Update for Doxygen 1.8.

* skeletonmm/doc/reference/Doxyfile.in: Update with Doxygen 1.8.3.
doxygen -s -u Doxyfile.in
* util/post-process.pl: Don't collapse almost all multiple spaces to a
single space. It distorts the formatting of @code blocks, even more so with
Doxygen 1.8.
* util/doxygen.css: Add rules for div.fragment and div.line. Used for @code
blocks by Doxygen 1.8.

3 files changed, 57 insertions, 9 deletions

diff --git a/skeletonmm/doc/reference/Doxyfile.in b/skeletonmm/doc/reference/Doxyfile.in
index 5dbb5dd..af36b3a 100644
--- a/skeletonmm/doc/reference/Doxyfile.in
+++ b/skeletonmm/doc/reference/Doxyfile.in
@@ -1,4 +1,4 @@
-# Doxyfile 1.6.1
+# Doxyfile 1.8.3
 # @configure_input@
 
 #---------------------------------------------------------------------------
@@ -7,6 +7,8 @@
 DOXYFILE_ENCODING      = UTF-8
 PROJECT_NAME           = @PACKAGE_NAME@
 PROJECT_NUMBER         = @PACKAGE_VERSION@
+PROJECT_BRIEF          =
+PROJECT_LOGO           =
 OUTPUT_DIRECTORY       = reference
 CREATE_SUBDIRS         = NO
 OUTPUT_LANGUAGE        = English
@@ -31,26 +33,33 @@ MULTILINE_CPP_IS_BRIEF = NO
 INHERIT_DOCS           = YES
 SEPARATE_MEMBER_PAGES  = NO
 TAB_SIZE               = 8
-ALIASES                = "newin{2}=\xrefitem since_\1_\2 \"Since @PACKAGE_NAME@ \1.\2\" \"New API in @PACKAGE_NAME@ \1.\2\""
-ALIASES               += "newin{3}=\xrefitem since_\1_\2_\3 \"Since @PACKAGE_NAME@ \1.\2.\3\" \"New API in @PACKAGE_NAME@ \1.\2.\3\""
+ALIASES                = "newin{2}=\xrefitem since_\1_\2 \"Since @PACKAGE_NAME@ \1.\2\" \"New API in @PACKAGE_NAME@ \1.\2\"" \
+                         "newin{3}=\xrefitem since_\1_\2_\3 \"Since @PACKAGE_NAME@ \1.\2.\3\" \"New API in @PACKAGE_NAME@ \1.\2.\3\""
+TCL_SUBST              =
 OPTIMIZE_OUTPUT_FOR_C  = NO
 OPTIMIZE_OUTPUT_JAVA   = NO
 OPTIMIZE_FOR_FORTRAN   = NO
 OPTIMIZE_OUTPUT_VHDL   = NO
 EXTENSION_MAPPING      =
+MARKDOWN_SUPPORT       = YES
+AUTOLINK_SUPPORT       = YES
 BUILTIN_STL_SUPPORT    = NO
 CPP_CLI_SUPPORT        = NO
 SIP_SUPPORT            = NO
 IDL_PROPERTY_SUPPORT   = YES
 DISTRIBUTE_GROUP_DOC   = NO
 SUBGROUPING            = YES
+INLINE_GROUPED_CLASSES = NO
+INLINE_SIMPLE_STRUCTS  = NO
 TYPEDEF_HIDES_STRUCT   = NO
 SYMBOL_CACHE_SIZE      = 0
+LOOKUP_CACHE_SIZE      = 0
 #---------------------------------------------------------------------------
 # Build related configuration options
 #---------------------------------------------------------------------------
 EXTRACT_ALL            = YES
 EXTRACT_PRIVATE        = NO
+EXTRACT_PACKAGE        = NO
 EXTRACT_STATIC         = NO
 EXTRACT_LOCAL_CLASSES  = NO
 EXTRACT_LOCAL_METHODS  = NO
@@ -63,12 +72,14 @@ INTERNAL_DOCS          = NO
 CASE_SENSE_NAMES       = YES
 HIDE_SCOPE_NAMES       = NO
 SHOW_INCLUDE_FILES     = YES
+FORCE_LOCAL_INCLUDES   = NO
 INLINE_INFO            = YES
 SORT_MEMBER_DOCS       = YES
 SORT_BRIEF_DOCS        = NO
 SORT_MEMBERS_CTORS_1ST = YES
 SORT_GROUP_NAMES       = YES
 SORT_BY_SCOPE_NAME     = YES
+STRICT_PROTO_MATCHING  = NO
 GENERATE_TODOLIST      = NO
 GENERATE_TESTLIST      = NO
 GENERATE_BUGLIST       = NO
@@ -76,11 +87,11 @@ GENERATE_DEPRECATEDLIST= YES
 ENABLED_SECTIONS       =
 MAX_INITIALIZER_LINES  = 2
 SHOW_USED_FILES        = NO
-SHOW_DIRECTORIES       = NO
 SHOW_FILES             = NO
 SHOW_NAMESPACES        = YES
 FILE_VERSION_FILTER    =
 LAYOUT_FILE            =
+CITE_BIB_FILES         =
 #---------------------------------------------------------------------------
 # configuration options related to warning and progress messages
 #---------------------------------------------------------------------------
@@ -118,6 +129,8 @@ IMAGE_PATH             =
 INPUT_FILTER           =
 FILTER_PATTERNS        =
 FILTER_SOURCE_FILES    = NO
+FILTER_SOURCE_PATTERNS =
+USE_MDFILE_AS_MAINPAGE =
 #---------------------------------------------------------------------------
 # configuration options related to source browsing
 #---------------------------------------------------------------------------
