[contextualprocess] Document command lists

- Show that a command list is also allowed, not just a single
   command. Refer to shellprocess for more documentation.

src/modules/contextualprocess/contextualprocess.conf

@@ -4,18 +4,18 @@
 # When a given global value (string) equals a given value, then
 # the associated command is executed.
 #
-# Configuration consists of keys for global variable names,
-# and the sub-keys are strings to compare to the variable's value.
-# If the variable has that particular value, the corresponding
-# value is executed as a shell command in the target environment.
-#
-# You can check for an empty value with "".
-#
 # The special configuration key *dontChroot* specifies whether
 # the commands are run in the target system (default, value *false*),
 # or in the host system. This key is not used for comparisons
 # with global configuration values.
 #
+# Configuration consists of keys for global variable names (except
+# *dontChroot*), and the sub-keys are strings to compare to the
+# variable's value. If the variable has that particular value, the
+# corresponding value (script) is executed.
+#
+# You can check for an empty value with "".
+#
 # If a command starts with "-" (a single minus sign), then the
 # return value of the command following the - is ignored; otherwise,
 # a failing command will abort the installation. This is much like
@@ -31,6 +31,8 @@
 ---
 dontChroot: false
 firmwareType:
-    efi:    "-pkg remove efi-firmware"
+    efi:
+        -   "-pkg remove efi-firmware"
+        -   "-mkinitramfsrd -abgn"
     bios:   "-pkg remove bios-firmware"
     "":     "/bin/false no-firmware-type-set"

src/modules/shellprocess/shellprocess.conf

@@ -12,6 +12,11 @@
 # return value of the command following the - is ignored; otherwise,
 # a failing command will abort the installation. This is much like
 # make's use of - in a command.
+#
+# The value of *script* may be:
+#   - a single string; this is one command that is executed.
+#   - a list of strings; these are executed one at a time, by
+#     separate shells (/bin/sh -c is invoked for each command).
 ---
 dontChroot: false
 script: