From 898d45f5d5e946c7613bcfd22c383ef1052f8741 Mon Sep 17 00:00:00 2001
From: Olivier Perret <Olivier.Perret@mailbox.org>
Date: Wed, 28 Nov 2018 10:39:15 +0100
Subject: [PATCH] Change cleanup of base/ languages to use a simpler hook -once

---
 rc/base/clojure.kak          | 13 ++++++-----
 rc/base/css.kak              | 13 ++++++-----
 rc/base/d.kak                | 11 +++++-----
 rc/base/etc.kak              | 42 ++++++++++++++++++++++++------------
 rc/base/fish.kak             | 11 +++++-----
 rc/base/gas.kak              | 13 +++++------
 rc/base/git.kak              | 10 ++++-----
 rc/base/go.kak               | 11 +++++-----
 rc/base/haskell.kak          | 11 +++++-----
 rc/base/html.kak             | 21 ++++++++++--------
 rc/base/ini.kak              |  6 ++++--
 rc/base/java.kak             | 12 ++++++-----
 rc/base/javascript.kak       | 18 +++++++---------
 rc/base/json.kak             | 11 +++++-----
 rc/base/julia.kak            |  6 ++++--
 rc/base/lisp.kak             | 11 +++++-----
 rc/base/lua.kak              | 18 ++++++++--------
 rc/base/mail.kak             |  6 ++++--
 rc/base/markdown.kak         | 12 +++++------
 rc/base/mercurial.kak        |  5 +----
 rc/base/ocaml.kak            |  7 +++---
 rc/base/perl.kak             | 11 +++++-----
 rc/base/restructuredtext.kak |  8 ++++---
 rc/base/ruby.kak             | 18 ++++++++--------
 rc/base/rust.kak             | 12 +++++------
 rc/base/scala.kak            | 13 ++++++-----
 rc/base/screen.kak           |  3 +--
 rc/base/sql.kak              |  5 +----
 rc/base/swift.kak            |  6 ++++--
 rc/base/yaml.kak             | 12 +++++------
 30 files changed, 179 insertions(+), 177 deletions(-)

diff --git a/rc/base/clojure.kak b/rc/base/clojure.kak
index cde4fc95..d4c88c59 100644
--- a/rc/base/clojure.kak
+++ b/rc/base/clojure.kak
@@ -187,15 +187,14 @@ define-command -hidden clojure-indent-on-new-line %{
 
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
-hook -group clojure-highlight global WinSetOption filetype=clojure %{ add-highlighter window/clojure ref clojure }
+hook -group clojure-highlight global WinSetOption filetype=clojure %{
+    add-highlighter window/clojure ref clojure
+    hook -once -always window WinSetOption filetype=(?!clojure).* %{ remove-highlighter window/clojure }
+}
 
 hook global WinSetOption filetype=clojure %[
     hook window ModeChange insert:.* -group clojure-hooks  clojure-filter-around-selections
     hook window InsertChar \n -group clojure-indent clojure-indent-on-new-line
+
+    hook -once -always window WinSetOption filetype=(?!clojure).* %{ remove-hooks window clojure-.+ }
 ]
-
-hook -group clojure-highlight global WinSetOption filetype=(?!clojure).* %{ remove-highlighter window/clojure }
-
-hook global WinSetOption filetype=(?!clojure).* %{
-    remove-hooks window clojure-.+
-}
diff --git a/rc/base/css.kak b/rc/base/css.kak
index d557d2cd..776bba37 100644
--- a/rc/base/css.kak
+++ b/rc/base/css.kak
@@ -61,17 +61,16 @@ define-command -hidden css-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group css-highlight global WinSetOption filetype=css %{ add-highlighter window/css ref css }
+hook -group css-highlight global WinSetOption filetype=css %{
+    add-highlighter window/css ref css
+    hook -once -always window WinSetOption filetype=(?!css).* %{ remove-highlighter window/css }
+}
 
 hook global WinSetOption filetype=css %[
     hook window ModeChange insert:.* -group css-hooks  css-filter-around-selections
     hook window InsertChar \n -group css-indent css-indent-on-new-line
     hook window InsertChar \} -group css-indent css-indent-on-closing-curly-brace
     set-option buffer extra_word_chars '_' '-'
+
+    hook -once -always window WinSetOption filetype=(?!css).* %{ remove-hooks window css-.+ }
 ]
-
-hook -group css-highlight global WinSetOption filetype=(?!css).* %{ remove-highlighter window/css }
-
-hook global WinSetOption filetype=(?!css).* %{
-    remove-hooks window css-.+
-}
diff --git a/rc/base/d.kak b/rc/base/d.kak
index 6c8d9a10..a611d1ef 100644
--- a/rc/base/d.kak
+++ b/rc/base/d.kak
@@ -116,7 +116,10 @@ define-command -hidden d-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group d-highlight global WinSetOption filetype=d %{ add-highlighter window/d ref d }
+hook -group d-highlight global WinSetOption filetype=d %{
+    add-highlighter window/d ref d
+    hook -once -always window WinSetOption filetype=(?!d).* %{ remove-highlighter window/d }
+}
 
 hook global WinSetOption filetype=d %{
     # cleanup trailing whitespaces when exiting insert mode
@@ -124,10 +127,6 @@ hook global WinSetOption filetype=d %{
     hook window InsertChar \n -group d-indent d-indent-on-new-line
     hook window InsertChar \{ -group d-indent d-indent-on-opening-curly-brace
     hook window InsertChar \} -group d-indent d-indent-on-closing-curly-brace
-}
 
