(new): rich message support

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

bot_opts_loader.go

@@ -127,8 +127,18 @@ func (codec BotOptsFileJSONCodec) Save(filename string, opts *BotOpts) error {
 	return SaveBotOptsFile(codec, filename, opts)
 }
 
+// EscapeEnv escapes an environment value for use inside a JSON string.
+func (codec BotOptsFileJSONCodec) EscapeEnv(s string) string {
+	data, _ := json.Marshal(s)
+	return string(data[1 : len(data)-1])
+}
+
 var envParameterRegex = regexp.MustCompile(`\{\{\s*(\w+)\s*\}\}`)
 
+type botOptsFileEnvEscaper interface {
+	EscapeEnv(string) string
+}
+
 // BotOptsFileCodec decodes and encodes BotOpts file formats.
 type BotOptsFileCodec interface {
 	FromBytes([]byte) (*BotOpts, error)
@@ -148,7 +158,7 @@ func LoadBotOptsFile(codec BotOptsFileCodec, filename string) (*BotOpts, error)
 	if err != nil {
 		return nil, err
 	}
-	data = expandEnvPlaceholdersInFile(data)
+	data = expandEnvPlaceholdersInFile(codec, data)
 	return codec.FromBytes(data)
 }
 
@@ -165,7 +175,7 @@ func SaveBotOptsFile(codec BotOptsFileCodec, filename string, opts *BotOpts) err
 	return nil
 }
 
-func expandEnvPlaceholdersInFile(data []byte) []byte {
+func expandEnvPlaceholdersInFile(codec BotOptsFileCodec, data []byte) []byte {
 	return envParameterRegex.ReplaceAllFunc(data, func(match []byte) []byte {
 		group := envParameterRegex.FindSubmatch(match)
 		if len(group) != 2 {
@@ -173,6 +183,9 @@ func expandEnvPlaceholdersInFile(data []byte) []byte {
 		}
 		key := group[1]
 		value := os.Getenv(string(key))
+		if escaper, ok := codec.(botOptsFileEnvEscaper); ok {
+			value = escaper.EscapeEnv(value)
+		}
 		return []byte(value)
 	})
 }