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+# Note: jade is changing its name to pug (https://github.com/pugjs/pug/issues/2184)
+# This appears to be a work in progress -- the pug-lang domain is parked, while
+# the jade-lang one is active. This highlighter will recognize .pug and .jade extensions,
+
+# http://jade-lang.com (will be http://pug-lang.com)
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate .*[.](pug|jade) %{
+    set-option buffer filetype pug
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=pug %{
+    require-module pug
+
+    hook window ModeChange pop:insert:.* -group pug-trim-indent pug-trim-indent
+    hook window InsertChar \n -group pug-indent pug-indent-on-new-line
+
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window pug-.+ }
+}
+
+hook -group pug-highlight global WinSetOption filetype=pug %{
+    add-highlighter window/pug ref pug
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/pug }
+}
+
+
+provide-module pug %{
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+add-highlighter shared/pug regions
+add-highlighter shared/pug/code          default-region group
+add-highlighter shared/pug/text          region ^\h*\|\s     $                      regex   \h*(\|) 1:meta
+add-highlighter shared/pug/text2         region '^\h*([A-Za-z][A-Za-z0-9_-]*)?(#[A-Za-z][A-Za-z0-9_-]*)?((?:\.[A-Za-z][A-Za-z0-9_-]*)*)?(?<!\t)(?<! )(?<!\n)\h+\K.*' $ regex   \h*(\|) 1:meta
+add-highlighter shared/pug/javascript    region ^\h*[-=!]    $                      ref javascript
+add-highlighter shared/pug/double_string region '"'          (?:(?<!\\)(\\\\)*"|$)  fill string
+add-highlighter shared/pug/single_string region "'"          (?:(?<!\\)(\\\\)*'|$)  fill string
+add-highlighter shared/pug/comment       region //           $                      fill comment
+add-highlighter shared/pug/attribute     region -recurse \( \(            \)        group
+add-highlighter shared/pug/puglang       region ^\h*\b(\block|extends|include|append|prepend|if|unless|else|case|when|default|each|while|mixin)\b $ group
+
+# Filters
+# ‾‾‾‾‾‾‾
+
+add-highlighter shared/pug/attribute/       ref     javascript
+add-highlighter shared/pug/attribute/       regex   [()=]                             0:operator
+add-highlighter shared/pug/puglang/         ref     javascript
+add-highlighter shared/pug/puglang/         regex   \b(\block|extends|include|append|prepend|if|unless|else|case|when|default|each|while|mixin|of|in)\b 0:keyword
+add-highlighter shared/pug/code/            regex   ^\h*([A-Za-z][A-Za-z0-9_-]*)      1:type
+add-highlighter shared/pug/code/            regex   '(#[A-Za-z][A-Za-z0-9_-]*)'       1:variable
+add-highlighter shared/pug/code/            regex   ((?:\.[A-Za-z][A-Za-z0-9_-]*)*)   1:value
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden pug-trim-indent %{
+    # remove trailing white spaces
+    try %{ execute-keys -draft -itersel x s \h+$ <ret> d }
+}
+
+define-command -hidden pug-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 : pug-trim-indent <ret> }
+        # copy '//', '|', '-' or '(!)=' prefix and following whitespace
+        try %{ execute-keys -draft k x s ^\h*\K[/|!=-]{1,2}\h* <ret> y gh j P }
+        # indent unless we copied something above
+        try %{ execute-keys -draft <a-gt> , b s \S <ret> g l <a-lt> }
+    }
+}
+
+}