Add mini modules bufbar and nickbar to ERC

* doc/misc/erc.texi: Add `bufbar' and `nickbar' to known modules.
Also add `keep-place', which was missing, and remove `bbdb', which is
not part of ERC.  Add new section "Auxiliary Modules" for listing
experimental modules or those typically managed by some other feature.
* erc/ERC-NEWS: Mention new mini modules for libraries
erc-status-sidebar.el and erc-speedbar.el.
* lisp/erc/erc.el (erc-modules): Add `bufbar' and `nickbar' to
selection of offered modules.
* test/lisp/erc/erc-tests.el (erc-tests--modules): Add `bufbar' and
`nickbar'.  (Bug#63595)

1 files changed, 40 insertions, 3 deletions

diff --git a/doc/misc/erc.texi b/doc/misc/erc.texi
index 52a1d57fd45..d59c6d8a6c6 100644
--- a/doc/misc/erc.texi
+++ b/doc/misc/erc.texi
@@ -414,9 +414,10 @@ Set away status automatically
 @item autojoin
 Join channels automatically
 
-@cindex modules, bbdb
-@item bbdb
-Integrate with the Big Brother Database
+@cindex modules, bufbar
+@item bufbar
+List buffers belonging to a connection in a side window; part of
+Custom group @code{erc-status-sidebar}
 
 @cindex modules, button
 @item button
@@ -443,6 +444,10 @@ Launch an identd server on port 8113
 @item irccontrols
 Highlight or remove IRC control characters
 
+@cindex modules, keep-place
+@item keep-place
+Remember your position in buffers
+
 @cindex modules, log
 @item log
 Save buffers in logs
@@ -463,6 +468,11 @@ Detect netsplits
 @item nicks
 Automatically colorize nicks
 
+@cindex modules, nickbar
+@item nickbar
+List participating nicks for the current target buffer in a side
+window; part of Custom group @code{erc-speedbar}
+
 @cindex modules, noncommands
 @item noncommands
 Don't display non-IRC commands after evaluation
@@ -534,6 +544,33 @@ Translate morse code in messages
 
 @end table
 
+@anchor{Auxiliary Modules}
+@subheading Auxiliary Modules
+@cindex auxiliary modules
+
+For various reasons, the following modules aren't currently listed in
+the Custom interface for @code{erc-modules}, but feel free to add them
+explicitly.  They may be managed by another module or considered more
+useful when toggled interactively or just deemed experimental.
+
+@table @code
+
+@cindex modules, fill-wrap
+@item fill-wrap
+Wrap long lines using @code{visual-line-mode}
+
+@cindex modules, keep-place-indicator
+@item keep-place-indicator
+Remember your place in buffers with a visible reminder; activated
+interactively or via something like @code{erc-join-hook}
+
+@cindex modules, services-regain
+@item services-regain
+Automatically ask NickServ to reclaim your nick when reconnecting;
+experimental as of ERC 5.6
+
+@end table
+
 @anchor{Required Modules}
 @subheading Required Modules
 @cindex required modules