-hook -group d-highlight global WinSetOption filetype=(?!d).* %{ remove-highlighter window/d }
-
-hook global WinSetOption filetype=(?!d).* %{
-    remove-hooks window d-.+
+    hook -once -always window WinSetOptionfiletype=(?!d).* %{ remove-hooks window d-.+ }
 }
diff --git a/rc/base/etc.kak b/rc/base/etc.kak
index 9087382f..22e28d62 100644
--- a/rc/base/etc.kak
+++ b/rc/base/etc.kak
@@ -17,49 +17,63 @@ add-highlighter shared/etc-resolv-conf group
 add-highlighter shared/etc-resolv-conf/ regex ^#.*?$ 0:comment
 add-highlighter shared/etc-resolv-conf/ regex ^(nameserver|server|domain|sortlist|options)[\s\t]+(.*?)$ 1:type 2:attribute
 
-hook -group etc-resolv-conf-highlight global WinSetOption filetype=etc-resolv-conf %{ add-highlighter window/etc-resolv-conf ref etc-resolv-conf }
-hook -group etc-resolv-conf-highlight global WinSetOption filetype=(?!etc-resolv-conf).* %{ remove-highlighter window/etc-resolv-conf }
+hook -group etc-resolv-conf-highlight global WinSetOption filetype=etc-resolv-conf %{
+    add-highlighter window/etc-resolv-conf ref etc-resolv-conf
+    hook -once -always window WinSetOption filetype=(?!etc-resolv-conf).* %{ remove-highlighter window/etc-resolv-conf }
+}
 
 ## /etc/hosts
 add-highlighter shared/etc-hosts group
 add-highlighter shared/etc-hosts/ regex ^(.+?)[\s\t]+?(.*?)$ 1:type 2:attribute
 add-highlighter shared/etc-hosts/ regex '#.*?$' 0:comment
 
-hook -group etc-hosts-highlight global WinSetOption filetype=etc-hosts %{ add-highlighter window/etc-hosts ref etc-hosts }
-hook -group etc-hosts-highlight global WinSetOption filetype=(?!etc-hosts).* %{ remove-highlighter window/etc-hosts }
+hook -group etc-hosts-highlight global WinSetOption filetype=etc-hosts %{
+    add-highlighter window/etc-hosts ref etc-hosts
+    hook -once -always window WinSetOption filetype=(?!etc-hosts).* %{ remove-highlighter window/etc-hosts }
+}
 
 ## /etc/fstab
 add-highlighter shared/etc-fstab group
 add-highlighter shared/etc-fstab/ regex ^(\S{1,})\s+?(\S{1,})\s+?(\S{1,})\s+?(\S{1,})\s+?(\S{1,})\s+?(\S{1,})(?:\s+)?$ 1:keyword 2:value 3:type 4:string 5:attribute 6:attribute
 add-highlighter shared/etc-fstab/ regex '#.*?$' 0:comment
 
-hook -group etc-fstab-highlight global WinSetOption filetype=etc-fstab %{ add-highlighter window/etc-fstab ref etc-fstab }
-hook -group etc-fstab-highlight global WinSetOption filetype=(?!etc-fstab).* %{ remove-highlighter window/etc-fstab }
+hook -group etc-fstab-highlight global WinSetOption filetype=etc-fstab %{
+    add-highlighter window/etc-fstab ref etc-fstab
+    hook -once -always window WinSetOption filetype=(?!etc-fstab).* %{ remove-highlighter window/etc-fstab }
+}
 
 ## /etc/group
 add-highlighter shared/etc-group group
 add-highlighter shared/etc-group/ regex ^(\S+?):(\S+?)?:(\S+?)?:(\S+?)?$ 1:keyword 2:type 3:value 4:string
 
-hook -group etc-group-highlight global WinSetOption filetype=etc-group %{ add-highlighter window/etc-group ref etc-group }
-hook -group etc-group-highlight global WinSetOption filetype=(?!etc-group).* %{ remove-highlighter window/etc-group }
+hook -group etc-group-highlight global WinSetOption filetype=etc-group %{
+    add-highlighter window/etc-group ref etc-group
+    hook -once -always window WinSetOption filetype=(?!etc-group).* %{ remove-highlighter window/etc-group }
+}
 
 ## /etc/gshadow
 add-highlighter shared/etc-gshadow group
 add-highlighter shared/etc-gshadow/ regex ^(\S+?):(\S+?)?:(\S+?)?:(\S+?)?$ 1:keyword 2:type 3:value 4:string
 
-hook -group etc-gshadow-highlight global WinSetOption filetype=etc-gshadow %{ add-highlighter window/etc-gshadow ref etc-gshadow }
-hook -group etc-gshadow-highlight global WinSetOption filetype=(?!etc-gshadow).* %{ remove-highlighter window/etc-gshadow }
+hook -group etc-gshadow-highlight global WinSetOption filetype=etc-gshadow %{
+    add-highlighter window/etc-gshadow ref etc-gshadow
+    hook -once -always window WinSetOption filetype=(?!etc-gshadow).* %{ remove-highlighter window/etc-gshadow }
+}
 
 ## /etc/shadow
 add-highlighter shared/etc-shadow group
 add-highlighter shared/etc-shadow/ regex ^(\S+?):(\S+?):([0-9]+?):([0-9]+?)?:([0-9]+?)?:([0-9]+?)?:([0-9]+?)?:([0-9]+?)?:(.*?)?$ 1:keyword 2:type 3:value 4:value 5:value 6:value 7:value 8:value
 
