diff --git a/syntax-highlighting/def.nanorc b/syntax-highlighting/def.nanorc
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+++ b/syntax-highlighting/def.nanorc
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+syntax def "\.def$"
+comment "//"
+
+# Commands
+color magenta "\<(extends|size|vtable(-size)?|property|static-property(-array)?|((static|virtual)-)?method|constructor)\>"
+
+# Types
+color green "\<(char|uchar|int|uint|float|bool|void|std::(string|vector|map))\>"
+
+# Numbers
+color yellow "0x[a-f0-9]+"
+
+# Comments
+color brightblue "//.*"
+
+# Trailing whitespace.
+color ,green "[[:space:]]+$"