zulip/static/templates/message_controls.hbs

<div class="message_controls{{#status_message}} sender-status-controls{{/status_message}} no-select">
    {{#if msg/sent_by_me}}
    <div class="edit_content message_control_button" data-tooltip-template-id="view-source-tooltip-template"></div>
    <template id="edit-content-tooltip-template">
        {{#tr}}Edit message{{/tr}}
        {{hotkey_hints "E"}}
    </template>
    <template id="move-message-tooltip-template">
        {{#tr}}Move message{{/tr}}
        {{hotkey_hints "M"}}
    </template>
    <template id="view-source-tooltip-template">
        {{#tr}}View message source{{/tr}}
        {{hotkey_hints "E"}}
    </template>
    {{/if}}

    {{#unless msg/sent_by_me}}
    <div class="reaction_button message_control_button" data-tooltip-template-id="add-emoji-tooltip-template">
        <i class="fa fa-smile-o" aria-label="{{#tr}}Add emoji reaction{{/tr}} (:)" role="button" aria-haspopup="true" tabindex="0"></i>
    </div>
    <template id="add-emoji-tooltip-template">
        {{#tr}}Add emoji reaction{{/tr}}
        {{hotkey_hints ":"}}
    </template>
    {{/unless}}

    {{#unless msg/locally_echoed}}
    <div class="actions_hover message_control_button" data-tooltip-template-id="message-actions-tooltip-template" >
        <i class="zulip-icon zulip-icon-ellipsis-v-solid" role="button" aria-haspopup="true" tabindex="0" aria-label="{{#tr}}Message actions{{/tr}}"></i>
    </div>
    <template id="message-actions-tooltip-template">
        {{#tr}}Message actions{{/tr}}
        {{hotkey_hints "I"}}
    </template>
    {{/unless}}

    <div class="message_failed {{#unless msg.failed_request}}hide{{/unless}}">
        <div class="message_control_button failed_message_action" data-tippy-content="{{t 'Retry' }}">
            <i class="fa fa-refresh refresh-failed-message" aria-label="{{t 'Retry' }}" role="button" tabindex="0"></i>
        </div>

        <div class="message_control_button failed_message_action" data-tippy-content="{{t 'Cancel' }}">
            <i class="fa fa-times-circle remove-failed-message" aria-label="{{t 'Cancel' }}" role="button" tabindex="0"></i>
        </div>
    </div>

    {{#unless msg/locally_echoed}}
    <div class="star_container message_control_button {{#if msg/starred}}{{else}}empty-star{{/if}}" data-tooltip-template-id="{{#if msg/starred}}unstar{{else}}star{{/if}}-message-tooltip-template">
        <i role="button" tabindex="0" class="star fa {{#if msg/starred}}fa-star{{else}}fa-star-o{{/if}}"></i>
    </div>
    <template id="star-message-tooltip-template">
        <span class="starred-status">{{#tr}}Star this message{{/tr}}</span>
        {{hotkey_hints "Ctrl" "S"}}
    </template>
    <template id="unstar-message-tooltip-template">
        <span class="starred-status">{{#tr}}Unstar this message{{/tr}}</span>
        {{hotkey_hints "Ctrl" "S"}}
    </template>
    {{/unless}}

</div>