-hook -group etc-shadow-highlight global WinSetOption filetype=etc-shadow %{ add-highlighter window/etc-shadow ref etc-shadow }
-hook -group etc-shadow-highlight global WinSetOption filetype=(?!etc-shadow).* %{ remove-highlighter window/etc-shadow }
+hook -group etc-shadow-highlight global WinSetOption filetype=etc-shadow %{
+    add-highlighter window/etc-shadow ref etc-shadow
+    hook -once -always window WinSetOption filetype=(?!etc-shadow).* %{ remove-highlighter window/etc-shadow }
+}
 
 ## /etc/passwd
 add-highlighter shared/etc-passwd group
 add-highlighter shared/etc-passwd/ regex ^(\S+?):(\S+?):([0-9]+?):([0-9]+?):(.*?)?:(.+?):(.+?)$ 1:keyword 2:type 3:value 4:value 5:string 6:attribute 7:attribute
 
-hook -group etc-passwd-highlight global WinSetOption filetype=etc-passwd %{ add-highlighter window/etc-passwd ref etc-passwd }
-hook -group etc-passwd-highlight global WinSetOption filetype=(?!etc-passwd).* %{ remove-highlighter window/etc-passwd }
+hook -group etc-passwd-highlight global WinSetOption filetype=etc-passwd %{
+    add-highlighter window/etc-passwd ref etc-passwd
+    hook -once -always window WinSetOption filetype=(?!etc-passwd).* %{ remove-highlighter window/etc-passwd }
+}
diff --git a/rc/base/fish.kak b/rc/base/fish.kak
index 06b55efc..fb3b4393 100644
--- a/rc/base/fish.kak
+++ b/rc/base/fish.kak
@@ -70,16 +70,15 @@ define-command -hidden fish-insert-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group fish-highlight global WinSetOption filetype=fish %{ add-highlighter window/fish ref fish }
+hook -group fish-highlight global WinSetOption filetype=fish %{
+    add-highlighter window/fish ref fish
+    hook -once -always window WinSetOption filetype=(?!fish).* %{ remove-highlighter window/fish }
+}
 
 hook global WinSetOption filetype=fish %{
     hook window InsertChar .* -group fish-indent fish-indent-on-char
     hook window InsertChar \n -group fish-insert fish-insert-on-new-line
     hook window InsertChar \n -group fish-indent fish-indent-on-new-line
-}
 
-hook -group fish-highlight global WinSetOption filetype=(?!fish).* %{ remove-highlighter window/fish }
-
-hook global WinSetOption filetype=(?!fish).* %{
-    remove-hooks window fish-.+
+    hook -once -always window WinSetOption filetype=(?!fish).* %{ remove-hooks window fish-.+ }
 }
diff --git a/rc/base/gas.kak b/rc/base/gas.kak
index ae71c95a..be9b3c42 100644
--- a/rc/base/gas.kak
+++ b/rc/base/gas.kak
@@ -4,7 +4,6 @@ hook global BufCreate .*\.(s|S|asm)$ %{
     set-option buffer filetype gas
 }
 
-
 add-highlighter shared/gas regions
 add-highlighter shared/gas/code default-region group
 add-highlighter shared/gas/string         region '"' (?<!\\)(\\\\)*"        fill string
@@ -81,14 +80,12 @@ define-command -hidden gas-indent-on-new-line %~
     >
 ~
 
-hook -group gas-highlight global WinSetOption filetype=gas %{ add-highlighter window/gas ref gas }
+hook -group gas-highlight global WinSetOption filetype=gas %{
+    add-highlighter window/gas ref gas
+    hook -once -always window WinSetOption filetype=(?!gas).* %{ remove-highlighter window/gas }
+}
 
 hook global WinSetOption filetype=gas %{
     hook window InsertChar \n -group gas-indent gas-indent-on-new-line
-}
-
-hook -group gas-highlight global WinSetOption filetype=(?!gas).* %{ remove-highlighter window/gas }
-
-hook global WinSetOption filetype=(?!gas).* %{
-    remove-hooks window gas-indent
+    hook -once -always window WinSetOption filetype=(?!gas).* %{ remove-hooks window gas-.+ }
 }
diff --git a/rc/base/git.kak b/rc/base/git.kak
index 1e5b4297..0256e761 100644
--- a/rc/base/git.kak
+++ b/rc/base/git.kak
@@ -9,12 +9,12 @@ hook global BufCreate .*(\.gitconfig|git/config) %{
 hook -group git-commit-highlight global WinSetOption filetype=git-commit %{
     add-highlighter window/git-commit-highlight regions
     add-highlighter window/git-commit-highlight/diff region '^diff --git' '^(?=diff --git)' ref diff # highlight potential diffs from the -v option
-    add-highlighter window/git-commit-highlight/comments region '^\h*#' '$' group 
+    add-highlighter window/git-commit-highlight/comments region '^\h*#' '$' group
     add-highlighter window/git-commit-highlight/comments/ fill cyan,default
     add-highlighter window/git-commit-highlight/comments/ regex "\b(?:(modified)|(deleted)|(new file)|(renamed|copied)):([^\n]*)$" 1:yellow 2:red 3:green 4:blue 5:magenta
-}
 
-hook -group git-commit-highlight global WinSetOption filetype=(?!git-commit).* %{ remove-highlighter window/git-commit-highlight }
+    hook -once -always window WinSetOption filetype=(?!git-commit).* %{ remove-highlighter window/git-commit-highlight }
+}
 
 hook global BufCreate .*git-rebase-todo %{
     set-option buffer filetype git-rebase
@@ -24,6 +24,6 @@ hook -group git-rebase-highlight global WinSetOption filetype=git-rebase %{
     add-highlighter window/git-rebase-highlight group
     add-highlighter window/git-rebase-highlight/ regex "#[^\n]*\n" 0:cyan,default
     add-highlighter window/git-rebase-highlight/ regex "^(pick|edit|reword|squash|fixup|exec|drop|label|reset|merge|[persfxdltm]) (\w+)" 1:green 2:magenta
-}
 
