diff --git a/rc/extra/cabal.kak b/rc/extra/cabal.kak
index 058f9d17..fd75a5a6 100644
--- a/rc/extra/cabal.kak
+++ b/rc/extra/cabal.kak
@@ -58,17 +58,17 @@ define-command -hidden cabal-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group cabal-highlight global WinSetOption filetype=cabal %{ add-highlighter window/cabal ref cabal }
+hook -group cabal-highlight global WinSetOption filetype=cabal %{
+    add-highlighter window/cabal ref cabal
+    hook -once -always window WinSetOption filetype=(?!cabal).* %{ remove-highlighter window/cabal }
+
+}
 
 hook global WinSetOption filetype=cabal %[
     hook window ModeChange insert:.* -group cabal-hooks  cabal-filter-around-selections
     hook window InsertChar \n -group cabal-indent cabal-indent-on-new-line
     hook window InsertChar \{ -group cabal-indent cabal-indent-on-opening-curly-brace
     hook window InsertChar \} -group cabal-indent cabal-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=(?!cabal).* %{ remove-hooks window cabal-.+ }
 ]
-
-hook -group cabal-highlight global WinSetOption filetype=(?!cabal).* %{ remove-highlighter window/cabal }
-
-hook global WinSetOption filetype=(?!cabal).* %{
-    remove-hooks window cabal-.+
-}
diff --git a/rc/extra/cmake.kak b/rc/extra/cmake.kak
index 7c43cbdc..ee16b27e 100644
--- a/rc/extra/cmake.kak
+++ b/rc/extra/cmake.kak
@@ -21,5 +21,7 @@ add-highlighter shared/cmake/argument/quoted/ fill string
 add-highlighter shared/cmake/argument/quoted/ regex '\$\{\w+\}' 0:variable
 add-highlighter shared/cmake/argument/quoted/ regex '\w+\h*(?=\()' 0:function
 
-hook -group cmake-highlight global WinSetOption filetype=cmake %{ add-highlighter window/cmake ref cmake }
-hook -group cmake-highlight global WinSetOption filetype=(?!cmake).* %{ remove-highlighter window/cmake }
+hook -group cmake-highlight global WinSetOption filetype=cmake %{
+    add-highlighter window/cmake ref cmake
+    hook -once -always window WinSetOption filetype=(?!cmake).* %{ remove-highlighter window/cmake }
+}
diff --git a/rc/extra/coffee.kak b/rc/extra/coffee.kak
index 351f91f1..e091f3c6 100644
--- a/rc/extra/coffee.kak
+++ b/rc/extra/coffee.kak
@@ -66,15 +66,14 @@ define-command -hidden coffee-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group coffee-highlight global WinSetOption filetype=coffee %{ add-highlighter window/coffee ref coffee }
+hook -group coffee-highlight global WinSetOption filetype=coffee %{
+    add-highlighter window/coffee ref coffee
+    hook -once -always window WinSetOption filetype=(?!coffee).* %{ remove-highlighter window/coffee }
+}
 
 hook global WinSetOption filetype=coffee %{
     hook window ModeChange insert:.* -group coffee-hooks  coffee-filter-around-selections
     hook window InsertChar \n -group coffee-indent coffee-indent-on-new-line
-}
 
-hook -group coffee-highlight global WinSetOption filetype=(?!coffee).* %{ remove-highlighter window/coffee }
-
-hook global WinSetOption filetype=(?!coffee).* %{
-    remove-hooks window coffee-.+
+    hook -once -always window WinSetOption filetype=(?!coffee).* %{ remove-hooks window coffee-.+ }
 }
diff --git a/rc/extra/cucumber.kak b/rc/extra/cucumber.kak
index aa2081c3..9f1d8f07 100644
--- a/rc/extra/cucumber.kak
+++ b/rc/extra/cucumber.kak
@@ -76,15 +76,14 @@ define-command -hidden cucumber-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group cucumber-highlight global WinSetOption filetype=cucumber %{ add-highlighter window/cucumber ref cucumber }
+hook -group cucumber-highlight global WinSetOption filetype=cucumber %{
+    add-highlighter window/cucumber ref cucumber
+    hook -once -always window WinSetOption filetype=(?!cucumber).* %{ remove-highlighter window/cucumber }
+}
 
 hook global WinSetOption filetype=cucumber %{
     hook window ModeChange insert:.* -group cucumber-hooks  cucumber-filter-around-selections
     hook window InsertChar \n -group cucumber-indent cucumber-indent-on-new-line
-}
 
-hook -group cucumber-highlight global WinSetOption filetype=(?!cucumber).* %{ remove-highlighter window/cucumber }
-
-hook global WinSetOption filetype=(?!cucumber).* %{
-    remove-hooks window cucumber-.+
+    hook -once -always window WinSetOption filetype=(?!cucumber).* %{ remove-hooks window cucumber-.+ }
 }
diff --git a/rc/extra/dart.kak b/rc/extra/dart.kak
index 0dba128c..58fa3d29 100644
--- a/rc/extra/dart.kak
+++ b/rc/extra/dart.kak
@@ -90,7 +90,10 @@ define-command -hidden dart-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group dart-highlight global WinSetOption filetype=dart %{ add-highlighter window/dart ref dart }
+hook -group dart-highlight global WinSetOption filetype=dart %{
+    add-highlighter window/dart ref dart
+    hook -once -always window WinSetOption filetype=(?!dart).* %{ remove-highlighter window/dart }
+}
 
 hook global WinSetOption filetype=dart %{
     # cleanup trailing whitespaces when exiting insert mode
@@ -98,10 +101,6 @@ hook global WinSetOption filetype=dart %{
     hook window InsertChar \n -group dart-indent dart-indent-on-new-line
     hook window InsertChar \{ -group dart-indent dart-indent-on-opening-curly-brace
     hook window InsertChar \} -group dart-indent dart-indent-on-closing-curly-brace
-}
 
