* doc/misc/erc.texi: Add entry for `command-indicator' to Modules
chapter.
* etc/ERC-NEWS: Mention new module `command-indicator'.
* lisp/erc/erc-goodies.el (erc-noncommands-list): Replace the
nonexistent `erc-cmd-SMV' with function `erc-cmd-SAY'.
(erc-noncommands-mode, erc-noncommands-enable,
erc-noncommands-disable): Deprecate this module because it's a no-op.
(erc-command-indicator-face, erc-command-indicator): Migrate from main
library.
(erc-command-indicator-mode, erc-command-indicator-enable,
erc-command-indicator-disable): New module to take the spiritual place
of `noncommands'.
(erc-command-indicator): Move function here from main library, along
with option namesake mentioned above.
(erc-command-indicator-toggle-hidden): New command to toggle echoed
command-line visibility.
(erc--command-indicator-permit-insertion): New function.
(erc--command-indicator-display): New function, a slightly revised
version of the old `erc-display-command' from the main library. Its
only call site was removed back in d1036d288d "backport: erc
bugfixes". However, references were left behind to associated assets,
like `erc-command-indicator', etc. The function was later commented
out in 0c599ee2e2 "* lisp/erc/erc.el: Use `run-hook-with-args` for
`erc-pre-send-functions`", and then removed by a63ed6f78a "Remove
duplicate ERC prompt on reconnect".
* lisp/erc/erc-match.el (erc-match-toggle-hidden-fools): Use new
non-module-specific name for `erc-match--toggle-hidden'.
(erc-match--toggle-hidden): Move to main library for shared use by
other modules.
* lisp/erc/erc.el (erc-hide-prompt): Leave note explaining updated
role.
(erc-command-indicator): Move option and function of same name to
erc-goodies.
(erc-command-indicator-face): Move to erc-goodies.
(erc-modules): Remove module `noncommands' from standard value and
Custom set. Add `command-indicator' to set.
(erc--toggle-hidden): "New" function, a rebranded version of the
utility `erc-match--toggle-hidden' from erc-match.
(erc--send-input-lines): Accommodate modules wanting alternate
insertion functions.
(erc-load-irc-script-lines): Account for `erc-command-indicator' no
longer being defined in this library.
* test/lisp/erc/erc-scenarios-base-send-message.el
(erc-scenarios-base-send-message--command-indicator): New test.
* test/lisp/erc/erc-tests.el (erc-tests--modules): Remove
deprecated module `noncommands' from manifest. (Bug#67031)
* lisp/erc/erc.el (erc--send-action-function): New function-valued
variable for locally advising `erc-send-action' so that built-in
modules can elect to handle insertion and sending themselves.
(erc-send-action): Defer to `erc--send-action-function'.
(erc--send-action-perform-ctcp): Isolate the message-sending business
for CTCP ACTIONs that used to reside in `erc-send-action'.
(erc--send-action-display): Isolate the message-insertion business
formerly residing in `erc-send-action' for more granular use. Fix a
minor bug involving inserted representations of CTCP ACTIONs not
having `erc-my-nick-face' applied to the speaker.
(erc--send-action): Perform the same displaying and sending of CTCP
ACTION messages formerly handled by `erc-send-action', but display
messages before sending them.
(erc--current-line-input-split): New variable bound to the post-review
`erc--input-split' object for the extent of display processing. This
mainly benefits slash-command handlers and the utility functions they
employ, such as `erc-send-message'.
(erc-cmd-SAY): Defer to `erc--send-message'.
(erc--send-message-nested-function): New function-valued variable
supporting an internal interface for influencing how
`erc-send-message' inserts and sends prompt input. Some handlers for
slash commands, like /SV, use `erc-send-message' to perform their own
insertion and sending, which is normally the domain of
`erc-send-current-line'. When this happens, modules can't easily
leverage the normal hook-based API to do things like suppress
insertion but allow sending or vice-versa. This variable provides an
internal seam for modules to exert such influence.
(erc-send-message): Behave specially when called by the default
interactive client via `erc-send-current-line' and friends.
(erc--send-message-external): New function to house the former body of
`erc-send-message', for third-party code needing to apply the
traditional behavior.
(erc--send-message-nested): New function for turning arbitrary text,
such as replacement prompt input, into outgoing message text by doing
things like ensuring "send" hooks run and invariants for prompt
markers are preserved.
(erc--make-input-split): New helper function for creating a standard
`erc--input-split' object from a string. This is arguably less
confusing than adding another constructor to the struct definition.
(erc-send-current-line): Bind `erc--current-line-input-split' when
dispatching prompt-input handlers. Use helper `erc--make-input-split'
to initialize working `erc--input-split' state object.
(erc--run-send-hooks): Honor existing `refoldp' slot from
`erc--input-split' object.
(erc--send-input-lines): Convert to generic function to allow modules
control over fundamental insertion and sending operations, which is
necessary for next-generation features, like multiline messages.
(erc-modes): Don't output non-modules. That is, only list actual
modules created via `define-erc-module', and `quote' members of the
resulting list.
* test/lisp/erc/erc-scenarios-base-send-message.el: New test file.
* test/lisp/erc/resources/base/send-message/noncommands.eld: New data
file. (Bug#67031)