-hook -group git-rebase-highlight global WinSetOption filetype=(?!git-rebase).* %{ remove-highlighter window/git-rebase-highlight }
+    hook -once -always window WinSetOption filetype=(?!git-rebase).* %{ remove-highlighter window/git-rebase-highlight }
+}
diff --git a/rc/base/go.kak b/rc/base/go.kak
index d03aa80c..aa62d113 100644
--- a/rc/base/go.kak
+++ b/rc/base/go.kak
@@ -81,7 +81,10 @@ define-command -hidden go-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group go-highlight global WinSetOption filetype=go %{ add-highlighter window/go ref go }
+hook -group go-highlight global WinSetOption filetype=go %{
+    add-highlighter window/go ref go
+    hook -once -always window WinSetOption filetype=(?!go).* %{ remove-highlighter window/go }
+}
 
 hook global WinSetOption filetype=go %{
     # cleanup trailing whitespaces when exiting insert mode
@@ -89,10 +92,6 @@ hook global WinSetOption filetype=go %{
     hook window InsertChar \n -group go-indent go-indent-on-new-line
     hook window InsertChar \{ -group go-indent go-indent-on-opening-curly-brace
     hook window InsertChar \} -group go-indent go-indent-on-closing-curly-brace
-}
 
-hook -group go-highlight global WinSetOption filetype=(?!go).* %{ remove-highlighter window/go }
-
-hook global WinSetOption filetype=(?!go).* %{
-    remove-hooks window go-.+
+    hook -once -always window WinSetOption filetype=(?!go).* %{ remove-hooks window go-.+ }
 }
diff --git a/rc/base/haskell.kak b/rc/base/haskell.kak
index d3ad2215..b72c2561 100644
--- a/rc/base/haskell.kak
+++ b/rc/base/haskell.kak
@@ -91,16 +91,15 @@ define-command -hidden haskell-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group haskell-highlight global WinSetOption filetype=haskell %{ add-highlighter window/haskell ref haskell }
+hook -group haskell-highlight global WinSetOption filetype=haskell %{
+    add-highlighter window/haskell ref haskell
+    hook -once -always window WinSetOption filetype=(?!haskell).* %{ remove-highlighter window/haskell }
+}
 
 hook global WinSetOption filetype=haskell %{
     set-option window extra_word_chars '_' "'"
     hook window ModeChange insert:.* -group haskell-hooks  haskell-filter-around-selections
     hook window InsertChar \n -group haskell-indent haskell-indent-on-new-line
-}
 
-hook -group haskell-highlight global WinSetOption filetype=(?!haskell).* %{ remove-highlighter window/haskell }
-
-hook global WinSetOption filetype=(?!haskell).* %{
-    remove-hooks window haskell-.+
+    hook -once -always window WinSetOption filetype=(?!haskell).* %{ remove-hooks window haskell-.+ }
 }
diff --git a/rc/base/html.kak b/rc/base/html.kak
index ecf330f1..a91808f1 100644
--- a/rc/base/html.kak
+++ b/rc/base/html.kak
@@ -57,16 +57,19 @@ define-command -hidden html-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group html-highlight global WinSetOption filetype=(?:html|xml) %{ add-highlighter window/html ref html }
-
-hook global WinSetOption filetype=(?:html|xml) %{
-    hook window ModeChange insert:.* -group html-hooks  html-filter-around-selections
-    hook window InsertChar '>' -group html-indent html-indent-on-greater-than
-    hook window InsertChar \n -group html-indent html-indent-on-new-line
+hook -group html-highlight global WinSetOption filetype=(html|xml) %{
+    add-highlighter "window/%val{hook_param_capture_1}" ref html
+    hook -once -always window WinSetOption "filetype=(?!%val{hook_param_capture_1}).*" "
+        remove-highlighter ""window/%val{hook_param_capture_1}""
+    "
 }
 
-hook -group html-highlight global WinSetOption filetype=(?!html)(?!xml).* %{ remove-highlighter window/html }
+hook global WinSetOption filetype=(html|xml) %{
+    hook window ModeChange insert:.* -group "%val{hook_param_capture_1}-hooks"  html-filter-around-selections
+    hook window InsertChar '>' -group "%val{hook_param_capture_1}-indent" html-indent-on-greater-than
+    hook window InsertChar \n -group "%val{hook_param_capture_1}-indent" html-indent-on-new-line
 
-hook global WinSetOption filetype=(?!html)(?!xml).* %{
-    remove-hooks window html-.+
+    hook -once -always window WinSetOption "filetype=(?!%val{hook_param_capture_1}).*" "
+        remove-hooks window ""%val{hook_param_capture_1}-.+""
+    "
 }
diff --git a/rc/base/ini.kak b/rc/base/ini.kak
index 383bf70e..1bfca3c2 100644
--- a/rc/base/ini.kak
+++ b/rc/base/ini.kak
@@ -9,5 +9,7 @@ add-highlighter shared/ini/comment region '(^|\h)\K[#;]' $ fill comment
 add-highlighter shared/ini/code/ regex "^\h*\[[^\]]*\]" 0:title
 add-highlighter shared/ini/code/ regex "^\h*([^\[][^=\n]*)=([^\n]*)" 1:variable 2:value
 