-hook -group dart-highlight global WinSetOption filetype=(?!dart).* %{ remove-highlighter window/dart }
-
-hook global WinSetOption filetype=(?!dart).* %{
-    remove-hooks window dart-.+
+    hook -once -always window WinSetOption filetype=(?!dart).* %{ remove-hooks window dart-.+ }
 }
diff --git a/rc/extra/dockerfile.kak b/rc/extra/dockerfile.kak
index fcc4c5c3..0532479b 100644
--- a/rc/extra/dockerfile.kak
+++ b/rc/extra/dockerfile.kak
@@ -42,5 +42,7 @@ add-highlighter shared/dockerfile/code/ regex '\$[\w_]+' 0:value
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group dockerfile-highlight global WinSetOption filetype=dockerfile %{ add-highlighter window/dockerfile ref dockerfile }
-hook -group dockerfile-highlight global WinSetOption filetype=(?!dockerfile).* %{ remove-highlighter window/dockerfile }
+hook -group dockerfile-highlight global WinSetOption filetype=dockerfile %{
+    add-highlighter window/dockerfile ref dockerfile
+    hook -once -always window WinSetOption filetype=(?!dockerfile).* %{ remove-highlighter window/dockerfile }
+}
diff --git a/rc/extra/elixir.kak b/rc/extra/elixir.kak
index 86799213..70a3a676 100644
--- a/rc/extra/elixir.kak
+++ b/rc/extra/elixir.kak
@@ -64,12 +64,14 @@ define-command -hidden elixir-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group elixir-highlight global WinSetOption filetype=elixir %{ add-highlighter window/elixir ref elixir }
+hook -group elixir-highlight global WinSetOption filetype=elixir %{
+    add-highlighter window/elixir ref elixir
+    hook -once -always window WinSetOption filetype=(?!elixir).* %{ remove-highlighter window/elixir }
+}
 
 hook global WinSetOption filetype=elixir %{
     hook window ModeChange insert:.* -group elixir-hooks  elixir-filter-around-selections
     hook window InsertChar \n -group elixir-indent elixir-indent-on-new-line
+
+    hook -once -always window WinSetOption filetype=(?!elixir).* %{ remove-hooks window elixir-.+ }
 }
-
-hook -group elixir-highlight global WinSetOption filetype=(?!elixir).* %{ remove-highlighter window/elixir }
-
diff --git a/rc/extra/elm.kak b/rc/extra/elm.kak
index 0817fb5a..65db1dbd 100644
--- a/rc/extra/elm.kak
+++ b/rc/extra/elm.kak
@@ -54,15 +54,14 @@ define-command -hidden elm-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group elm-highlight global WinSetOption filetype=elm %{ add-highlighter window/elm ref elm }
+hook -group elm-highlight global WinSetOption filetype=elm %{
+    add-highlighter window/elm ref elm
+    hook -once -always window WinSetOption filetype=(?!elm).* %{ remove-highlighter window/elm }
+}
 
 hook global WinSetOption filetype=elm %{
     hook window ModeChange insert:.* -group elm-hooks  elm-filter-around-selections
     hook window InsertChar \n -group elm-indent elm-indent-on-new-line
-}
 
-hook -group elm-highlight global WinSetOption filetype=(?!elm).* %{ remove-highlighter window/elm }
-
-hook global WinSetOption filetype=(?!elm).* %{
-    remove-hooks window elm-.+
+    hook -once -always window WinSetOption filetype=(?!elm).* %{ remove-hooks window elm-.+ }
 }
diff --git a/rc/extra/exherbo.kak b/rc/extra/exherbo.kak
index a383c426..2e54c499 100644
--- a/rc/extra/exherbo.kak
+++ b/rc/extra/exherbo.kak
@@ -34,8 +34,10 @@ add-highlighter shared/exheres-0-metadata/ regex ^(?:[\s\t]+)?[\S]+[\s\t]+=[\s\t
 add-highlighter shared/exheres-0-metadata/ regex ^(?:[\s\t]+)?(\S+)\s\[\[$ 0:type
 add-highlighter shared/exheres-0-metadata/ regex ^(?:[\s\t]+)?\]\]$ 0:type
 
-hook -group exheres-0-metadata-highlight global WinSetOption filetype=exheres-0-metadata %{ add-highlighter window/exheres-0-metadata ref exheres-0-metadata }
-hook -group exheres-0-metadata-highlight global WinSetOption filetype=(?!exheres-0-metadata).* %{ remove-highlighter window/exheres-0-metadata }
+hook -group exheres-0-metadata-highlight global WinSetOption filetype=exheres-0-metadata %{
+    add-highlighter window/exheres-0-metadata ref exheres-0-metadata
+    hook -once -always window WinSetOption filetype=(?!exheres-0-metadata).* %{ remove-highlighter window/exheres-0-metadata }
+}
 
 ## exheres-0 options descriptions
 add-highlighter shared/exheres-0-options-descriptions group
@@ -44,8 +46,10 @@ add-highlighter shared/exheres-0-options-descriptions/ regex ^(?:[\s\t]+)?[\S]+[
 add-highlighter shared/exheres-0-options-descriptions/ regex ^(?:[\s\t]+)?(\S+)\s\[\[$ 0:type
 add-highlighter shared/exheres-0-options-descriptions/ regex ^(?:[\s\t]+)?\]\]$ 0:type
 
