zulip/web/templates/modal_banner/unsubscribed_participants_warning_banner.hbs

{{#> modal_banner . }}
    <p class="banner_message">
        {{#if (eq selected_propagate_mode "change_one")}}
            {{#tr}}
                Message sender <z-user-names></z-user-names> is not subscribed to &nbsp;<z-stream></z-stream>.
                {{#*inline "z-user-names"}}({{{unsubscribed_participant_formatted_names_list}}}){{/inline}}
                {{#*inline "z-stream"}}<strong>{{> ../inline_decorated_channel_name stream=stream show_colored_icon=true}}</strong>{{/inline}}
            {{/tr}}

        {{else if few_unsubscribed_participants}}
            {{#tr}}
                Some topic participants <z-user-names></z-user-names> are not subscribed to &nbsp;<z-stream></z-stream>.
                {{#*inline "z-user-names"}}({{{unsubscribed_participant_formatted_names_list}}}){{/inline}}
                {{#*inline "z-stream"}}<strong>{{> ../inline_decorated_channel_name stream=stream show_colored_icon=true}}</strong>{{/inline}}
            {{/tr}}

        {{else}}
            {{#tr}}
                {unsubscribed_participants_count} topic participants are not subscribed to &nbsp;<z-stream></z-stream>.
                {{#*inline "z-stream"}}<strong>{{> ../inline_decorated_channel_name stream=stream show_colored_icon=true}}</strong>{{/inline}}
            {{/tr}}
        {{/if}}
    </p>

{{/modal_banner}}