doc: desc. Emacs addons in INSTALL/NEWS

Signed-off-by: Xavier Delaruelle <[email protected]>

Author: xdelaruelle

INSTALL.rst

@@ -400,6 +400,14 @@ is displayed within brackets):
  Directory to host documentation other than man pages like README, license
  file, etc [``DATAROOTDIR/doc``]
 
+.. instopt:: --emacsdatadir=DIR
+
+ Directory to host Emacs addon files [``DATAROOTDIR/emacs/lisp``]
+
+ .. only:: html
+
+    .. versionadded:: 5.6
+
 .. instopt:: --etcdir=DIR
 
  Directory for the executable configuration scripts
@@ -571,6 +579,15 @@ instance :instopt:`--disable-set-manpath<--enable-set-manpath>`):
 
     .. versionadded:: 4.0
 
+.. instopt:: --enable-emacs-addons
+
+ Install the Emacs addon files in the Emacs addons directory defined with the
+ :instopt:`--emacsdatadir` option. (default=yes)
+
+ .. only:: html
+
+    .. versionadded:: 5.6
+
 .. instopt:: --enable-example-modulefiles
 
  Install some modulefiles provided as example in the system modulefiles

NEWS.rst

@@ -155,6 +155,10 @@ Modules 5.6.0 (not yet released)
 * Fix ``use.own`` example modulefile to report when creating local modulefiles
   directory. (fix issue #576)
 * Doc: add manual page for :ref:`envml(1)` command. (fix issue #190)
+* Introduce Emacs addon files to highlight the modulefile syntax. Installation
+  of these files, which is enabled by default, is controlled by the
+  :instopt:`--enable-emacs-addons` and :instopt:`--emacsdatadir` configure
+  options. (contribution from Laurent Besson)
 
 .. _Security policy: https://github.com/envmodules/modules/blob/main/SECURITY.md
 .. _Modules chat room: https://matrix.to/#/#modules:matrix.org