Add basic support for tup's Tupfile format

rc/tupfile.kak

@@ -0,0 +1,38 @@
+# http://gittup.org/tup/
+#
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate (.+/)?[Tt]upfile %{
+    set buffer mimetype ""
+    set buffer filetype tupfile
+}
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+addhl -group / regions -default code tupfile \
+    string '"' (?<!\\)(\\\\)*" '' \
+    comment '#' $ ''
+
+addhl -group /tupfile/string fill string
+addhl -group /tupfile/comment fill comment
+
+addhl -group /tupfile/code regex "\%[fbBeoOdg]\>" 0:value
+addhl -group /tupfile/code regex "\$\([\w_]+\)" 0:value
+addhl -group /tupfile/code regex ":\s*(foreach)\>" 1:keyword
+addhl -group /tupfile/code regex "(\.gitignore\>)" 0:keyword
+addhl -group /tupfile/code regex "\<ifn?eq|ifn?def|else|endif|error|include|include_rules|run|preload|export\>" 0:keyword
+addhl -group /tupfile/code regex "\<(\&?[\w_]+)\s*[:+]?=" 1:keyword
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=tupfile %{
+    addhl ref tupfile
+}
+
+hook global WinSetOption filetype=(?!tupfile).* %{
+    rmhl tupfile
+}