-hook -group ini-highlight global WinSetOption filetype=ini %{ add-highlighter window/ini ref ini }
-hook -group ini-highlight global WinSetOption filetype=(?!ini).* %{ remove-highlighter window/ini }
+hook -group ini-highlight global WinSetOption filetype=ini %{
+    add-highlighter window/ini ref ini
+    hook -once -always window WinSetOption filetype=(?!ini).* %{ remove-highlighter window/ini }
+}
diff --git a/rc/base/java.kak b/rc/base/java.kak
index b71f57cd..418abe03 100644
--- a/rc/base/java.kak
+++ b/rc/base/java.kak
@@ -48,16 +48,18 @@ define-command -hidden java-indent-on-closing-curly-brace %[
 
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook -group java-highlight global WinSetOption filetype=java %{
+    add-highlighter window/java ref java
+    hook -once -always window WinSetOption filetype=(?!java).* %{ remove-highlighter window/java }
+}
+
 hook global WinSetOption filetype=java %{
     # cleanup trailing whitespaces when exiting insert mode
     hook window ModeChange insert:.* -group java-hooks %{ try %{ execute-keys -draft <a-x>s^\h+$<ret>d } }
     hook window InsertChar \n -group java-indent java-indent-on-new-line
     hook window InsertChar \{ -group java-indent java-indent-on-opening-curly-brace
     hook window InsertChar \} -group java-indent java-indent-on-closing-curly-brace
-}
 
-hook global WinSetOption filetype=(?!java).* %{
-    remove-hooks window java-.+
+    hook -once -always window WinSetOption filetype=(?!java).* %{ remove-hooks window java-.+ }
 }
-hook -group java-highlight global WinSetOption filetype=java %{ add-highlighter window/java ref java }
-hook -group java-highlight global WinSetOption filetype=(?!java).* %{ remove-highlighter window/java }
diff --git a/rc/base/javascript.kak b/rc/base/javascript.kak
index 4b700a5d..b2d48480 100644
--- a/rc/base/javascript.kak
+++ b/rc/base/javascript.kak
@@ -72,7 +72,6 @@ define-command -hidden init-javascript-filetype -params 1 %~
 
     add-highlighter "shared/%arg{1}/jsx/tag"  region -recurse <  <(?=[/a-zA-Z]) (?<!=)> regions
     add-highlighter "shared/%arg{1}/jsx/expr" region -recurse \{ \{             \}      ref %arg{1}
-        
 
     add-highlighter "shared/%arg{1}/jsx/tag/base" default-region group
     add-highlighter "shared/%arg{1}/jsx/tag/double_string" region =\K" (?<!\\)(\\\\)*" fill string
@@ -93,19 +92,18 @@ define-command -hidden init-javascript-filetype -params 1 %~
     # Initialization
     # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-    hook -group "%arg{1}-highlight" global WinSetOption "filetype=%arg{1}" "add-highlighter window/%arg{1} ref %arg{1}"
+    hook -group "%arg{1}-highlight" global WinSetOption "filetype=%arg{1}" "
+        add-highlighter window/%arg{1} ref %arg{1}
 
-    hook global WinSetOption "filetype=%arg{1}" "
-        hook window ModeChange insert:.* -group %arg{1}-hooks  javascript-filter-around-selections
-        hook window InsertChar .* -group %arg{1}-indent javascript-indent-on-char
-        hook window InsertChar \n -group %arg{1}-indent javascript-indent-on-new-line
+        hook -once -always window WinSetOption filetype=(?!%arg{1}).* %%{ remove-highlighter window/%arg{1} }
     "
 
-    hook -group "%arg{1}-highlight" global WinSetOption "filetype=(?!%arg{1}).*" "remove-highlighter window/%arg{1}"
+    hook global WinSetOption "filetype=%arg{1}" "
+        hook window ModeChange insert:.* -group %arg{1}-hooks javascript-filter-around-selections
+        hook window InsertChar .* -group %arg{1}-indent javascript-indent-on-char
+        hook window InsertChar \n -group %arg{1}-indent javascript-indent-on-new-line
 
-    hook global WinSetOption "filetype=(?!%arg{1}).*" "
-        remove-hooks window %arg{1}-indent
-        remove-hooks window %arg{1}-hooks
+        hook -once -always window WinSetOption filetype=(?!%arg{1}).* %%{ remove-hooks window %arg{1}-.+ }
     "
 ~
 
diff --git a/rc/base/json.kak b/rc/base/json.kak
index d1fbad90..d5a53afd 100644
--- a/rc/base/json.kak
+++ b/rc/base/json.kak
@@ -46,16 +46,15 @@ define-command -hidden json-indent-on-new-line %<
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group json-highlight global WinSetOption filetype=json %{ add-highlighter window/json ref json }
+hook -group json-highlight global WinSetOption filetype=json %{
+    add-highlighter window/json ref json
+    hook -once -always window WinSetOption filetype=(?!json).* %{ remove-highlighter window/json }
+}
 
 hook global WinSetOption filetype=json %{
     hook window ModeChange insert:.* -group json-hooks  json-filter-around-selections
     hook window InsertChar .* -group json-indent json-indent-on-char
     hook window InsertChar \n -group json-indent json-indent-on-new-line
-}
 
