Add interactive menu regression

lib/rules_mgr.sh

@@ -216,7 +216,8 @@ cmd_add() {
   local proto_choice ipver_choice proto ipver lport tip tport desc
 
   print_section '添加新的转发规则'
-  proto_choice=$(prompt_select '请选择协议' 'TCP' 'UDP' 'TCP + UDP')
+  prompt_select_capture '请选择协议' 'TCP' 'UDP' 'TCP + UDP'
+  proto_choice=${PROMPT_SELECT_RESULT}
   case ${proto_choice} in
     0) proto=tcp ;;
     1) proto=udp ;;
@@ -225,12 +226,14 @@ cmd_add() {
   esac
 
   while true; do
-    lport=$(prompt_input '请输入本地监听端口' '')
+    prompt_input_capture '请输入本地监听端口' ''
+    lport=${PROMPT_INPUT_RESULT}
     validate_port "${lport}" && break
     log_warn '端口无效，请重新输入。'
   done
 
-  ipver_choice=$(prompt_select '请选择 IP 版本' '仅 IPv4' '仅 IPv6' '同时 IPv4 + IPv6')
+  prompt_select_capture '请选择 IP 版本' '仅 IPv4' '仅 IPv6' '同时 IPv4 + IPv6'
+  ipver_choice=${PROMPT_SELECT_RESULT}
   case ${ipver_choice} in
     0) ipver=4 ;;
     1) ipver=6 ;;
@@ -239,18 +242,21 @@ cmd_add() {
   esac
 
   while true; do
-    tip=$(prompt_input "$(rule_target_hint "${ipver}")" '')
+    prompt_input_capture "$(rule_target_hint "${ipver}")" ''
+    tip=${PROMPT_INPUT_RESULT}
     rule_validate_target "${tip}" "${ipver}" && break
     log_warn '目标地址无效，请重新输入。'
   done
 
   while true; do
-    tport=$(prompt_input '请输入目标端口' '')
+    prompt_input_capture '请输入目标端口' ''
+    tport=${PROMPT_INPUT_RESULT}
     validate_port "${tport}" && break
     log_warn '目标端口无效，请重新输入。'
   done
 
-  desc=$(prompt_input '请输入描述（可留空）' '')
+  prompt_input_capture '请输入描述（可留空）' ''
+  desc=${PROMPT_INPUT_RESULT}
   desc=$(rule_sanitize_desc "${desc}")
 
   printf '协议: %s\n' "$(rule_proto_label "${proto}")"
@@ -319,7 +325,8 @@ cmd_delete() {
   cmd_list 0
 
   while true; do
-    answer=$(prompt_input '请输入要删除的规则编号' '')
+    prompt_input_capture '请输入要删除的规则编号' ''
+    answer=${PROMPT_INPUT_RESULT}
     if [[ ${answer} =~ ^[0-9]+$ ]] && (( answer >= 1 && answer <= ${#RULES_CACHE[@]} )); then
       index=$((answer - 1))
       break