move group2ndx and ndx2group to new EXTRA-COMMAND package. update docs.

cmake/CMakeLists.txt

@@ -256,6 +256,7 @@ set(STANDARD_PACKAGES
   DRUDE
   EFF
   ELECTRODE
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

cmake/presets/all_off.cmake

@@ -28,6 +28,7 @@ set(ALL_PACKAGES
   DRUDE
   ELECTRODE
   EFF
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

cmake/presets/all_on.cmake

@@ -30,6 +30,7 @@ set(ALL_PACKAGES
   DRUDE
   ELECTRODE
   EFF
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

cmake/presets/mingw-cross.cmake

@@ -24,6 +24,7 @@ set(WIN_PACKAGES
   DRUDE
   ELECTRODE
   EFF
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

cmake/presets/most.cmake

@@ -26,6 +26,7 @@ set(ALL_PACKAGES
   DRUDE
   EFF
   ELECTRODE
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

cmake/presets/windows.cmake

@@ -22,6 +22,7 @@ set(WIN_PACKAGES
   DRUDE
   EFF
   ELECTRODE
+  EXTRA-COMMAND
   EXTRA-COMPUTE
   EXTRA-DUMP
   EXTRA-FIX

doc/src/Packages_details.rst

@@ -52,6 +52,7 @@ page gives those details.
    * :ref:`DRUDE <PKG-DRUDE>`
    * :ref:`EFF <PKG-EFF>`
    * :ref:`ELECTRODE <PKG-ELECTRODE>`
+   * :ref:`EXTRA-COMMAND <PKG-EXTRA-COMMAND>`
    * :ref:`EXTRA-COMPUTE <PKG-EXTRA-COMPUTE>`
    * :ref:`EXTRA-DUMP <PKG-EXTRA-DUMP>`
    * :ref:`EXTRA-FIX <PKG-EXTRA-FIX>`
@@ -886,6 +887,22 @@ This package has :ref:`specific installation instructions <electrode>` on the
 
 ----------
 
+.. _PKG-EXTRA-COMMAND:
+
+EXTRA-COMMAND package
+---------------------
+
+**Contents:**
+
+Additional compute styles that are less commonly used.
+
+**Supporting info:**
+
+* src/EXTRA-COMMAND: filenames -> commands
+* :doc:`general commands <Commands_all>`
+
+----------
+
 .. _PKG-EXTRA-COMPUTE:
 
 EXTRA-COMPUTE package

doc/src/Packages_list.rst

@@ -158,6 +158,11 @@ whether an extra library is needed to build and use the package:
      - :doc:`fix electrode/conp <fix_electrode>`
      - PACKAGES/electrode
      - no
+   * - :ref:`EXTRA-COMMAND <PKG-EXTRA-COMMAND>`
+     - additional command styles
+     - :doc:`general commands <Commands_all>`
+     - n/a
+     - no
    * - :ref:`EXTRA-COMPUTE <PKG-EXTRA-COMPUTE>`
      - additional compute styles
      - :doc:`compute <compute>`

doc/src/group2ndx.rst

@@ -55,11 +55,12 @@ from the index file and restored.
 Restrictions
 """"""""""""
 
-This command requires that atoms have atom IDs, since this is the
+These commands require that atoms have atom IDs, since this is the
 information that is written to the index file.
 
-These commands are part of the COLVARS package.  They are only
+These commands are part of the EXTRA-COMMAND package.  They are only
-enabled if LAMMPS was built with that package.  See the :doc:`Build package <Build_package>` page for more info.
+enabled if LAMMPS was built with that package.  See the
+:doc:`Build package <Build_package>` page for more info.
 
 Related commands
 """"""""""""""""

src/Makefile

@@ -74,6 +74,7 @@ PACKAGE = \
 	dpd-smooth \
 	drude \
 	eff \
+	extra-command \
 	extra-compute \
 	extra-dump \
 	extra-fix \
@@ -167,6 +168,7 @@ PACKMOST = \
 	dpd-smooth \
 	drude \
 	eff \
+	extra-command \
 	extra-compute \
 	extra-dump \
 	extra-fix \