-hook -group json-highlight global WinSetOption filetype=(?!json).* %{ remove-highlighter window/json }
-
-hook global WinSetOption filetype=(?!json).* %{
-    remove-hooks window json-.+
+    hook -once -always window WinSetOption filetype=(?!json).* %{ remove-hooks window json-.+ }
 }
diff --git a/rc/base/julia.kak b/rc/base/julia.kak
index 2c50aade..19ac8d76 100644
--- a/rc/base/julia.kak
+++ b/rc/base/julia.kak
@@ -24,5 +24,7 @@ add-highlighter shared/julia/code/ regex \b(Number|Real|BigInt|Integer|UInt|UInt
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group julia-highlight global WinSetOption filetype=julia %{ add-highlighter window/julia ref julia }
-hook -group julia-highlight global WinSetOption filetype=(?!julia).* %{ remove-highlighter window/julia }
+hook -group julia-highlight global WinSetOption filetype=julia %{
+    add-highlighter window/julia ref julia
+    hook -once -always window WinSetOption filetype=(?!julia).* %{ remove-highlighter window/julia }
+}
diff --git a/rc/base/lisp.kak b/rc/base/lisp.kak
index c8bd9ba9..ef6f2285 100644
--- a/rc/base/lisp.kak
+++ b/rc/base/lisp.kak
@@ -57,15 +57,14 @@ define-command -hidden lisp-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group lisp-highlight global WinSetOption filetype=lisp %{ add-highlighter window/lisp ref lisp }
+hook -group lisp-highlight global WinSetOption filetype=lisp %{
+    add-highlighter window/lisp ref lisp
+    hook -once -always window WinSetOption filetype=(?!lisp).* %{ remove-highlighter window/lisp }
+}
 
 hook global WinSetOption filetype=lisp %{
     hook window ModeChange insert:.* -group lisp-hooks  lisp-filter-around-selections
     hook window InsertChar \n -group lisp-indent lisp-indent-on-new-line
-}
 
-hook -group lisp-highlight global WinSetOption filetype=(?!lisp).* %{ remove-highlighter window/lisp }
-
-hook global WinSetOption filetype=(?!lisp).* %{
-    remove-hooks window lisp-.+
+    hook -once -always window WinSetOption filetype=(?!lisp).* %{ remove-hooks window lisp-.+ }
 }
diff --git a/rc/base/lua.kak b/rc/base/lua.kak
index 8b69009f..66e33091 100644
--- a/rc/base/lua.kak
+++ b/rc/base/lua.kak
@@ -84,7 +84,10 @@ define-command -hidden lua-insert-on-new-line %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group lua-highlight global WinSetOption filetype=lua %{ add-highlighter window/lua ref lua }
+hook -group lua-highlight global WinSetOption filetype=lua %{
+    add-highlighter window/lua ref lua
+    hook -once -always window WinSetOption filetype=(?!lua).* %{ remove-highlighter window/lua }
+}
 
 hook global WinSetOption filetype=lua %{
     hook window InsertChar .* -group lua-indent lua-indent-on-char
@@ -92,12 +95,9 @@ hook global WinSetOption filetype=lua %{
     hook window InsertChar \n -group lua-insert lua-insert-on-new-line
 
     alias window alt lua-alternative-file
-}
-
-hook -group lua-highlight global WinSetOption filetype=(?!lua).* %{ remove-highlighter window/lua }
-
-hook global WinSetOption filetype=(?!lua).* %{
-    remove-hooks window lua-.+
-
-    unalias window alt lua-alternative-file
+
+    hook -once -always window WinSetOption filetype=(?!lua).* %{
+        remove-hooks window lua-.+
+        unalias window alt lua-alternative-file
+    }
 }
diff --git a/rc/base/mail.kak b/rc/base/mail.kak
index b09df797..f0da6eee 100644
--- a/rc/base/mail.kak
+++ b/rc/base/mail.kak
@@ -7,5 +7,7 @@ add-highlighter shared/mail/ regex ^(From|To|Cc|Bcc|Subject|Reply-To|In-Reply-To
 add-highlighter shared/mail/ regex <[^@>]+@.*?> 0:string
 add-highlighter shared/mail/ regex ^>.*?$ 0:comment
 
-hook -group mail-highlight global WinSetOption filetype=mail %{ add-highlighter window/mail ref mail }
-hook -group mail-highlight global WinSetOption filetype=(?!mail).* %{ remove-highlighter window/mail }
+hook -group mail-highlight global WinSetOption filetype=mail %{
+    add-highlighter window/mail ref mail
+    hook -once -always window WinSetOption filetype=(?!mail).* %{ remove-highlighter window/mail }
+}
diff --git a/rc/base/markdown.kak b/rc/base/markdown.kak
index 9ffca281..85c0a307 100644
--- a/rc/base/markdown.kak
+++ b/rc/base/markdown.kak
@@ -75,14 +75,12 @@ define-command -hidden markdown-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group markdown-highlight global WinSetOption filetype=markdown %{ add-highlighter window/markdown ref markdown }
+hook -group markdown-highlight global WinSetOption filetype=markdown %{
+    add-highlighter window/markdown ref markdown
+    hook -once -always window WinSetOption filetype=(?!markdown).* %{ remove-highlighter window/markdown }
+}
 
 hook global WinSetOption filetype=markdown %{
     hook window InsertChar \n -group markdown-indent markdown-indent-on-new-line
-}
-
-hook -group markdown-highlight global WinSetOption filetype=(?!markdown).* %{ remove-highlighter window/markdown }
-
-hook global WinSetOption filetype=(?!markdown).* %{
-    remove-hooks window markdown-indent
+    hook -once -always window WinSetOption filetype=(?!markdown).* %{ remove-hooks window markdown-.+ }
 }
diff --git a/rc/base/mercurial.kak b/rc/base/mercurial.kak
index 3480428a..920fe541 100644
--- a/rc/base/mercurial.kak
+++ b/rc/base/mercurial.kak
@@ -13,14 +13,11 @@ hook global BufCreate .*hg-editor-\w+\.txt$ %{
     set-option buffer filetype hg-commit
 }
 