-hook -group exheres-0-options-descriptions-highlight global WinSetOption filetype=exheres-0-options-descriptions %{ add-highlighter window/exheres-0-options-descriptions ref exheres-0-options-descriptions }
-hook -group exheres-0-options-descriptions-highlight global WinSetOption filetype=(?!exheres-0-options-descriptions).* %{ remove-highlighter window/exheres-0-options-descriptions }
+hook -group exheres-0-options-descriptions-highlight global WinSetOption filetype=exheres-0-options-descriptions %{
+    add-highlighter window/exheres-0-options-descriptions ref exheres-0-options-descriptions
+    hook -once -always window WinSetOption filetype=(?!exheres-0-options-descriptions).* %{ remove-highlighter window/exheres-0-options-descriptions }
+}
 
 ## metadata/licence_groups.conf
 add-highlighter shared/exheres-0-licence-groups group
@@ -53,8 +57,10 @@ add-highlighter shared/exheres-0-licence-groups/ regex [\s\t]+(\S+(?:[\s\t]+))*$
 add-highlighter shared/exheres-0-licence-groups/ regex ^(\S+) 0:type
 add-highlighter shared/exheres-0-licence-groups/ regex ^#.*?$ 0:comment
 
-hook -group exheres-0-licence-groups-highlight global WinSetOption filetype=exheres-0-licence-groups %{ add-highlighter window/exheres-0-licence-groups ref exheres-0-licence-groups }
-hook -group exheres-0-licence-groups-highlight global WinSetOption filetype=(?!exheres-0-licence-groups).* %{ remove-highlighter window/exheres-0-licence-groups }
+hook -group exheres-0-licence-groups-highlight global WinSetOption filetype=exheres-0-licence-groups %{
+    add-highlighter window/exheres-0-licence-groups ref exheres-0-licence-groups
+    hook -once -always window WinSetOption filetype=(?!exheres-0-licence-groups).* %{ remove-highlighter window/exheres-0-licence-groups }
+}
 
 ## Paludis configurations
 ### options.conf
@@ -67,24 +73,30 @@ add-highlighter shared/paludis-options-conf/ regex [\s\t](-\S+)(.*?) 1:red
 add-highlighter shared/paludis-options-conf/ regex ^(\S+/\S+) 0:type
 add-highlighter shared/paludis-options-conf/ regex ^#.*?$ 0:comment
 
-hook -group paludis-options-conf-highlight global WinSetOption filetype=paludis-options-conf %{ add-highlighter window/paludis-options-conf ref paludis-options-conf }
-hook -group paludis-options-conf-highlight global WinSetOption filetype=(?!paludis-options-conf).* %{ remove-highlighter window/paludis-options-conf }
+hook -group paludis-options-conf-highlight global WinSetOption filetype=paludis-options-conf %{
+    add-highlighter window/paludis-options-conf ref paludis-options-conf
+    hook -once -always window WinSetOption filetype=(?!paludis-options-conf).* %{ remove-highlighter window/paludis-options-conf }
+}
 
 ## general.conf, repository.template
 add-highlighter shared/paludis-key-value-conf group
 add-highlighter shared/paludis-key-value-conf/ regex ^[\s\t]?(\S+)[\s\t+]=[\s\t+](.*?)$ 1:attribute 2:value
 add-highlighter shared/paludis-key-value-conf/ regex ^#.*?$ 0:comment
 
-hook -group paludis-key-value-conf-highlight global WinSetOption filetype=paludis-key-value-conf %{ add-highlighter window/paludis-key-value-conf ref paludis-key-value-conf }
-hook -group paludis-key-value-conf-highlight global WinSetOption filetype=(?!paludis-key-value-conf).* %{ remove-highlighter window/paludis-key-value-conf }
+hook -group paludis-key-value-conf-highlight global WinSetOption filetype=paludis-key-value-conf %{
+    add-highlighter window/paludis-key-value-conf ref paludis-key-value-conf
+    hook -once -always window WinSetOption filetype=(?!paludis-key-value-conf).* %{ remove-highlighter window/paludis-key-value-conf }
+}
 
 ## mirrors.conf
 add-highlighter shared/paludis-mirrors-conf group
 add-highlighter shared/paludis-mirrors-conf/ regex ^[\s\t+]?(\S+)[\s\t+](.*?)$ 1:type 2:value
 add-highlighter shared/paludis-mirrors-conf/ regex ^#.*?$ 0:comment
 
-hook -group paludis-mirrors-conf-highlight global WinSetOption filetype=paludis-mirrors-conf %{ add-highlighter window/paludis-mirrors-conf ref paludis-mirrors-conf }
-hook -group paludis-mirrors-conf-highlight global WinSetOption filetype=(?!paludis-mirrors-conf).* %{ remove-highlighter window/paludis-mirrors-conf }
+hook -group paludis-mirrors-conf-highlight global WinSetOption filetype=paludis-mirrors-conf %{
+    add-highlighter window/paludis-mirrors-conf ref paludis-mirrors-conf
+    hook -once -always window WinSetOption filetype=(?!paludis-mirrors-conf).* %{ remove-highlighter window/paludis-mirrors-conf }
+}
 
