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+# http://complang.org/ragel
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# ragel.kak does not try to detect host language.
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate .*[.](ragel|rl) %{
+    set-option buffer filetype ragel
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=ragel %{
+    require-module ragel
+
+    hook window ModeChange pop:insert:.* -group ragel-trim-indent ragel-trim-indent
+    hook window InsertChar .* -group ragel-indent ragel-indent-on-char
+    hook window InsertChar \n -group ragel-insert ragel-insert-on-new-line
+    hook window InsertChar \n -group ragel-indent ragel-indent-on-new-line
+
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window ragel-.+ }
+}
+
+hook -group ragel-highlight global WinSetOption filetype=ragel %{
+    add-highlighter window/ragel ref ragel
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/ragel }
+}
+
+provide-module ragel %§
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+add-highlighter shared/ragel regions
+add-highlighter shared/ragel/code default-region group
+add-highlighter shared/ragel/double_string region '"' (?<!\\)(\\\\)*"         fill string
+add-highlighter shared/ragel/single_string region "'" "'"                     fill string
+add-highlighter shared/ragel/comment region '#' '$'                     fill comment
+
+add-highlighter shared/ragel/code/ regex \b(true|false)\b 0:value
+add-highlighter shared/ragel/code/ regex '%%\{|\}%%|<\w+>' 0:variable
+add-highlighter shared/ragel/code/ regex :=|=>|->|:>|:>>|<: 0:operator
+add-highlighter shared/ragel/code/ regex \b(action|alnum|alpha|any|ascii|case|cntrl|contained|context|data|digit|empty|eof|err|error|exec|export|exports|extend|fblen|fbreak|fbuf|fc|fcall|fcurs|fentry|fexec|fgoto|fhold|first_final|fnext|fpc|fret|from|fstack|ftargs|graph|import|include|init|inwhen|lerr|lower|machine|nocs|noend|noerror|nofinal|noprefix|outwhen|postpop|prepush|print|punct|range|space|start|to|upper|when|write|xdigit|zlen)\b 0:keyword
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden ragel-trim-indent %{
+    # remove trailing white spaces
+    try %{ execute-keys -draft -itersel x s \h+$ <ret> d }
+}
+
+define-command -hidden ragel-indent-on-char %<
+    evaluate-commands -draft -itersel %<
+        # align closer token to its opener when alone on a line
+        try %< execute-keys -draft <a-h> <a-k> ^\h+[\]})]$ <ret>        m         s \A|.\z <ret> 1<a-&> >
+        try %< execute-keys -draft <a-h> <a-k> ^\h+   [*]$ <ret> <a-?> [*]$ <ret> s \A|.\z <ret> 1<a-&> >
+    >
+>
+
+define-command -hidden ragel-insert-on-new-line %<
+    evaluate-commands -draft -itersel %<
+        # copy _#_ comment prefix and following white spaces
+        try %{ execute-keys -draft k x s ^\h*\K#\h* <ret> y gh j P }
+    >
+>
+
+define-command -hidden ragel-indent-on-new-line %<
+    evaluate-commands -draft -itersel %<
+        # preserve previous line indent
+        try %{ execute-keys -draft <semicolon> K <a-&> }
+        # filter previous line
+        try %{ execute-keys -draft k : ragel-trim-indent <ret> }
+        # indent after lines ending with opener token
+        try %< execute-keys -draft k x <a-k> [[{(*]$ <ret> j <a-gt> >
+        # align closer token to its opener when after cursor
+        try %< execute-keys -draft x <a-k> ^\h*[})\]] <ret> gh / [})\]] <ret> m <a-S> 1<a-&> >
+    >
+>
+
+§