Add makefile highlighting support

rc/makefile.kak

@@ -0,0 +1,30 @@
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufSetOption mimetype=text/x-makefile %{
+    set buffer filetype makefile
+}
+
+hook global BufCreate [mM]akefile %{
+    set buffer filetype makefile
+}
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+addhl -group / regions -default content makefile \
+   comment '#' '$' '' \
+   eval '\$\(' '\)' '\('
+
+addhl -group /makefile/comment fill comment
+addhl -group /makefile/eval fill value
+
+addhl -group /makefile/content regex ^[\w.%]+\h*:\s 0:identifier
+addhl -group /makefile/content regex \b(ifeq|ifneq|else|endif)\b 0:keyword
+addhl -group /makefile/content regex [+?:]= 0:operator
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=makefile %{ addhl ref makefile }
+hook global WinSetOption filetype=(?!makefile).* %{ rmhl makefile }