Restore --help-full option to output all help manuals

This option was removed during conversion to the reStructuredText
documentation.  Restore it.  Process documentation starting at
Help/index.rst so that all manuals are included in the output.

Help/manual/OPTIONS_HELP.txt

@@ -11,6 +11,12 @@
  If a file is specified, the version is written into it.
  |file|
 
+``--help-full [<f>]``
+ Print all help manuals and exit.
+
+ All manuals are printed in a human-readable text format.
+ |file|
+
 ``--help-manual <man> [<f>]``
  Print one help manual and exit.
 

Source/cmDocumentation.cxx

@@ -30,6 +30,8 @@ static const char *cmDocumentationStandardOptions[][2] =
    "Print usage information and exit."},
   {"--version,-version,/V [<f>]",
    "Print version number and exit."},
+  {"--help-full [<f>]",
+   "Print all help manuals and exit."},
   {"--help-manual <man> [<f>]",
    "Print one help manual and exit."},
   {"--help-manual-list [<f>]",
@@ -112,6 +114,8 @@ bool cmDocumentation::PrintDocumentation(Type ht, std::ostream& os)
     {
     case cmDocumentation::Usage:
       return this->PrintDocumentationUsage(os);
+    case cmDocumentation::Full:
+      return this->PrintHelpFull(os);
     case cmDocumentation::OneManual:
       return this->PrintHelpOneManual(os);
     case cmDocumentation::OneCommand:
@@ -364,9 +368,9 @@ bool cmDocumentation::CheckOptions(int argc, const char* const* argv,
       }
     else if(strcmp(argv[i], "--help-full") == 0)
       {
+      help.HelpType = cmDocumentation::Full;
       GET_OPT_ARGUMENT(help.Filename);
-      cmSystemTools::Message("Warning: --help-full no longer supported");
-      return true;
+      this->WarnFormFromFilename(help, result);
       }
     else if(strcmp(argv[i], "--help-html") == 0)
       {
@@ -677,6 +681,12 @@ bool cmDocumentation::PrintFiles(std::ostream& os,
   return found;
 }
 
+//----------------------------------------------------------------------------
+bool cmDocumentation::PrintHelpFull(std::ostream& os)
+{
+  return this->PrintFiles(os, "index");
+}
+
 //----------------------------------------------------------------------------
 bool cmDocumentation::PrintHelpOneManual(std::ostream& os)
 {

Source/cmDocumentation.h

@@ -102,6 +102,7 @@ private:
   bool PrintFiles(std::ostream& os, std::string const& pattern);
 
   bool PrintVersion(std::ostream& os);
+  bool PrintHelpFull(std::ostream& os);
   bool PrintHelpOneManual(std::ostream& os);
   bool PrintHelpOneCommand(std::ostream& os);
   bool PrintHelpOneModule(std::ostream& os);

Source/cmDocumentationFormatter.h

@@ -26,7 +26,7 @@ public:
   /** Types of help provided.  */
   enum Type
   {
-    None, Version, Usage, ListManuals,
+    None, Version, Usage, Full, ListManuals,
     ListCommands, ListModules, ListProperties, ListVariables, ListPolicies,
     OneManual, OneCommand, OneModule, OneProperty, OneVariable, OnePolicy,
     OldCustomModules