-hook -group hg-commit-highlight global WinSetOption filetype=(?!hg-commit).* %{
-    remove-highlighter window/hg-commit-highlight
-}
-
 # Highlighters
 # ‾‾‾‾‾‾‾‾‾‾‾‾
 
 hook -group hg-commit-highlight global WinSetOption filetype=hg-commit %{
     add-highlighter window/ group hg-commit-highlight
     add-highlighter window/hg-commit-highlight regex '^HG:[^\n]*' 0:MercurialCommitComment
+    hook -once -always window WinSetOption filetype=(?!hg-commit).* %{ remove-highlighter window/hg-commit-highlight }
 }
diff --git a/rc/base/ocaml.kak b/rc/base/ocaml.kak
index 026bac7b..6a514f9f 100644
--- a/rc/base/ocaml.kak
+++ b/rc/base/ocaml.kak
@@ -19,9 +19,10 @@ add-highlighter shared/ocaml/comment region \Q(* \Q*) fill comment
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group ocaml-highlight global WinSetOption filetype=ocaml %{ add-highlighter window/ocaml ref ocaml }
-
-hook -group ocaml-highlight global WinSetOption filetype=(?!ocaml).* %{ remove-highlighter window/ocaml }
+hook -group ocaml-highlight global WinSetOption filetype=ocaml %{
+    add-highlighter window/ocaml ref ocaml
+    hook -once -always window WinSetOption filetype=(?!ocaml).* %{ remove-highlighter window/ocaml }
+}
 
 # Macro
 # ‾‾‾‾‾
diff --git a/rc/base/perl.kak b/rc/base/perl.kak
index 54f147aa..7ef3346a 100644
--- a/rc/base/perl.kak
+++ b/rc/base/perl.kak
@@ -98,7 +98,10 @@ define-command -hidden perl-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group perl-highlight global WinSetOption filetype=perl %{ add-highlighter window/perl ref perl }
+hook -group perl-highlight global WinSetOption filetype=perl %{
+    add-highlighter window/perl ref perl
+    hook -once -always window WinSetOption filetype=(?!perl).* %{ remove-highlighter window/perl }
+}
 
 hook global WinSetOption filetype=perl %{
     # cleanup trailing whitespaces when exiting insert mode
@@ -106,10 +109,6 @@ hook global WinSetOption filetype=perl %{
     hook window InsertChar \n -group perl-indent perl-indent-on-new-line
     hook window InsertChar \{ -group perl-indent perl-indent-on-opening-curly-brace
     hook window InsertChar \} -group perl-indent perl-indent-on-closing-curly-brace
-}
 
-hook -group perl-highlight global WinSetOption filetype=(?!perl).* %{ remove-highlighter window/perl }
-
-hook global WinSetOption filetype=(?!perl).* %{
-    remove-hooks window perl-.+
+    hook -once -always window WinSetOption filetype=(?!perl).* %{ remove-hooks window perl-.+ }
 }
diff --git a/rc/base/restructuredtext.kak b/rc/base/restructuredtext.kak
index 4c072c7f..f11fe560 100644
--- a/rc/base/restructuredtext.kak
+++ b/rc/base/restructuredtext.kak
@@ -67,6 +67,8 @@ add-highlighter shared/restructuredtext/content/ regex [^`](``([^\s`]|([^\s`][^`
 
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
-#
-hook -group restructuredtext-highlight global WinSetOption filetype=restructuredtext %{ add-highlighter window/restructuredtext ref restructuredtext }
-hook -group restructuredtext-highlight global WinSetOption filetype=(?!restructuredtext).* %{ remove-highlighter window/restructuredtext }
+
+hook -group restructuredtext-highlight global WinSetOption filetype=restructuredtext %{
+    add-highlighter window/restructuredtext ref restructuredtext
+    hook -once -always window WinSetOption filetype=(?!restructuredtext).* %{ remove-highlighter window/restructuredtext }
+}
diff --git a/rc/base/ruby.kak b/rc/base/ruby.kak
index 6c9c653a..7d4680f5 100644
--- a/rc/base/ruby.kak
+++ b/rc/base/ruby.kak
@@ -144,7 +144,10 @@ define-command -hidden ruby-insert-on-new-line %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group ruby-highlight global WinSetOption filetype=ruby %{ add-highlighter window/ruby ref ruby }
+hook -group ruby-highlight global WinSetOption filetype=ruby %{
+    add-highlighter window/ruby ref ruby
+    hook -once -always window WinSetOption filetype=(?!ruby).* %{ remove-highlighter window/ruby }
+}
 
 hook global WinSetOption filetype=ruby %{
     hook window InsertChar .* -group ruby-indent ruby-indent-on-char
@@ -152,12 +155,9 @@ hook global WinSetOption filetype=ruby %{
     hook window InsertChar \n -group ruby-indent ruby-indent-on-new-line
 
     alias window alt ruby-alternative-file
-}
-
-hook -group ruby-highlight global WinSetOption filetype=(?!ruby).* %{ remove-highlighter window/ruby }
-
-hook global WinSetOption filetype=(?!ruby).* %{
-    remove-hooks window ruby-.+
-
-    unalias window alt ruby-alternative-file
+
+    hook -once -always window WinSetOption filetype=(?!ruby).* %{
+        remove-hooks window ruby-.+
+        unalias window alt ruby-alternative-file
+    }
 }
diff --git a/rc/base/rust.kak b/rc/base/rust.kak
index cf9eb83e..dbe38eae 100644
--- a/rc/base/rust.kak
+++ b/rc/base/rust.kak
@@ -74,17 +74,15 @@ define-command -hidden rust-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group rust-highlight global WinSetOption filetype=rust %{ add-highlighter window/rust ref rust }
+hook -group rust-highlight global WinSetOption filetype=rust %{
+    add-highlighter window/rust ref rust
+    hook -once -always window WinSetOption filetype=(?!rust).* %{ remove-highlighter window/rust }
+}
 
