行级元素只能通过更新块进行更新，所以还是使用 updateBlock 接口，有两种方式设置属性，一种是直接在 span 上带属性，另一种是使用 IAL 语法：

{
    "data": "foo <span data-type=\"text\" style=\"background-color: var(--b3-card-error-background); color: var(--b3-card-error-color);\" custom-data=\"test\">bar</span> baz",
    "dataType": "markdown",
    "id": "20230825093849-er9anul"
}

或者

{
    "data": "foo <span data-type=\"text\">bar</span>{: style=\"background-color: var(--b3-card-error-background); color: var(--b3-card-error-color);\" custom-data=\"test\"} baz",
    "dataType": "markdown",
    "id": "20230825093849-er9anul"
}

行级属性界面就不考虑提供了，这个能力主要由插件扩展发挥。

emmm那么右键菜单的接口呢？可否支持？不然就不清楚想操作的是哪个元素了

Hi there! I would like to join in in asking for support of span inline attribute lists (IALs) as syntax in the editor, for the end user. It would greatly expand the uses of SiYuan if we could leverage the existing ability to parse and store Kramdown span ials.

This would be extremely useful for SiYuan to have qualified links, e.g. modifying the example from the official documentation, annotate a link as being a reference (vs. e.g. an example)

This *is*{:.underline} some `code`{:#id}{:.class}.
A [link](test.html){:rel='reference'} and some **tools**{:.tools}.

@88250 could you consider again enabling the parsing of span IALs in the editor? It would be fine for me if it is behind a feature flag (or if it requires a keybinding such as Ctrl-Alt-i).

For example: this would immediately solve my question on how to query to access inline memos, and even better because I could attach the :::DEP property strictly to the anchor span.

@alvorithm Sorry, support for input in the editor is not considered, thank you.

Ok, understood.

Is there any other way for end users to annotate inline content so that the annotation can be later retrieved programmatically @88250 ?

There is no interaction UI available for end-users, this is recommended through plugins, as mentioned earlier #9038 (comment)