-expand] to expand nicks.
The type of completion depends on `erc-nick-completion'."
(try-complete-erc-nick old (cond ((eq erc-nick-completion 'pals) erc-pals)
((eq erc-nick-completion 'all)
(append
(erc-get-channel-nickname-list)
(erc-command-list)))
((functionp erc-nick-completion)
(funcall erc-nick-completion))
(t erc-nick-completion))))
(defvar try-complete-erc-nick-window-configuration nil
"The window configuration for `try-complete-erc-nick'.
When called the first time, a window config is stored here,
and when completion is done, the window config is restored
from here. See `try-complete-erc-nick-restore' and
`try-complete-erc-nick'.")
(defun try-complete-erc-nick-restore ()
"Restore window configuration."
(if (not try-complete-erc-nick-window-configuration)
(when (get-buffer "*Completions*")
(delete-windows-on "*Completions*"))
(set-window-configuration
try-complete-erc-nick-window-configuration)
(setq try-complete-erc-nick-window-configuration nil)))
(defun try-complete-erc-nick (old completions)
"Try to complete current word depending on `erc-try-complete-nick'.
The argument OLD has to be nil the first call of this function, and t
for subsequent calls (for further possible completions of the same
string). It returns t if a new completion is found, nil otherwise. The
second argument COMPLETIONS is a list of completions to use. Actually,
it is only used when OLD is nil. It will be copied to `he-expand-list'
on the first call. After that, it is no longer used.
Window configurations are stored in
`try-complete-erc-nick-window-configuration'."
(let (expansion
final
(alist (if (consp (car completions))
completions
(mapcar (lambda (s)
(if (and (erc-complete-at-prompt)
(and (not (= (length s) 0))
(not (eq (elt s 0) ?/))))
(list (concat s erc-nick-completion-postfix))
(list (concat s " "))))
completions))) ; make alist if required
(completion-ignore-case erc-nick-completion-ignore-case))
(he-init-string (he-dabbrev-beg) (point))
;; If there is a string to complete, complete it using alist.
;; expansion is the possible expansion, or t. If expansion is t
;; or if expansion is the "real" thing, we are finished (final is
;; t). Take care -- expansion can also be nil!
(unless (string= he-search-string "")
(setq expansion (try-completion he-search-string alist)
final (or (eq t expansion)
(and expansion
(eq t (try-completion expansion alist))))))
(cond ((not expansion)
;; There is no expansion at all.
(try-complete-erc-nick-restore)
(he-reset-string)
nil)
((eq t expansion)
;; The user already has the correct expansion.
(try-complete-erc-nick-restore)
(he-reset-string)
t)
((and old (string= expansion he-search-string))
;; This is the second time around and nothing changed,
;; ie. the user tried to expand something incomplete
;; without making a choice -- hitting TAB twice, for
;; example.
(try-complete-erc-nick-restore)
(he-reset-string)
nil)
(final
;; The user has found the correct expansion.
(try-complete-erc-nick-restore)
(he-substitute-string expansion)
t)
(t
;; We found something but we are not finished. Show a
;; completions buffer. Substitute what we found and return
;; t.
(setq try-complete-erc-nick-window-configuration
(current-window-configuration))
(with-output-to-temp-buffer "*Completions*"
(display-completion-list (all-completions he-search-string alist)))
(he-substitute-string expansion)
t))))
(defun erc-at-beginning-of-line-p (point &optional bol-func)
(save-excursion
(funcall (or bol-func
'erc-bol))
(equal point (point))))
(defun erc-complete-at-prompt ()
"Return t if point is directly after `erc-prompt' when doing completion."
(erc-at-beginning-of-line-p (he-dabbrev-beg)))
(provide 'erc-hecomplete)
;;; erc-hecomplete.el ends here
;;
;; Local Variables:
;; indent-tabs-mode: t
;; tab-width: 8
;; End:
|
