some fixes and small changes

utils.go

@@ -1,6 +1,10 @@
 package laniakea
 
-import "git.nix13.pw/scuroneko/laniakea/utils"
+import (
+	"strings"
+
+	"git.nix13.pw/scuroneko/laniakea/utils"
+)
 
 func Ptr[T any](v T) *T { return &v }
 func Val[T any](p *T, def T) T {
@@ -9,7 +13,39 @@ func Val[T any](p *T, def T) T {
 	}
 	return def
 }
-func EscapeMarkdown(s string) string   { return utils.EscapeMarkdown(s) }
-func EscapeMarkdownV2(s string) string { return utils.EscapeMarkdownV2(s) }
+
+// EscapeMarkdown
+// Deprecated. Use MarkdownV2
+func EscapeMarkdown(s string) string {
+	s = strings.ReplaceAll(s, "_", `\_`)
+	s = strings.ReplaceAll(s, "*", `\*`)
+	s = strings.ReplaceAll(s, "[", `\[`)
+	return strings.ReplaceAll(s, "`", "\\`")
+}
+
+// EscapeHTML escapes special characters for Telegram HTML parse mode.
+func EscapeHTML(s string) string {
+	s = strings.ReplaceAll(s, "&", "&")
+	s = strings.ReplaceAll(s, "<", "&lt;")
+	s = strings.ReplaceAll(s, ">", "&gt;")
+	return s
+}
+
+// EscapeMarkdownV2 escapes special characters for Telegram MarkdownV2.
+// https://core.telegram.org/bots/api#markdownv2-style
+func EscapeMarkdownV2(s string) string {
+	symbols := []string{"\\", "_", "*", "[", "]", "(", ")", "~", "`", ">", "#", "+", "-", "=", "|", "{", "}", ".", "!"}
+	for _, symbol := range symbols {
+		s = strings.ReplaceAll(s, symbol, "\\"+symbol)
+	}
+	return s
+}
+func EscapePunctuation(s string) string {
+	symbols := []string{".", "!", "-"}
+	for _, symbol := range symbols {
+		s = strings.ReplaceAll(s, symbol, "\\"+symbol)
+	}
+	return s
+}
 
 const VersionString = utils.VersionString