 hook global WinSetOption filetype=rust %[
     hook window ModeChange insert:.* -group rust-hooks  rust-filter-around-selections
     hook window InsertChar \n -group rust-indent rust-indent-on-new-line
     hook window InsertChar \{ -group rust-indent rust-indent-on-opening-curly-brace
     hook window InsertChar \} -group rust-indent rust-indent-on-closing-curly-brace
+    hook -once -always window WinSetOption filetype=(?!rust).* %{ remove-hooks window rust-.+ }
 ]
-
-hook -group rust-highlight global WinSetOption filetype=(?!rust).* %{ remove-highlighter window/rust }
-
-hook global WinSetOption filetype=(?!rust).* %{
-    remove-hooks window rust-.+
-}
diff --git a/rc/base/scala.kak b/rc/base/scala.kak
index 1b853879..d85058fc 100644
--- a/rc/base/scala.kak
+++ b/rc/base/scala.kak
@@ -61,16 +61,15 @@ define-command -hidden scala-indent-on-closing-curly-brace %[
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group scala-highlight global WinSetOption filetype=scala %{ add-highlighter window/scala ref scala }
+hook -group scala-highlight global WinSetOption filetype=scala %{
+    add-highlighter window/scala ref scala
+    hook -once -always window WinSetOption filetype=(?!scala).* %{ remove-highlighter window/scala }
+}
 
 hook global WinSetOption filetype=scala %[
     hook window ModeChange insert:.* -group scala-hooks  scala-filter-around-selections
     hook window InsertChar \n -group scala-indent scala-indent-on-new-line
     hook window InsertChar \} -group scala-indent scala-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=(?!scala).* %{ remove-hooks window scala-.+ }
 ]
-
-hook -group scala-highlight global WinSetOption filetype=(?!scala).* %{ remove-highlighter window/scala }
-
-hook global WinSetOption filetype=(?!scala).* %{
-    remove-hooks window scala-.+
-}
diff --git a/rc/base/screen.kak b/rc/base/screen.kak
index 9df694ba..66a8db5d 100644
--- a/rc/base/screen.kak
+++ b/rc/base/screen.kak
@@ -1,6 +1,6 @@
 # http://gnu.org/software/screen/
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
- 
+
 hook -group GNUscreen global KakBegin .* %sh{
     [ -z "${STY}" ] && exit
     echo "
@@ -9,7 +9,6 @@ hook -group GNUscreen global KakBegin .* %sh{
     "
 }
 
-
 define-command screen-new-vertical -params .. -command-completion -docstring "Split the current pane into two, left and right" %{
      nop %sh{
         tty="$(ps -o tty ${kak_client_pid} | tail -n 1)"
diff --git a/rc/base/sql.kak b/rc/base/sql.kak
index b5069225..0e0534e3 100644
--- a/rc/base/sql.kak
+++ b/rc/base/sql.kak
@@ -103,8 +103,5 @@ add-highlighter shared/sql/code/ regex \b\d+(?:\.\d+)?\b 0:value
 
 hook -group sql-highlight global WinSetOption filetype=sql %{
     add-highlighter window/sql ref sql
-}
-
-hook -group sql-highlight global WinSetOption filetype=(?!sql).* %{
-    remove-highlighter window/sql
+    hook -once -always window WinSetOption filetype=(?!sql).* %{ remove-highlighter window/sql }
 }
diff --git a/rc/base/swift.kak b/rc/base/swift.kak
index bbd8d34d..97ef5e9a 100644
--- a/rc/base/swift.kak
+++ b/rc/base/swift.kak
@@ -22,5 +22,7 @@ add-highlighter shared/swift/code/ regex "\b(Bool|String|UInt|UInt16|UInt32|UInt
 add-highlighter shared/swift/code/ regex "\b(IBAction|IBOutlet)\b" 0:attribute
 add-highlighter shared/swift/code/ regex "@\w+\b" 0:attribute
 
-hook -group swift-highlight global WinSetOption filetype=swift %{ add-highlighter window/swift ref swift }
-hook -group swift-highlight global WinSetOption filetype=(?!swift).* %{ remove-highlighter window/swift }
+hook -group swift-highlight global WinSetOption filetype=swift %{
+    add-highlighter window/swift ref swift
+    hook -once -always window WinSetOption filetype=(?!swift).* %{ remove-highlighter window/swift }
+}
diff --git a/rc/base/yaml.kak b/rc/base/yaml.kak
index 18192533..82b0c7ba 100644
--- a/rc/base/yaml.kak
+++ b/rc/base/yaml.kak
@@ -46,15 +46,13 @@ define-command -hidden yaml-indent-on-new-line %{
 # Initialization
 # ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
 
-hook -group yaml-highlight global WinSetOption filetype=yaml %{ add-highlighter window/yaml ref yaml }
+hook -group yaml-highlight global WinSetOption filetype=yaml %{
+    add-highlighter window/yaml ref yaml
+    hook -once -always window WinSetOption filetype=(?!yaml).* %{ remove-highlighter window/yaml }
+}
 
 hook global WinSetOption filetype=yaml %{
     hook window ModeChange insert:.* -group yaml-hooks  yaml-filter-around-selections
     hook window InsertChar \n -group yaml-indent yaml-indent-on-new-line
-}
-
-hook -group yaml-highlight global WinSetOption filetype=(?!yaml).* %{ remove-highlighter window/yaml }
-
-hook global WinSetOption filetype=(?!yaml).* %{
-    remove-hooks window yaml-.+
+    hook -once -always window WinSetOption filetype=(?!yaml).* %{ remove-hooks window yaml-.+ }
 }