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diff --git a/autoload/filetype/yaml.kak b/autoload/filetype/yaml.kak
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+# http://yaml.org
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate .*[.](ya?ml) %{
+    set-option buffer filetype yaml
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=yaml %{
+    require-module yaml
+
+    hook window ModeChange pop:insert:.* -group yaml-trim-indent yaml-trim-indent
+    hook window InsertChar \n -group yaml-insert yaml-insert-on-new-line
+    hook window InsertChar \n -group yaml-indent yaml-indent-on-new-line
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window yaml-.+ }
+}
+
+hook -group yaml-highlight global WinSetOption filetype=yaml %{
+    add-highlighter window/yaml ref yaml
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/yaml }
+}
+
+
+provide-module yaml %{
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+add-highlighter shared/yaml regions
+add-highlighter shared/yaml/code      default-region group
+add-highlighter shared/yaml/double_string region '"' (?<!\\)(\\\\)*"       fill string
+add-highlighter shared/yaml/single_string region "'" "'"                   fill string
+add-highlighter shared/yaml/comment       region '(?:^| )#' $              fill comment
+
+add-highlighter shared/yaml/code/ regex ^(---|\.\.\.)$ 0:meta
+add-highlighter shared/yaml/code/ regex ^(\h*:\w*) 0:keyword
+add-highlighter shared/yaml/code/ regex \b(true|false|null)\b 0:value
+add-highlighter shared/yaml/code/ regex ^\h*-?\h*(\S+): 1:attribute
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden yaml-trim-indent %{
+    # remove trailing white spaces
+    try %{ execute-keys -draft -itersel x s \h+$ <ret> d }
+}
+
+define-command -hidden yaml-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 yaml-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 : yaml-trim-indent <ret> }
+        # indent after :
+        try %{ execute-keys -draft , k x <a-k> :$ <ret> j <a-gt> }
+        # indent after -
+        try %{ execute-keys -draft , k x <a-k> ^\h*- <ret> j <a-gt> }
+    }
+}
+
+}