 ## package_(unmask|mask).conf, platforms.conf
 add-highlighter shared/paludis-specs-conf group
@@ -92,8 +104,10 @@ add-highlighter shared/paludis-specs-conf/ regex [\s\t]+(\S+(?:[\s\t]+))*$ 0:att
 add-highlighter shared/paludis-specs-conf/ regex ^(\S+/\S+) 0:type
 add-highlighter shared/paludis-specs-conf/ regex ^#.*?$ 0:comment
 
-hook -group paludis-specs-conf-highlight global WinSetOption filetype=paludis-specs-conf %{ add-highlighter window/paludis-specs-conf ref paludis-specs-conf }
-hook -group paludis-specs-conf-highlight global WinSetOption filetype=(?!paludis-specs-conf).* %{ remove-highlighter window/paludis-specs-conf }
+hook -group paludis-specs-conf-highlight global WinSetOption filetype=paludis-specs-conf %{
+    add-highlighter window/paludis-specs-conf ref paludis-specs-conf
+    hook -once -always window WinSetOption filetype=(?!paludis-specs-conf).* %{ remove-highlighter window/paludis-specs-conf }
+}
 
 ## News items (GLEP42)
 add-highlighter shared/glep42 group
@@ -101,5 +115,7 @@ add-highlighter shared/glep42/ regex ^(Title|Author|Translator|Content-Type|Post
 add-highlighter shared/glep42/ regex <[^@>]+@.*?> 0:string
 add-highlighter shared/glep42/ regex ^>.*?$ 0:comment
 
-hook -group glep42-highlight global WinSetOption filetype=glep42 %{ add-highlighter window/glep42 ref glep42 }
-hook -group glep42-highlight global WinSetOption filetype=(?!glep42).* %{ remove-highlighter window/glep42 }
+hook -group glep42-highlight global WinSetOption filetype=glep42 %{
+    add-highlighter window/glep42 ref glep42
+    hook -once -always window WinSetOption filetype=(?!glep42).* %{ remove-highlighter window/glep42 }
+}
diff --git a/rc/extra/git-tools.kak b/rc/extra/git-tools.kak
index 55d5cf53..2f030b6e 100644
--- a/rc/extra/git-tools.kak
+++ b/rc/extra/git-tools.kak
@@ -6,16 +6,18 @@ hook -group git-log-highlight global WinSetOption filetype=git-log %{
     add-highlighter window/git-log/ regex '^(commit) ([0-9a-f]+)$' 1:yellow 2:red
     add-highlighter window/git-log/ regex '^([a-zA-Z_-]+:) (.*?)$' 1:green 2:magenta
     add-highlighter window/git-log/ ref diff # highlight potential diffs from the -p option
+
+    hook -once -always window WinSetOption filetype=(?!git-log).* %{ remove-highlighter window/git-log }
 }
 
-hook -group git-log-highlight global WinSetOption filetype=(?!git-log).* %{ remove-highlighter window/git-log }
 
 hook -group git-status-highlight global WinSetOption filetype=git-status %{
     add-highlighter window/git-status group
     add-highlighter window/git-status/ regex '^\h+(?:((?:both )?modified:)|(added:|new file:)|(deleted(?: by \w+)?:)|(renamed:)|(copied:))(?:.*?)$' 1:yellow 2:green 3:red 4:cyan 5:blue 6:magenta
+
+    hook -once -always window WinSetOption filetype=(?!git-status).* %{ remove-highlighter window/git-status }
 }
 
-hook -group git-status-highlight global WinSetOption filetype=(?!git-status).* %{ remove-highlighter window/git-status }
 
 declare-option -hidden line-specs git_blame_flags
 declare-option -hidden line-specs git_diff_flags
diff --git a/rc/extra/haml.kak b/rc/extra/haml.kak
index 7bf309f6..a672e4a0 100644
--- a/rc/extra/haml.kak
+++ b/rc/extra/haml.kak
@@ -49,15 +49,14 @@ define-command -hidden haml-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group haml-highlight global WinSetOption filetype=haml %{ add-highlighter window/haml ref haml }
+hook -group haml-highlight global WinSetOption filetype=haml %{
+    add-highlighter window/haml ref haml
+    hook -once -always window WinSetOption filetype=(?!haml).* %{ remove-highlighter window/haml }
+}
 
 hook global WinSetOption filetype=haml %{
     hook window ModeChange insert:.* -group haml-hooks  haml-filter-around-selections
     hook window InsertChar \n -group haml-indent haml-indent-on-new-line
-}
 
-hook -group haml-highlight global WinSetOption filetype=(?!haml).* %{ remove-highlighter window/haml }
-
-hook global WinSetOption filetype=(?!haml).* %{
-    remove-hooks window haml-.+
+    hook -once -always window WinSetOption filetype=(?!haml).* %{ remove-hooks window haml-.+ }
 }
diff --git a/rc/extra/hbs.kak b/rc/extra/hbs.kak
index 6f02ca32..8d8467cd 100644
--- a/rc/extra/hbs.kak
+++ b/rc/extra/hbs.kak
@@ -83,6 +83,7 @@ define-command -hidden maybe-add-hbs-to-html %{ evaluate-commands %sh{
 hook -group hbs-highlight global WinSetOption filetype=hbs %{
     maybe-add-hbs-to-html
     add-highlighter window/hbs-file ref hbs-file
+    hook -once -always window WinSetOption filetype=(?!hbs).* %{ remove-highlighter window/hbs-file }
 }
 
 hook global WinSetOption filetype=hbs %{
@@ -92,12 +93,6 @@ hook global WinSetOption filetype=hbs %{
     hook window ModeChange insert:.* -group hbs-hooks  html-filter-around-selections
     hook window InsertChar '>' -group hbs-indent html-indent-on-greater-than
     hook window InsertChar \n -group hbs-indent html-indent-on-new-line
-}
 
