add Kap support

src/webpage/highlighter/clike/langs.json

@@ -93,5 +93,16 @@
 	"hashComments": true,
 	"doubleSlashComments": false,
 	"multilineSlashComments": false
+},
+{
+	"names":["kap"],
+	"keywords":["!", "#", "%", "&", "*", "+", ",", "-", "/", "<", "=", ">", "?", "^", "|",
+            "~", "¨", "×", "÷", "↑", "→", "↓", "∊", "∘", "∧", "∨", "∩", "∪", "∼", "≠", "≡",
+            "≢", "≤", "≥", "⊂", "⊃", "⊖", "⊢", "⊣", "⊤", "⊥", "⋆", "⌈", "⌊", "⌶", "⌷", "⌹",
+            "⌻", "⌽", "⌿", "⍀", "⍉", "⍋", "⍎", "⍒", "⍕", "⍞", "⍟", "⍠", "⍣", "⍤",
+            "⍨", "⍪", "⍫", "⍱", "⍲", "⍳", "⍴", "⍵", "⍶", "⍷", "⍸", "⍹", "⍺", "◊",
+            "○", "$", "¥", "χ", "\\", "∵", "⍓", "⫽", "⑊", "⊆", "⊇", "⍥", "∥", "⍛", "˝",
+            "⍢", "√", "∙", "⌸", "≬", "⍮", "⫇", "…", "⍰","and","or","while", "if", "else", "when", "⋄"],
+	"customComment":"⍝"
 }
 ]

src/webpage/highlighter/clike/lex.ts

@@ -9,6 +9,7 @@ interface clikeConf {
 	multilineSlashComments?: boolean;
 	JSLikeTemplateStrings?: boolean;
 	multiLine?: string;
+	customComment?: string;
 }
 function regex(config: clikeConf): RegExp {
 	const conds = [] as string[];
@@ -30,6 +31,9 @@ function regex(config: clikeConf): RegExp {
 	if (config.hashComments) {
 		conds.push("#.*");
 	}
+	if (config.customComment) {
+		conds.push(config.customComment + ".*");
+	}
 	if (config.doubleSlashComments) {
 		conds.push("\\/\\/.*");
 	}
@@ -143,6 +147,11 @@ function* lex(code: string, config: clikeConf) {
 				type: hcolors.comment,
 				content: lex,
 			};
+		} else if (config.customComment && lex.startsWith(config.customComment)) {
+			yield {
+				type: hcolors.comment,
+				content: lex,
+			};
 		} else if (lex.startsWith("`") && config.JSLikeTemplateStrings) {
 			yield {
 				type: hcolors.string,