[vim] Syntax highlighting for C++11 specifiers

Also a GetNamespace() function that's never used, doesn't really work, but that I wrote a while back to help with doc comments. Fun!

vim/after/ftplugin/cpp.vim

@@ -0,0 +1,61 @@
+" cpp.vim
+" Eryn Wells <eryn@erynwells.me
+
+
+syn keyword cppSpecifier constexpr override final noexcept
+
+if version >= 508 || !exists("did_erw_cpp_syntax_inits")
+    if version < 508
+        let did_erw_cpp_syntax_inits = 1
+        command -nargs=+ HiLink hi link <args>
+    else
+        command -nargs=+ HiLink hi def link <args>
+    endif
+    HiLink cppSpecifier Type
+    delcommand HiLink
+endif
+
+
+function! GetNamespaces()
+    " Save the cursor
+    let l = line('.')
+    let c = col('.')
+
+    let pattern = '\v^namespace\s+(\w+)\s*\{'
+
+    let namespaces = []
+    let lastLine = search(pattern, 'bW')
+    while lastLine > 0
+        echo 'Found namespace header on line ' . lastLine
+
+        " Find matching brace
+        normal %
+        echo 'Found closing brace on line ' . line('.')
+
+        if line('.') < lastLine
+            " We've skipped into a new namespace block. We're done.
+            echo 'New namespace block; breaking'
+            break
+        endif
+
+        " Jump back to the starting brace
+        normal %
+        echo 'Back to line ' . line('.')
+
+        let ns = substitute(getline('.'), pattern, '\1', '') 
+        echo 'Found namespace: ' . ns
+        if ns !=# ''
+            call insert(namespaces, ns, 0)
+            echo 'Namespaces so far: ' . string(namespaces)
+        endif
+
+        " Search for the next namespace
+        echo 'Searching again...'
+        let searchLine = search(pattern, 'bW')
+    endwhile
+
+    " Restore the cursor position
+    call cursor(l, c)
+
+    return namespace
+endfunction