syntax: fix TOML / add Kconfig syntax highlighting

misc/syntax/Makefile.am

@@ -50,6 +50,7 @@ SYNTAXFILES =			\
 	java.syntax		\
 	js.syntax		\
 	json.syntax		\
+	kconfig.syntax		\
 	kotlin.syntax		\
 	latex.syntax		\
 	lisp.syntax		\

misc/syntax/Syntax.in

@@ -366,5 +366,11 @@ include caddyfile.syntax
 file Dockerfile.\*$ Dockerfile
 include dockerfile.syntax
 
+file (/Kconfig(\\.[A-z0-9-]\+)\*|/Config\\.(in|src)(\\.[A-z0-9-]\+)\*|.\*\\.kconf(ig)?)$ Kconfig
+include kconfig.syntax
+
+file ..\*(\\.config(\\.[A-z0-9-]\+)\*|defconfig)$ Kconfig\soutput
+include properties.syntax
+
 file .\* unknown
 include unknown.syntax

misc/syntax/kconfig.syntax

@@ -0,0 +1,83 @@
+# Kconfig syntax
+#
+# Specifications:
+# https://docs.kernel.org/kbuild/kconfig-language.html
+# https://github.com/ulfalizer/Kconfiglib?tab=readme-ov-file#kconfig-extensions
+
+define kword     yellow
+define type      brightmagenta
+define property  brightmagenta
+define condition yellow
+define operator  brightcyan
+define brace     brightcyan
+define number    cyan
+define string    green
+define escape    brightgreen
+define comment   brown
+
+context default
+    keyword whole linestart \[\t\s\]config kword
+    keyword whole linestart \[\t\s\]menuconfig kword
+    keyword whole linestart \[\t\s\]menu kword
+    keyword whole linestart \[\t\s\]endmenu kword
+    keyword whole linestart \[\t\s\]mainmenu kword
+    keyword whole linestart \[\t\s\]choice kword
+    keyword whole linestart \[\t\s\]endchoice kword
+    keyword whole linestart \[\t\s\]comment kword
+    keyword whole linestart \[\t\s\]source kword
+    keyword whole linestart \[\t\s\]osource kword
+    keyword whole linestart \[\t\s\]rsource kword
+    keyword whole linestart \[\t\s\]orsource kword
+
+    keyword whole if condition
+    keyword whole linestart \[\t\s\]endif condition
+
+    keyword whole linestart \[\t\s\]bool type
+    keyword whole linestart \[\t\s\]tristate type
+    keyword whole linestart \[\t\s\]string type
+    keyword whole linestart \[\t\s\]hex type
+    keyword whole linestart \[\t\s\]int type
+
+    keyword whole linestart \[\t\s\]def_bool type
+    keyword whole linestart \[\t\s\]def_tristate type
+    keyword whole linestart \[\t\s\]def_string type
+    keyword whole linestart \[\t\s\]def_hex type
+    keyword whole linestart \[\t\s\]def_int type
+
+    keyword whole linestart \[\t\s\]prompt property
+    keyword whole linestart \[\t\s\]default property
+    keyword whole linestart \[\t\s\]depends\son property
+    keyword whole linestart \[\t\s\]select property
+    keyword whole linestart \[\t\s\]imply property
+    keyword whole linestart \[\t\s\]transitional property
+    keyword whole linestart \[\t\s\]visible\sif property
+    keyword whole linestart \[\t\s\]range property
+    keyword whole linestart \[\t\s\]option property
+    keyword whole linestart \[\t\s\]optional property
+    keyword whole linestart \[\t\s\]help property
+    keyword whole linestart \[\t\s\]---help--- property
+
+    keyword = operator
+    keyword > operator
+    keyword < operator
+    keyword >= operator
+    keyword <= operator
+    keyword || operator
+    keyword && operator
+    keyword ! operator
+
+    keyword ( brace
+    keyword ) brace
+
+    keyword whole 0x\{0123456789ABCDEFabcdef\}\[0123456789ABCDEFabcdef\] number
+    keyword whole \{0123456789\}\[0123456789\] number
+
+    # sometimes quotes are escaped in help like \"foo\" => do not start string context
+    keyword \\"
+
+context # \n comment
+    spellcheck
+
+context " " string
+    keyword \\" escape
+    keyword \\\\ escape

misc/syntax/toml.syntax

@@ -1,22 +1,54 @@
 # TOML: Tom's Obvious Minimal Language
+#
+# Specification: https://toml.io/en/v1.1.0
 
-context default white
+define table   yellow
+define key     cyan
+define equal   white
+define brace   brightcyan
+define bool    cyan
+define number  cyan
+define string  green
+define escape  brightgreen
+define comment brown
 
-# groups
-context [ \n brown
-    keyword [ yellow
-    keyword ] yellow
+context default
+    keyword linestart \[\t\s\][[*]] table
+    keyword linestart \[\t\s\][*] table
 
-# assignment
-context exclusive = \n write
-    keyword "*" brightgreen
-    keyword whole false brightcyan
-    keyword whole true brightcyan
-    keyword \{0123456789\} brightcyan
+    keyword = equal
+    keyword [ brace
+    keyword ] brace
+    keyword { brace
+    keyword } brace
 
-# comments
-context # \n brown
+    keyword linestart \[\t\s\]\{0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_-\}\[0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_-.\] key
+
+    keyword whole true bool
+    keyword whole false bool
+
+    keyword whole inf number
+    keyword whole nan number
+
+    keyword whole 0\{box\}\{0123456789ABCDEFabcdef\}\[0123456789ABCDEFabcdef_\] number
+    keyword whole \{0123456789\}\[0123456789_\]\{eE\}\[0123456789_\] number
+    keyword whole \{0123456789\}\[0123456789_\] number
+
+context # \n comment
     spellcheck
 
-# other strings
-context " " brightgreen
+context """ """ string
+    keyword \\" escape
+    keyword \\\\ escape
+    keyword \\\{uU\}\[0123456789\] escape
+    keyword \\\{bfnrt\} escape
+
+context ''' ''' string
+
+context " " string
+    keyword \\" escape
+    keyword \\\\ escape
+    keyword \\\{uU\}\[0123456789\] escape
+    keyword \\\{bfnrt\} escape
+
+context ' ' string