-hook -group hbs-highlight global WinSetOption filetype=(?!hbs).* %{
-    remove-highlighter window/hbs-file
-}
-
-hook global WinSetOption filetype=(?!hbs).* %{
-    remove-hooks window hbs-.+
+    hook -once -always window WinSetOption filetype=(?!hbs).* %{ remove-hooks window hbs-.+ }
 }
diff --git a/rc/extra/i3.kak b/rc/extra/i3.kak
index 7e35ace3..2a4bd349 100644
--- a/rc/extra/i3.kak
+++ b/rc/extra/i3.kak
@@ -66,17 +66,16 @@ define-command -hidden i3-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group i3-highlight global WinSetOption filetype=i3 %{ add-highlighter window/i3 ref i3 }
+hook -group i3-highlight global WinSetOption filetype=i3 %{
+    add-highlighter window/i3 ref i3
+    hook -once -always window WinSetOption filetype=(?!i3).* %{ remove-highlighter window/i3 }
+}
 
 hook global WinSetOption filetype=i3 %[
     # cleanup trailing whitespaces when exiting insert mode
     hook window ModeChange insert:.* -group i3-hooks %{ try %{ execute-keys -draft <a-x>s^\h+$<ret>d } }
     hook window InsertChar \n -group i3-indent i3-indent-on-new-line
     hook window InsertChar \} -group i3-indent i3-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=(?!i3).* %{ remove-hooks window i3-.+ }
 ]
-
-hook -group i3-highlight global WinSetOption filetype=(?!i3).* %{ remove-highlighter window/i3 }
-
-hook global WinSetOption filetype=(?!i3).* %{
-    remove-hooks window i3-.+
-}
diff --git a/rc/extra/just.kak b/rc/extra/just.kak
index e8dc19b6..cee68a9c 100644
--- a/rc/extra/just.kak
+++ b/rc/extra/just.kak
@@ -28,25 +28,21 @@ add-highlighter shared/justfile/comment  region '#' '$'  fill comment
 add-highlighter shared/justfile/double_string region '"' (?<!\\)(\\\\)*" fill string
 add-highlighter shared/justfile/single_string region "'" (?<!\\)(\\\\)*' fill string
 add-highlighter shared/justfile/inline   region '`' '`' ref sh
-add-highlighter shared/justfile/shell    region '^\h+' '^[^\h]' group
 
+add-highlighter shared/justfile/shell  region '^\h+' '^[^\h]' group
 add-highlighter shared/justfile/shell/ ref sh
+add-highlighter shared/justfile/shell/ regex '(\{{2})([\w-]+)(\}{2})' 1:operator 2:variable 3:operator
 
 add-highlighter shared/justfile/content/ regex '^(@)?([\w-]+)(?:\s(.+))?\s?(:)(.+)?$' 1:operator 2:function 3:value 4:operator 5:type
 add-highlighter shared/justfile/content/ regex '([=+])' 1:operator
 add-highlighter shared/justfile/content/ regex '^([\w-]+)\s=' 1:value
 
+hook -group justfile-highlight global WinSetOption filetype=justfile %{
+    add-highlighter window/justfile ref justfile
+    hook -once -always window WinSetOption filetype=(?!justfile).* %{ remove-highlighter window/justfile }
+}
+
 hook global WinSetOption filetype=justfile %{
     hook window InsertChar \n -group justfile-indent just-indent-on-new-line
-    add-highlighter window/justfile ref justfile
-
-    # variable substititution highlighting
-    add-highlighter shared/justfile/shell regex '(\{{2})([\w-]+)(\}{2})' 1:operator 2:variable 3:operator
-
+    hook -once -always window WinSetOption filetype=(?!justfile).* %{ remove-hooks window justfile-.+ }
 }
-
-hook global WinSetOption filetype=(?!justfile).* %{
-    remove-highlighter window/justfile
-    remove-hooks window justfile-indent
-}
-
diff --git a/rc/extra/kickstart.kak b/rc/extra/kickstart.kak
index b53448b2..c0ee855b 100644
--- a/rc/extra/kickstart.kak
+++ b/rc/extra/kickstart.kak
@@ -24,5 +24,7 @@ add-highlighter shared/kickstart/shell/ regex '^\h*%end\b' 0:type
 add-highlighter shared/kickstart/shell/ ref sh
 
 
-hook -group kickstart-highlight global WinSetOption filetype=kickstart %{ add-highlighter window/kickstart ref kickstart }
-hook -group kickstart-highlight global WinSetOption filetype=(?!kickstart).* %{ remove-highlighter window/kickstart }
+hook -group kickstart-highlight global WinSetOption filetype=kickstart %{
+    add-highlighter window/kickstart ref kickstart
+    hook -once -always window WinSetOption filetype=(?!kickstart).* %{ remove-highlighter window/kickstart }
+}
diff --git a/rc/extra/latex.kak b/rc/extra/latex.kak
index 4f0a7f15..7e23e582 100644
--- a/rc/extra/latex.kak
+++ b/rc/extra/latex.kak
@@ -29,6 +29,7 @@ add-highlighter shared/latex/content/ regex '\\textbf\{([^}]+)\}' 1:default+b
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group latex-highlight global WinSetOption filetype=latex %{ add-highlighter window/latex ref latex }
-
-hook -group latex-highlight global WinSetOption filetype=(?!latex).* %{ remove-highlighter window/latex }
+hook -group latex-highlight global WinSetOption filetype=latex %{
+    add-highlighter window/latex ref latex
+    hook -once -always window WinSetOption filetype=(?!latex).* %{ remove-highlighter window/latex }
+}
diff --git a/rc/extra/moon.kak b/rc/extra/moon.kak
index d4801814..e8e12b6c 100644
--- a/rc/extra/moon.kak
+++ b/rc/extra/moon.kak
@@ -88,7 +88,10 @@ define-command -hidden moon-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group moon-highlight global WinSetOption filetype=moon %{ add-highlighter window/moon ref moon }
+hook -group moon-highlight global WinSetOption filetype=moon %{
+    add-highlighter window/moon ref moon
+    hook -once -always window WinSetOption filetype=(?!moon).* %{ remove-highlighter window/moon }
+}
 