@@ -144,11 +157,19 @@ HTML_FILE_EXTENSION    = .html
 HTML_HEADER            =
 HTML_FOOTER            =
 HTML_STYLESHEET        = "$(MMDOCTOOLDIR)/doxygen.css"
-HTML_ALIGN_MEMBERS     = YES
+HTML_EXTRA_STYLESHEET  =
+HTML_EXTRA_FILES       =
+HTML_COLORSTYLE_HUE    = 220
+HTML_COLORSTYLE_SAT    = 100
+HTML_COLORSTYLE_GAMMA  = 80
+HTML_TIMESTAMP         = YES
 HTML_DYNAMIC_SECTIONS  = NO
+HTML_INDEX_NUM_ENTRIES = 100
 GENERATE_DOCSET        = NO
 DOCSET_FEEDNAME        = "Doxygen generated docs"
 DOCSET_BUNDLE_ID       = org.doxygen.Project
+DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
+DOCSET_PUBLISHER_NAME  = Publisher
 GENERATE_HTMLHELP      = NO
 CHM_FILE               =
 HHC_LOCATION           =
@@ -164,13 +185,25 @@ QHP_CUST_FILTER_NAME   =
 QHP_CUST_FILTER_ATTRS  =
 QHP_SECT_FILTER_ATTRS  =
 QHG_LOCATION           =
+GENERATE_ECLIPSEHELP   = NO
+ECLIPSE_DOC_ID         = org.doxygen.Project
 DISABLE_INDEX          = NO
-ENUM_VALUES_PER_LINE   = 1
 GENERATE_TREEVIEW      = NO
-USE_INLINE_TREES       = NO
+ENUM_VALUES_PER_LINE   = 1
 TREEVIEW_WIDTH         = 250
+EXT_LINKS_IN_WINDOW    = NO
 FORMULA_FONTSIZE       = 10
+FORMULA_TRANSPARENT    = YES
+USE_MATHJAX            = NO
+MATHJAX_FORMAT         = HTML-CSS
+MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
+MATHJAX_EXTENSIONS     =
 SEARCHENGINE           = NO
+SERVER_BASED_SEARCH    = NO
+EXTERNAL_SEARCH        = NO
+SEARCHENGINE_URL       =
+SEARCHDATA_FILE        = searchdata.xml
+EXTRA_SEARCH_MAPPINGS  =
 #---------------------------------------------------------------------------
 # configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
@@ -182,11 +215,13 @@ COMPACT_LATEX          = NO
 PAPER_TYPE             = a4wide
 EXTRA_PACKAGES         =
 LATEX_HEADER           =
+LATEX_FOOTER           =
 PDF_HYPERLINKS         = YES
 USE_PDFLATEX           = YES
 LATEX_BATCHMODE        = NO
 LATEX_HIDE_INDICES     = NO
 LATEX_SOURCE_CODE      = NO
+LATEX_BIB_STYLE        = plain
 #---------------------------------------------------------------------------
 # configuration options related to the RTF output
 #---------------------------------------------------------------------------
@@ -269,6 +304,7 @@ CLASS_DIAGRAMS         = YES
 MSCGEN_PATH            =
 HIDE_UNDOC_RELATIONS   = NO
 HAVE_DOT               = YES
+DOT_NUM_THREADS        = 0
 DOT_FONTNAME           = Sans
 DOT_FONTSIZE           = 10
 DOT_FONTPATH           =
@@ -276,6 +312,7 @@ CLASS_GRAPH            = YES
 COLLABORATION_GRAPH    = NO
 GROUP_GRAPHS           = NO
 UML_LOOK               = NO
+UML_LIMIT_NUM_FIELDS   = 10
 TEMPLATE_RELATIONS     = NO
 INCLUDE_GRAPH          = NO
 INCLUDED_BY_GRAPH      = NO
@@ -284,8 +321,10 @@ CALLER_GRAPH           = NO
 GRAPHICAL_HIERARCHY    = YES
 DIRECTORY_GRAPH        = NO
 DOT_IMAGE_FORMAT       = png
+INTERACTIVE_SVG        = NO
 DOT_PATH               =
 DOTFILE_DIRS           =
+MSCFILE_DIRS           =
 DOT_GRAPH_MAX_NODES    = 50
 MAX_DOT_GRAPH_DEPTH    = 0
 DOT_TRANSPARENT        = NO
diff --git a/util/doc-postprocess.pl b/util/doc-postprocess.pl
index 2fbea7c..6630a91 100644
--- a/util/doc-postprocess.pl
+++ b/util/doc-postprocess.pl
@@ -110,7 +110,6 @@ foreach my $filename (map(bsd_glob($_, GLOB_NOSORT), @ARGV))
     s/—/—/g;
     s/–/–/g;
     s/ *  */ /g;
-    s/(?<=\S)\s{2,}/ /g;
   }
 
   # write the whole buffer back
diff --git a/util/doxygen.css b/util/doxygen.css
index 3e7b3f6..80d987e 100644
--- a/util/doxygen.css
+++ b/util/doxygen.css
@@ -94,13 +94,23 @@ code, .fragment {
   font-family: monospace, fixed;
 }
 
-pre.fragment {
+pre.fragment, div.fragment {
   background-color: #EEEEFF;
   border: 1px solid #AAAAFF;
   padding: 0.5em;
   margin: 0.375em 0.75em 0.375em 0.2em;
 }
 
+div.fragment > pre.fragment {
+  border-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+div.line {
+  white-space: pre;
+}
+
 div.ah {
   background-color: #000000;
   color: #FFFFFF;