(new): rich message support

(fix): runtime reliability
(tests): regression coverage
(doc): v1.1 release notes

tgfmt/md.go

@@ -2,7 +2,6 @@ package tgfmt
 
 import (
 	"strconv"
-	"strings"
 )
 
 // Markdown is an escaped legacy Telegram Markdown fragment.
@@ -13,27 +12,16 @@ type Markdown string
 // EscapeMarkdown escapes special characters for legacy Telegram Markdown.
 //
 // Deprecated: Use EscapeMarkdownV2 instead.
-func EscapeMarkdown(s string) Markdown {
-	s = strings.ReplaceAll(s, "_", `\_`)
-	s = strings.ReplaceAll(s, "*", `\*`)
-	s = strings.ReplaceAll(s, "[", `\[`)
-	return Markdown(strings.ReplaceAll(s, "`", "\\`"))
-}
+func EscapeMarkdown(s string) Markdown { return Markdown(escapeMD(s)) }
 
 // Bold returns s wrapped as bold legacy Telegram Markdown text.
-func (s Markdown) Bold() Markdown {
-	return "*" + s + "*"
-}
+func (s Markdown) Bold() Markdown { return "*" + s + "*" }
 
 // Italic returns s wrapped as italic legacy Telegram Markdown text.
-func (s Markdown) Italic() Markdown {
-	return "_" + s + "_"
-}
+func (s Markdown) Italic() Markdown { return "_" + s + "_" }
 
 // Link returns s as a legacy Telegram Markdown text link.
-func (s Markdown) Link(url string) Markdown {
-	return "[" + s + "](" + Markdown(url) + ")"
-}
+func (s Markdown) Link(url string) Markdown { return "[" + s + "](" + Markdown(url) + ")" }
 
 // Mention returns s as a legacy Telegram Markdown user mention.
 func (s Markdown) Mention(userID int64) Markdown {
@@ -41,14 +29,10 @@ func (s Markdown) Mention(userID int64) Markdown {
 }
 
 // InlineCode returns s wrapped as inline code legacy Telegram Markdown text.
-func (s Markdown) InlineCode() Markdown {
-	return "`" + s + "`"
-}
+func (s Markdown) InlineCode() Markdown { return "`" + s + "`" }
 
 // BlockCode returns s wrapped as a legacy Telegram Markdown code block.
-func (s Markdown) BlockCode() Markdown {
-	return "```\n" + s + "\n```"
-}
+func (s Markdown) BlockCode() Markdown { return "```\n" + s + "\n```" }
 
 // BlockCodeLanguage returns s wrapped as a legacy Telegram Markdown code block.
 func (s Markdown) BlockCodeLanguage(lang string) Markdown {