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diff --git a/autoload/filetype/i3.kak b/autoload/filetype/i3.kak
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+hook global BufCreate .*(sway|i3)/config %{
+    set buffer filetype i3
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=i3 %[
+    require-module i3
+
+    # cleanup trailing whitespaces when exiting insert mode
+    hook window ModeChange pop:insert:.* -group i3-trim-indent %{ try %{ execute-keys -draft xs^\h+$<ret>d } }
+    hook window InsertChar \n -group i3-insert i3-insert-on-new-line
+    hook window InsertChar \n -group i3-indent i3-indent-on-new-line
+    hook window InsertChar \} -group i3-indent i3-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window i3-.+ }
+]
+
+hook -group i3-highlight global WinSetOption filetype=i3 %{
+    add-highlighter window/i3 ref i3
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/i3 }
+}
+
+
+provide-module i3 %[
+
+add-highlighter shared/i3 regions
+add-highlighter shared/i3/code default-region group
+add-highlighter shared/i3/double_string region %{"} %{"} group
+add-highlighter shared/i3/single_string region %{'} %{'} group
+add-highlighter shared/i3/exec region %{((?<=exec )|(?<=--no-startup-id ))(?!--no-startup-id)} "$" fill string
+add-highlighter shared/i3/comment region "#" "$" fill comment
+
+add-highlighter shared/i3/double_string/ fill string
+add-highlighter shared/i3/single_string/ fill string
+
+# Symbols
+add-highlighter shared/i3/code/ regex "[+|→]" 0:operator
+add-highlighter shared/i3/code/ regex "\$\w+" 0:variable
+
+# keys
+add-highlighter shared/i3/code/ regex "\b(Shift|Control|Ctrl|Mod1|Mod2|Mod3|Mod4|Mod5|Mode_switch|Return|Escape|Print)\b" 0:value
+
+# keywords
+add-highlighter shared/i3/code/ regex "\b(bind|bindcode|bindsym|assign|new_window|default_(floating_)?border|popup_during_fullscreen|font|floating_modifier|default_orientation|workspace_layout|for_window|focus_follows_mouse|bar|position|colors|output|tray_output|workspace_buttons|workspace_auto_back_and_forth|binding_mode_indicator|debuglog|floating_minimum_size|floating_maximum_size|force_focus_wrapping|force_xinerama|force_display_urgency_hint|hidden_state|modifier|new_float|shmlog|socket_path|verbose|mouse_warping|strip_workspace_numbers|focus_on_window_activation|no_focus|set|mode|set_from_resource)\b" 0:keyword
+# function keywords
+add-highlighter shared/i3/code/ regex "\b(exit|reload|restart|kill|fullscreen|global|layout|border|focus|move|open|split|append_layout|mark|unmark|resize|grow|shrink|show|nop|rename|title_format|sticky)\b" 0:function
+add-highlighter shared/i3/code/ regex "\b(exec|exec_always|i3bar_command|status_command)\b" 0:function
+# " these are not keywords but we add them for consistency
+add-highlighter shared/i3/code/ regex "\b(no|false|inactive)\b" 0:value
+
+# values
+add-highlighter shared/i3/code/ regex "\b(1pixel|default|stacked|tabbed|normal|none|tiling|stacking|floating|enable|disable|up|down|horizontal|vertical|auto|up|down|left|right|parent|child|px|or|ppt|leave_fullscreen|toggle|mode_toggle|scratchpad|width|height|top|bottom|client|hide|primary|yes|all|active|window|container|to|absolute|center|on|off|ms|smart|ignore|pixel|splith|splitv|output|true)\b" 0:value
+add-highlighter shared/i3/code/ regex "\b(next|prev|next_on_output|prev_on_output|back_and_forth|current|number|none|vertical|horizontal|both|dock|hide|invisible|gaps|smart_gaps|smart_borders|inner|outer|current|all|plus|minus|no_gaps)\b" 0:value
+
+# double-dash arguments
+add-highlighter shared/i3/code/ regex "--(release|border|whole-window|toggle|no-startup-id)" 0:attribute
+
+# color
+add-highlighter shared/i3/double_string/ regex "#[0-9a-fA-F]{6}" 0:value
+add-highlighter shared/i3/single_string/ regex "#[0-9a-fA-F]{6}" 0:value
+
+# attributes
+add-highlighter shared/i3/code/ regex "client\.(background|statusline|background|separator|statusline)" 1:attribute
+add-highlighter shared/i3/code/ regex "client\.(focused_inactive|focused_tab_title|focused|unfocused|urgent|inactive_workspace|urgent_workspace|focused_workspace|active_workspace|placeholder)" 1:attribute
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden i3-insert-on-new-line %~
+    evaluate-commands -draft -itersel %=
+        # copy # comments prefix
+        try %{ execute-keys -draft kx s ^\h*#\h* <ret> y jgh P }
+    =
+~
+
+define-command -hidden i3-indent-on-new-line %~
+    evaluate-commands -draft -itersel %=
+        # preserve previous line indent
+        try %{ execute-keys -draft <semicolon>K<a-&> }
+        # indent after lines ending with {
+        try %[ execute-keys -draft kx <a-k> \{\h*$ <ret> j<a-gt> ]
+        # cleanup trailing white spaces on the previous line
+        try %{ execute-keys -draft kx s \h+$ <ret>d }
+    =
+~
+
+define-command -hidden i3-indent-on-closing-curly-brace %[
+    # align to opening curly brace when alone on a line
+    try %[ execute-keys -itersel -draft <a-h><a-k>^\h+\}$<ret>hms\A|.\z<ret>1<a-&> ]
+]
+
+]