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Don't associate ERC modules with undefined groups

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* lisp/erc/erc-capab.el: Add property crutch to help ERC find module's
Custom group.
* lisp/erc/erc-common.el (erc--find-group): Add new function, a helper
for finding an existing ERC module's Custom group based on
`define-erc-module' params.  Prefer `group-documentation' as a
sentinel over symbol properties owned by Customize because they might
not be present if the group isn't yet associated with any custom
variables.
(define-erc-module): Set `:group' keyword value more accurately,
falling back to `erc' when no associated group has been defined.
* test/lisp/erc/erc-tests.el (erc--find-group, erc--find-group--real):
New tests.
(define-erc-module--global, define-erc-module--local): Expect the
`:group' keyword to be the unevaluated `erc--find-group'
form.  (Bug#60935.)
This commit is contained in:
F. Jason Park 2023-01-14 19:05:59 -08:00
parent 2d876a4ca9
commit 0d3ccdbde4
3 changed files with 69 additions and 7 deletions
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1
lisp/erc/erc-capab.el
View File

@ -89,6 +89,7 @@ character not found in IRC nicknames to avoid confusion."
;;; Define module:
;;;###autoload(autoload 'erc-capab-identify-mode "erc-capab" nil t)
(put 'capab-identify 'erc-group 'erc-capab)
(define-erc-module capab-identify nil
"Handle dancer-ircd's CAPAB IDENTIFY-MSG and IDENTIFY-CTCP."
;; append so that `erc-server-parameters' is already set by `erc-server-005'

38
lisp/erc/erc-common.el
View File

@ -118,6 +118,37 @@
(setq ,mode ,val)
,@body)))))
;; This is a migration helper that determines a module's `:group'
;; keyword argument from its name or alias. A (global) module's minor
;; mode variable appears under the group's Custom menu. Like
;; `erc--normalize-module-symbol', it must run when the module's
;; definition (rather than that of `define-erc-module') is expanded.
;; For corner cases in which this fails or the catch-all of `erc' is
;; more inappropriate, (global) modules can declare a top-level
;;
;; (put 'foo 'erc-group 'erc-bar)
;;
;; where `erc-bar' is the group and `foo' is the normalized module.
;; Do this *before* the module's definition. If `define-erc-module'
;; ever accepts arbitrary keywords, passing an explicit `:group' will
;; obviously be preferable.
(defun erc--find-group (&rest symbols)
(catch 'found
(dolist (s symbols)
(let* ((downed (downcase (symbol-name s)))
(known (intern-soft (concat "erc-" downed))))
(when (and known
(or (get known 'group-documentation)
(rassq known custom-current-group-alist)))
(throw 'found known))
(when (setq known (intern-soft (concat "erc-" downed "-mode")))
(when-let ((found (custom-group-of-mode known)))
(throw 'found found))))
(when-let ((found (get (erc--normalize-module-symbol s) 'erc-group)))
(throw 'found found)))
'erc))
(defmacro define-erc-module (name alias doc enable-body disable-body
&optional local-p)
"Define a new minor mode using ERC conventions.
@ -152,7 +183,6 @@ Example:
(declare (doc-string 3) (indent defun))
(let* ((sn (symbol-name name))
(mode (intern (format "erc-%s-mode" (downcase sn))))
(group (intern (format "erc-%s" (downcase sn))))
(enable (intern (format "erc-%s-enable" (downcase sn))))
(disable (intern (format "erc-%s-disable" (downcase sn)))))
`(progn
@ -163,10 +193,8 @@ With a prefix argument ARG, enable %s if ARG is positive,
and disable it otherwise. If called from Lisp, enable the mode
if ARG is omitted or nil.
%s" name name doc)
;; FIXME: We don't know if this group exists, so this `:group' may
;; actually just silence a valid warning about the fact that the var
;; is not associated with any group.
:global ,(not local-p) :group (quote ,group)
:global ,(not local-p)
:group (erc--find-group ',name ,(and alias (list 'quote alias)))
(if ,mode
(,enable)
(,disable)))

37
test/lisp/erc/erc-tests.el
View File

@ -1353,6 +1353,39 @@
;; Default unchanged
(should (equal (erc-migrate-modules erc-modules) erc-modules)))
(ert-deftest erc--find-group ()
;; These two are loaded by default
(should (eq (erc--find-group 'keep-place nil) 'erc))
(should (eq (erc--find-group 'networks nil) 'erc-networks))
;; These are fake
(cl-letf (((get 'erc-bar 'group-documentation) "")
((get 'baz 'erc-group) 'erc-foo))
(should (eq (erc--find-group 'foo 'bar) 'erc-bar))
(should (eq (erc--find-group 'bar 'foo) 'erc-bar))
(should (eq (erc--find-group 'bar nil) 'erc-bar))
(should (eq (erc--find-group 'foo nil) 'erc))
(should (eq (erc--find-group 'fake 'baz) 'erc-foo))))
(ert-deftest erc--find-group--real ()
:tags '(:unstable)
(require 'erc-services)
(require 'erc-stamp)
(require 'erc-sound)
(require 'erc-page)
(require 'erc-join)
(require 'erc-capab)
(require 'erc-pcomplete)
(should (eq (erc--find-group 'services 'nickserv) 'erc-services))
(should (eq (erc--find-group 'stamp 'timestamp) 'erc-stamp))
(should (eq (erc--find-group 'sound 'ctcp-sound) 'erc-sound))
(should (eq (erc--find-group 'page 'ctcp-page) 'erc-page))
(should (eq (erc--find-group 'autojoin) 'erc-autojoin))
(should (eq (erc--find-group 'pcomplete 'Completion) 'erc-pcomplete))
(should (eq (erc--find-group 'capab-identify) 'erc-capab))
;; No group specified.
(should (eq (erc--find-group 'smiley nil) 'erc))
(should (eq (erc--find-group 'unmorse nil) 'erc)))
(ert-deftest erc--update-modules ()
(let (calls
erc-modules
@ -1453,7 +1486,7 @@ and disable it otherwise. If called from Lisp, enable the mode
if ARG is omitted or nil.
Some docstring"
:global t
:group 'erc-mname
:group (erc--find-group 'mname 'malias)
(if erc-mname-mode
(erc-mname-enable)
(erc-mname-disable)))
@ -1499,7 +1532,7 @@ and disable it otherwise. If called from Lisp, enable the mode
if ARG is omitted or nil.
Some docstring"
:global nil
:group 'erc-mname
:group (erc--find-group 'mname nil)
(if erc-mname-mode
(erc-mname-enable)
(erc-mname-disable)))