Fixed C++ support in Kate syntax highlighting code. This resolves bug 2455.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 4e55a1cfaa00035481a72f1271aee8954e3053ad)

5 files changed, 56 insertions, 19 deletions

diff --git a/kate/data/CMakeLists.txt b/kate/data/CMakeLists.txt
index ef8e4963c..9bbfc0889 100644
--- a/kate/data/CMakeLists.txt
+++ b/kate/data/CMakeLists.txt
@@ -30,7 +30,7 @@ install( FILES
     asm-dsp56k.xml asm-m68k.xml asn1.xml asp.xml asterisk.xml awk.xml bash.xml
     bibtex.xml bmethod.xml ccss.xml cgis.xml cg.xml changelog.xml chicken.xml
     cisco.xml clipper.xml clojure.xml cmake.xml coffee.xml coldfusion.xml
-    commonlisp.xml component-pascal.xml context.xml crk.xml css.xml
+    commonlisp.xml component-pascal.xml context.xml cpp.xml crk.xml css.xml
     cs.xml cue.xml curry.xml c.xml ddoc.xml debianchangelog.xml debiancontrol.xml
     desktop.xml diff.xml djangotemplate.xml dockerfile.xml dosbat.xml dot.xml
     doxygenlua.xml doxygen.xml dtd.xml d.xml eiffel.xml email.xml erlang.xml
diff --git a/kate/data/Makefile.am b/kate/data/Makefile.am
index cb17c0787..cd901fc20 100644
--- a/kate/data/Makefile.am
+++ b/kate/data/Makefile.am
@@ -18,8 +18,8 @@ syntaxkate_DATA = language.dtd syntax.template \
     fsharp.xml fstab.xml ftl.xml gap.xml gcc.xml gdb.xml gdl.xml gettext.xml git-ignore.xml \
     git-rebase.xml gitolite.xml glosstex.xml glsl.xml gnuassembler.xml gnuplot.xml go.xml \
     grammar.xml hamlet.xml haml.xml haskell.xml haxe.xml html.xml html-php.xml hunspell-aff.xml \
-    hunspell-dat.xml hunspell-dic.xml hunspell-idx.xml idconsole.xml idl.xml ilerpg.xml \
-    inform.xml ini.xml jam.xml javadoc.xml javascript.xml javascript-php.xml java.xml json.xml \
+    hunspell-dat.xml hunspell-dic.xml hunspell-idx.xml idconsole.xml idl.xml ilerpg.xml inform.xml \
+    ini.xml isocpp.xml jam.xml javadoc.xml javascript.xml javascript-php.xml java.xml json.xml \
     jsp.xml julia.xml j.xml kbasic.xml latex.xml ldif.xml ld.xml less.xml lex.xml lilypond.xml \
     literate-curry.xml literate-haskell.xml logtalk.xml lpc.xml lsl.xml lua.xml m3u.xml \
     m4.xml mab.xml makefile.xml mako.xml mandoc.xml mason.xml mathematica.xml matlab.xml \
diff --git a/kate/data/cpp.xml b/kate/data/cpp.xml
new file mode 100644
index 000000000..1f3bb6a8f
--- /dev/null
+++ b/kate/data/cpp.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE language SYSTEM "language.dtd"
+[
+  <!ENTITY space " ">
+  <!ENTITY separators ",&#59;">
+  <!ENTITY ns_punctuators "!&#37;&space;&amp;()+-/.*&lt;=&gt;?[]{|}~^&separators;">
+]>
+
+<language
+  name="C++" section="Sources" version="1.0" kateversion="2.4" indenter="cstyle" style="C++"
+  mimetype="text/x-c++src;text/x-c++hdr;text/x-chdr"
+  extensions="*.c++;*.cxx;*.cpp;*.cc;*.C;*.h;*.hh;*.H;*.h++;*.hxx;*.hpp;*.hcc"
+  license="LGPL" priority="1" >
+  
+<!--
+  This file is a wrapper from C++ to ISO C++. Its purpose is to provide C++ rules
+  inclusion to existing files that already include the text 
+  <IncludeRules context="##C++" />
+-->
+  
+<highlighting>
+  <contexts>
+    <context attribute="Normal Text" lineEndContext="#stay" name="Normal">
+      <IncludeRules context="##ISO C++" />
+    </context>
+  </contexts>
+</highlighting>
+
+</language>
+
+<!-- kate: indent-width 2; tab-width 2; -->
diff --git a/kate/data/update-files.xml b/kate/data/update-files.xml
index 443deddac..b81ed289e 100644
--- a/kate/data/update-files.xml
+++ b/kate/data/update-files.xml
@@ -38,6 +38,7 @@
 <Definition name="Common Lisp" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/commonlisp.xml" version="1.05-1"/>
 <Definition name="Component-Pascal" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/component-pascal.xml" version="1.05"/>
 <Definition name="ConTeXt" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/context.xml" version="1.1"/>
+<Definition name="C++" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/cpp.xml" version="1.0"/>
 <Definition name="Crack" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/crk.xml" version="1.1"/>
 <Definition name="CSS/PHP" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/css-php.xml" version="2.09"/>
 <Definition name="CSS" url="http://git.trinitydesktop.org/cgit/tdelibs/plain/kate/data/css.xml" version="2.09"/>
diff --git a/kate/part/katehighlight.cpp b/kate/part/katehighlight.cpp
index 49972cce1..82bbdee87 100644
--- a/kate/part/katehighlight.cpp
+++ b/kate/part/katehighlight.cpp
@@ -2438,28 +2438,33 @@ void KateHighlighting::makeContextList()
         buildPrefix=it.key()+':';  // attribute names get prefixed by the names
                                    // of the highlighting definitions they belong to
 
-        if (identifierToUse.isEmpty() )
+        if (identifierToUse.isEmpty())
+        {
           kdDebug(13010)<<"OHOH, unknown highlighting description referenced"<<endl;
-
-        kdDebug(13010)<<"setting ("<<it.key()<<") to loaded"<<endl;
-
-        //mark hl as loaded
-        it=embeddedHls.insert(it.key(),KateEmbeddedHlInfo(true,startctx));
-        //set class member for context 0 offset, so we don't need to pass it around
-        buildContext0Offset=startctx;
-        //parse one hl definition file
-        startctx=addToContextList(identifierToUse,startctx);
-
-        if (noHl) return;  // an error occurred
-
-        base_startctx = startctx;
-        something_changed=true; // something has been loaded
+          kdDebug(13010)<<"Highlighting for ("<<it.key()<<") can not be loaded"<<endl;
+        }
+        else
+        {
+          // Only do this if we have a non-empty identifier
+          kdDebug(13010)<<"setting ("<<it.key()<<") to loaded"<<endl;
+  
+          //mark hl as loaded
+          it=embeddedHls.insert(it.key(),KateEmbeddedHlInfo(true,startctx));
+          //set class member for context 0 offset, so we don't need to pass it around
+          buildContext0Offset=startctx;
+          //parse one hl definition file
+          startctx=addToContextList(identifierToUse,startctx);
+  
+          if (noHl) return;  // an error occurred
+  
+          base_startctx = startctx;
+          something_changed=true; // something has been loaded
+        }
       }
     }
   } while (something_changed);  // as long as there has been another file parsed
                   // repeat everything, there could be newly added embedded hls.
 
-
   // at this point all needed highlighing (sub)definitions are loaded. It's time
   // to resolve cross file  references (if there are any)
   kdDebug(13010)<<"Unresolved contexts, which need attention: "<<unresolvedContextReferences.count()<<endl;