 hook global WinSetOption filetype=moon %{
     hook window ModeChange insert:.* -group moon-hooks  moon-filter-around-selections
@@ -96,12 +99,9 @@ hook global WinSetOption filetype=moon %{
     hook window InsertChar \n -group moon-indent moon-indent-on-new-line
 
     alias window alt moon-alternative-file
-}
-
-hook -group moon-highlight global WinSetOption filetype=(?!moon).* %{ remove-highlighter window/moon }
-
-hook global WinSetOption filetype=(?!moon).* %{
-    remove-hooks window moon-.+
-
-    unalias window alt moon-alternative-file
+
+    hook global WinSetOption filetype=(?!moon).* %{
+        remove-hooks window moon-.+
+        unalias window alt moon-alternative-file
+    }
 }
diff --git a/rc/extra/nim.kak b/rc/extra/nim.kak
index 4f22db5e..e2e48cd3 100644
--- a/rc/extra/nim.kak
+++ b/rc/extra/nim.kak
@@ -71,16 +71,15 @@ def -hidden nim-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group nim-highlight global WinSetOption filetype=nim %{ add-highlighter window/nim ref nim }
+hook -group nim-highlight global WinSetOption filetype=nim %{
+    add-highlighter window/nim ref nim
+    hook -once -always window WinSetOption filetype=(?!nim).* %{ remove-highlighter window/nim }
+}
 
 hook global WinSetOption filetype=nim %{
     hook window InsertChar \n -group nim-indent nim-indent-on-new-line
     # cleanup trailing whitespaces on current line insert end
     hook window ModeChange insert:.* -group nim-indent %{ try %{ exec -draft \; <a-x> s ^\h+$ <ret> d } }
-}
 
-hook -group nim-highlight global WinSetOption filetype=(?!nim).* %{ remove-highlighter window/nim }
-
-hook global WinSetOption filetype=(?!nim).* %{
-    remove-hooks window nim-indent
+    hook -once -always window WinSetOption filetype=(?!nim).* %{ remove-hooks window nim-.+ }
 }
diff --git a/rc/extra/php.kak b/rc/extra/php.kak
index 1a2b4228..be3dfd26 100644
--- a/rc/extra/php.kak
+++ b/rc/extra/php.kak
@@ -76,16 +76,15 @@ define-command -hidden php-indent-on-new-line %<
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group php-highlight global WinSetOption filetype=php %{ add-highlighter window/php-file ref php-file }
+hook -group php-highlight global WinSetOption filetype=php %{
+    add-highlighter window/php-file ref php-file
+    hook -once -always window WinSetOption filetype=(?!php).* %{ remove-highlighter window/php-file }
+}
 
 hook global WinSetOption filetype=php %{
     hook window ModeChange insert:.* -group php-hooks  php-filter-around-selections
     hook window InsertChar .* -group php-indent php-indent-on-char
     hook window InsertChar \n -group php-indent php-indent-on-new-line
-}
 
-hook -group php-highlight global WinSetOption filetype=(?!php).* %{ remove-highlighter window/php-file }
-
-hook global WinSetOption filetype=(?!php).* %{
-    remove-hooks window php-.+
+    hook -once -always window WinSetOption filetype=(?!php).* %{ remove-hooks window php-.+ }
 }
diff --git a/rc/extra/pony.kak b/rc/extra/pony.kak
index 3c8d105d..69010e4f 100644
--- a/rc/extra/pony.kak
+++ b/rc/extra/pony.kak
@@ -78,16 +78,15 @@ define-command -hidden pony-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group pony-highlight global WinSetOption filetype=pony %{ add-highlighter window/pony ref pony }
+hook -group pony-highlight global WinSetOption filetype=pony %{
+    add-highlighter window/pony ref pony
+    hook -once -always window WinSetOption filetype=(?!pony).* %{ remove-highlighter pony }
+}
 
 hook global WinSetOption filetype=pony %{
     hook window InsertChar \n -group pony-indent pony-indent-on-new-line
     # cleanup trailing whitespaces on current line insert end
     hook window ModeChange insert:.* -group pony-indent %{ try %{ execute-keys -draft \; <a-x> s ^\h+$ <ret> d } }
-}
 
