Minor stylistic Boost Jam & Boost Build module changes.

[SVN r48301]

src/build-system.jam

@@ -305,7 +305,7 @@ local rule load-configuration-files
     if $(uq)
     {
         test-config = $(uq) ;
-    }    
+    }
     if $(test-config)
     {
         local where =
@@ -366,7 +366,8 @@ local rule load-configuration-files
 
                 if $(.debug-config)
                 {
-                    ECHO "notice: Loading explicitly specified user configuration file:" ;
+                    ECHO "notice: Loading explicitly specified user"
+                        "configuration file:" ;
                     ECHO "    $(user-config)" ;
                 }
 
@@ -414,7 +415,7 @@ local rule process-explicit-toolset-requests
 
         # If the toolset is not known, configure it now.
         local known ;
-        if $(toolset) in [ feature.values <toolset>  ]
+        if $(toolset) in [ feature.values <toolset> ]
         {
             known = true ;
         }
@@ -423,6 +424,14 @@ local rule process-explicit-toolset-requests
         {
             known = ;
         }
+        # TODO: we should do 'using $(toolset)' in case no version has been
+        # specified and there are no versions defined for the given toolset to
+        # allow the toolset to configure its default version. For this we need
+        # to know how to detect whether a given toolset has any versions
+        # defined. An alternative would be to do this whenever version is not
+        # specified but that would require that toolsets correctly handle the
+        # case when their default version is configured multiple times which
+        # should be checked for all existing toolsets first.
 
         if ! $(known)
         {
@@ -616,7 +625,7 @@ local rule should-clean-project ( project )
     local virtual-targets ;
     local actual-targets ;
 
-    
+
     # Process each target specified on the command-line and convert it into
     # internal Boost Build target objects. Detect special clean target. If no
     # main Boost Build targets were explictly requested use the current project

src/build/alias.jam

@@ -54,7 +54,8 @@ class alias-target-class : basic-target
 
 # Declares the 'alias' target. It will build sources, and return them unaltered.
 #
-rule alias ( name : sources * : requirements * : default-build * : usage-requirements * )
+rule alias ( name : sources * : requirements * : default-build * :
+    usage-requirements * )
 {
     local project = [ project.current ] ;
 

src/build/targets.jam

@@ -1509,10 +1509,10 @@ rule main-target-usage-requirements (
 {
     local project-usage-requirements = [ $(project).get usage-requirements ] ;
 
-    # We don't use 'refine-from-user-input' because:
-    # - I'm not sure if removing of parent's usage requirements makes sense
-    # - refining of usage requirements is not needed, since usage requirements
-    #   are always free.
+    # We do not use 'refine-from-user-input' because:
+    # - I am not sure if removing parent's usage requirements makes sense
+    # - refining usage requirements is not needed, since usage requirements are
+    #   always free.
     local usage-requirements = [ property-set.create-from-user-input
         $(specification)
         : [ $(project).project-module ] [ $(project).get location ] ] ;

src/engine/execnt.c

@@ -517,7 +517,7 @@ int execwait()
             rstat = EXEC_CMD_FAIL;
         else
             rstat = EXEC_CMD_OK;
-        
+
         /* output the action block */
         out_action(
             cmdtab[i].action.size > 0 ? cmdtab[i].action.value : 0,

src/tools/cw.jam

@@ -43,7 +43,7 @@ rule init ( version ? : command * : options * )
         version $(version) ] ;
 
     command = [ common.get-invocation-command cw : mwcc.exe : $(command) :
-      [ default-paths $(version) ] ] ;
+        [ default-paths $(version) ] ] ;
     
     common.handle-options cw : $(condition) : $(command) : $(options) ;
 
@@ -103,7 +103,8 @@ rule init ( version ? : command * : options * )
     }    
 }
 
-rule default-paths ( version ? ) # FIXME
+
+local rule default-paths ( version ? )  # FIXME
 {
    local possible-paths ;
    local ProgramFiles = [ common.get-program-files-dir ] ;