fix: dash is also a valid identifier character

Author: Strokkur424

src/content/docs/adventure/minimessage/specification.md

@@ -4,7 +4,7 @@ slug: adventure/minimessage/specification
 description: A developer-facing specification of the MiniMessage format.
 tableOfContents:
   minHeadingLevel: 2
-  maxHeadingLevel: 5
+  maxHeadingLevel: 4
 ---
 
 This document outlines the MiniMessage format in detail to aid developers who wish to implement their own MiniMessage
@@ -189,7 +189,7 @@ This section defines miscellaneous behavior of common parts.
 
 ### Identifiers
 
-All identifiers must be lowercased and contain only alphanumerical characters or `_`. All identifiers
+All identifiers must be lowercased and contain only alphanumerical characters, `_`, or '-'. All identifiers
 used as named argument names should be unique.
 
 ### Quoting
@@ -285,5 +285,5 @@ alphanumeric          → "a" | "b" | "c" | "d"
                         | "y" | "z" | "_" | "0"
                         | "1" | "2" | "3" | "4"
                         | "5" | "6" | "7" | "8"
-                        | "9"
+                        | "9" | "-"
 ```

src/utils/shiki/mm.tmLanguage.json

@@ -4,7 +4,7 @@
   "patterns": [
     {
       "name": "meta.tag.mm",
-      "begin": "(</?)([a-z_0-9]+)",
+      "begin": "(</?)([a-z_0-9-]+)",
       "beginCaptures": {
         "1": { "name": "punctuation.definition.tag.mm" },
         "2": { "name": "constant.language.identifier.identifier.mm" }
@@ -40,7 +40,7 @@
         },
         {
           "name": "variable.parameter.named-argument.quoted.mm",
-          "match": "(\\s+)([a-z_0-9]+)(=)(\".*\")",
+          "match": "(\\s+)([a-z_0-9-]+)(=)(\".*\")",
           "captures": {
             "2": { "name": "keyword.reserved.identifier.mm" },
             "3": { "name": "punctuation.definition.identifier.mm" },
@@ -49,7 +49,7 @@
         },
         {
           "name": "variable.parameter.named-argument.single-quoted.mm",
-          "match": "(\\s+)([a-z_0-9]+)(=)('.*')",
+          "match": "(\\s+)([a-z_0-9-]+)(=)('.*')",
           "captures": {
             "2": { "name": "keyword.reserved.identifier.mm" },
             "3": { "name": "punctuation.definition.identifier.mm" },
@@ -58,7 +58,7 @@
         },
         {
           "name": "variable.parameter.named-argument.unquoted.mm",
-          "match": "(\\s+)([a-z_0-9]+)(=)([^ >:]*)",
+          "match": "(\\s+)([a-z_0-9-]+)(=)([^ >:]*)",
           "captures": {
             "2": { "name": "keyword.reserved.identifier.mm" },
             "3": { "name": "punctuation.definition.identifier.mm" },
@@ -67,14 +67,14 @@
         },
         {
           "name": "variable.parameter.inverse-flag.mm",
-          "match": "(\\s+)(![a-z_0-9]+)",
+          "match": "(\\s+)(![a-z_0-9-]+)",
           "captures": {
             "2": { "name": "support.type.inverse-flag.mm" }
           }
         },
         {
           "name": "variable.parameter.flag.mm",
-          "match": "(\\s+)([a-z_0-9]+)",
+          "match": "(\\s+)([a-z_0-9-]+)",
           "captures": {
             "2": { "name": "support.type.flag.mm" }
           }