-hook -group pony-highlight global WinSetOption filetype=(?!pony).* %{ remove-highlighter pony }
-
-hook global WinSetOption filetype=(?!pony).* %{
-    remove-hooks window pony-indent
+    hook -once -always window WinSetOption filetype=(?!pony).* %{ remove-hooks window pony-.+ }
 }
diff --git a/rc/extra/protobuf.kak b/rc/extra/protobuf.kak
index c18e6dc7..670bfca8 100644
--- a/rc/extra/protobuf.kak
+++ b/rc/extra/protobuf.kak
@@ -71,16 +71,15 @@ define-command -hidden protobuf-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group protobuf-highlight global WinSetOption filetype=protobuf %{ add-highlighter window/protobuf ref protobuf }
+hook -group protobuf-highlight global WinSetOption filetype=protobuf %{
+    add-highlighter window/protobuf ref protobuf
+    hook -once -always window WinSetOption filetype=(?!protobuf).* %{ remove-highlighter window/protobuf }
+}
 
 hook global WinSetOption filetype=protobuf %[
     hook -group protobuf-indent window InsertChar \n protobuf-indent-on-newline
     hook -group protobuf-indent window InsertChar \{ protobuf-indent-on-opening-curly-brace
     hook -group protobuf-indent window InsertChar \} protobuf-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=(?!protobuf).* %{ remove-hooks window protobuf-.+ }
 ]
-
-hook -group protobuf-highlight global WinSetOption filetype=(?!protobuf).* %{ remove-highlighter window/protobuf }
-
-hook global WinSetOption filetype=(?!protobuf).* %{
-    remove-hooks window protobuf-.+
-}
diff --git a/rc/extra/pug.kak b/rc/extra/pug.kak
index e279d96b..2711b766 100644
--- a/rc/extra/pug.kak
+++ b/rc/extra/pug.kak
@@ -61,15 +61,14 @@ define-command -hidden pug-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group pug-highlight global WinSetOption filetype=pug %{ add-highlighter window/pug ref pug }
+hook -group pug-highlight global WinSetOption filetype=pug %{
+    add-highlighter window/pug ref pug
+    hook -once -always window WinSetOption filetype=(?!pug).* %{ remove-highlighter window/pug }
+}
 
 hook global WinSetOption filetype=pug %{
     hook window ModeChange insert:.* -group pug-hooks  pug-filter-around-selections
     hook window InsertChar \n -group pug-indent pug-indent-on-new-line
-}
 
-hook -group pug-highlight global WinSetOption filetype=(?!pug).* %{ remove-highlighter window/pug }
-
-hook global WinSetOption filetype=(?!pug).* %{
-    remove-hooks window pug-.+
+    hook -once -always window WinSetOption filetype=(?!pug).* %{ remove-hooks window pug-.+ }
 }
diff --git a/rc/extra/ragel.kak b/rc/extra/ragel.kak
index b6f1fd68..ffa84a9d 100644
--- a/rc/extra/ragel.kak
+++ b/rc/extra/ragel.kak
@@ -56,16 +56,15 @@ define-command -hidden ragel-indent-on-new-line %<
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group ragel-highlight global WinSetOption filetype=ragel %{ add-highlighter window/ragel ref ragel }
+hook -group ragel-highlight global WinSetOption filetype=ragel %{
+    add-highlighter window/ragel ref ragel
+    hook -once -always window WinSetOption filetype=(?!ragel).* %{ remove-highlighter window/ragel }
+}
 
 hook global WinSetOption filetype=ragel %{
     hook window ModeChange insert:.* -group ragel-hooks  ragel-filter-around-selections
     hook window InsertChar .* -group ragel-indent ragel-indent-on-char
     hook window InsertChar \n -group ragel-indent ragel-indent-on-new-line
-}
 
-hook -group ragel-highlight global WinSetOption filetype=(?!ragel).* %{ remove-highlighter window/ragel }
-
-hook global WinSetOption filetype=(?!ragel).* %{
-    remove-hooks window ragel-.+
+    hook -once -always window WinSetOption filetype=(?!ragel).* %{ remove-hooks window ragel-.+ }
 }
diff --git a/rc/extra/sass.kak b/rc/extra/sass.kak
index df4929fa..9960eac1 100644
--- a/rc/extra/sass.kak
+++ b/rc/extra/sass.kak
@@ -48,16 +48,15 @@ define-command -hidden sass-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group sass-highlight global WinSetOption filetype=sass %{ add-highlighter window/sass ref sass }
+hook -group sass-highlight global WinSetOption filetype=sass %{
+    add-highlighter window/sass ref sass
+    hook -once -always window WinSetOption filetype=(?!sass).* %{ remove-highlighter window/sass }
+}
 
 hook global WinSetOption filetype=sass %{
     hook window ModeChange insert:.* -group sass-hooks  sass-filter-around-selections
     hook window InsertChar \n -group sass-indent sass-indent-on-new-line
     set-option buffer extra_word_chars '_' '-'
-}
 
-hook -group sass-highlight global WinSetOption filetype=(?!sass).* %{ remove-highlighter window/sass }
-
-hook global WinSetOption filetype=(?!sass).* %{
-    remove-hooks window sass-.+
+    hook -once -always window WinSetOption filetype=(?!sass).* %{ remove-hooks window sass-.+ }
 }
diff --git a/rc/extra/scheme.kak b/rc/extra/scheme.kak
index 4c38f8a5..ca3b5afe 100644
--- a/rc/extra/scheme.kak
+++ b/rc/extra/scheme.kak
@@ -114,18 +114,14 @@ evaluate-commands %sh{
 
 hook -group scheme-highlight global WinSetOption filetype=scheme %{
     add-highlighter window/scheme ref scheme
+    hook -once -always window WinSetOption filetype=(?!scheme).* %{ remove-highlighter window/scheme }
 }
 
-hook -group scheme-highlight global WinSetOption filetype=(?!scheme).* %{
-    remove-highlighter window/scheme
-}
 
 hook global WinSetOption filetype=scheme %{
     set-option buffer extra_word_chars '_' '-' '!' '%' '?' '<' '>' '='
     hook window InsertEnd  .* -group scheme-hooks  lisp-filter-around-selections
     hook window InsertChar \n -group scheme-indent lisp-indent-on-new-line
-}
 
-hook global WinSetOption filetype=(?!scheme).* %{
-    remove-hooks window scheme-.+
+    hook -once -always window WinSetOption filetype=(?!scheme).* %{ remove-hooks window scheme-.+ }
 }
diff --git a/rc/extra/scss.kak b/rc/extra/scss.kak
index 9dbd1fe3..abb8a13f 100644
--- a/rc/extra/scss.kak
+++ b/rc/extra/scss.kak
@@ -30,17 +30,16 @@ define-command -hidden scss-indent-on-closing-curly-brace css-indent-on-closing-
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group scss-highlight global WinSetOption filetype=scss %{ add-highlighter window/scss ref scss }
+hook -group scss-highlight global WinSetOption filetype=scss %{
+    add-highlighter window/scss ref scss
+    hook -once -always window WinSetOption filetype=(?!scss).* %{ remove-highlighter window/scss }
+}
 
 hook global WinSetOption filetype=scss %[
     hook window ModeChange insert:.* -group scss-hooks  scss-filter-around-selections
     hook window InsertChar \n -group scss-indent scss-indent-on-new-line
     hook window InsertChar \} -group scss-indent scss-indent-on-closing-curly-brace
     set-option buffer extra_word_chars '_' '-'
+
+    hook -once -always window WinSetOption filetype=(?!scss).* %{ remove-hooks window scss-.+ }
 ]
-
-hook -group scss-highlight global WinSetOption filetype=(?!scss).* %{ remove-highlighter window/scss }
-
-hook global WinSetOption filetype=(?!scss).* %{
-    remove-hooks window scss-.+
-}
diff --git a/rc/extra/taskpaper.kak b/rc/extra/taskpaper.kak
index 4b3c860e..4370bc14 100644
--- a/rc/extra/taskpaper.kak
+++ b/rc/extra/taskpaper.kak
@@ -38,9 +38,10 @@ define-command -hidden taskpaper-indent-on-new-line %{
 
 hook -group taskpaper-highlight global WinSetOption filetype=taskpaper %{
     add-highlighter window/taskpaper ref taskpaper
+    hook -once -always window WinSetOption filetype=(?!taskpaper).* %{ remove-highlighter window/taskpaper }
+}
+
+hook global WinSetOption filetype=taskpaper %{
     hook window InsertChar \n -group taskpaper-indent taskpaper-indent-on-new-line
-}
-hook -group taskpaper-highlight global WinSetOption filetype=(?!taskpaper).* %{
-    remove-highlighter window/taskpaper
-    remove-hooks window taskpaper-indent
+    hook -once -always window WinSetOption filetype=(?!taskpaper).* %{ remove-hooks window taskpaper-.+ }
 }
diff --git a/rc/extra/toml.kak b/rc/extra/toml.kak
index 5f5a217a..0528eef4 100644
--- a/rc/extra/toml.kak
+++ b/rc/extra/toml.kak
@@ -52,18 +52,12 @@ define-command -hidden toml-indent-on-new-line %{
 
 hook -group toml-highlight global WinSetOption filetype=toml %{
     add-highlighter window/toml ref toml
+    hook -once -always window WinSetOption filetype=(?!toml).* %{ remove-highlighter window/toml }
 }
 
 hook global WinSetOption filetype=toml %{
     hook window ModeChange insert:.* -group toml-hooks toml-filter-around-selections
     hook window InsertChar \n -group toml-indent toml-indent-on-new-line
-}
 
-hook -group toml-highlight global WinSetOption filetype=(?!toml).* %{
-    remove-highlighter window/toml
+    hook -once -always window WinSetOption filetype=(?!toml).* %{ remove-hooks window toml-.+ }
 }
-
-hook global WinSetOption filetype=(?!toml).* %{
-    remove-hooks window toml-.+
-}
-
diff --git a/rc/extra/troff.kak b/rc/extra/troff.kak
index 91755643..44fd6472 100644
--- a/rc/extra/troff.kak
+++ b/rc/extra/troff.kak
@@ -24,6 +24,7 @@ add-highlighter shared/troff/ regex '^\.B\s+([^\n]+)' 1:+b
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group troff-highlight global WinSetOption filetype=troff %{ add-highlighter window/troff ref troff }
-
-hook -group troff-highlight global WinSetOption filetype=(?!troff).* %{ remove-highlighter window/troff }
+hook -group troff-highlight global WinSetOption filetype=troff %{
+    add-highlighter window/troff ref troff
+    hook -once -always window WinSetOption filetype=(?!troff).* %{ remove-highlighter window/troff }
+}
diff --git a/rc/extra/tupfile.kak b/rc/extra/tupfile.kak
index 0f38180a..b8246148 100644
--- a/rc/extra/tupfile.kak
+++ b/rc/extra/tupfile.kak
@@ -27,5 +27,7 @@ add-highlighter shared/tupfile/code/ regex '`[^`\n]+`' 0:meta
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group tupfile-highlight global WinSetOption filetype=tupfile %{ add-highlighter window/tupfile ref tupfile }
-hook -group tupfile-highlight global WinSetOption filetype=(?!tupfile).* %{ remove-highlighter window/tupfile }
+hook -group tupfile-highlight global WinSetOption filetype=tupfile %{
+    add-highlighter window/tupfile ref tupfile
+    hook -once -always window WinSetOption filetype=(?!tupfile).* %{ remove-highlighter window/tupfile }
+}