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Deprecate the font HTML tag

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Rationale:
MSC4077 allows to deprecate HTML tags
that are deprecated in the WHATWG standard,
if they can be replaced by tags with the same feature.

`font` is deprecated and can be replaced by `span`
with the `data-mx-bg-color` and `data-mx-color` attributes.

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
This commit is contained in:
Kévin Commaille 2024-03-05 13:07:28 +01:00
parent 4e1b364015
commit e8a8548cbc
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1 changed files with 4 additions and 5 deletions
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9
content/client-server-api/modules/instant_messaging.md
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@ -43,10 +43,10 @@ were limited to `m.text`, `m.emote`, `m.notice`, and
Clients should limit the HTML they render to avoid Cross-Site Scripting,
HTML injection, and similar attacks. The strongly suggested set of HTML
tags to permit, denying the use and rendering of anything else, is:
`font`, `del`, `h1`, `h2`, `h3`, `h4`, `h5`, `h6`, `blockquote`, `p`,
`a`, `ul`, `ol`, `sup`, `sub`, `li`, `b`, `i`, `u`, `strong`, `em`,
`s`, `code`, `hr`, `br`, `div`, `table`, `thead`, `tbody`, `tr`,
`th`, `td`, `caption`, `pre`, `span`, `img`, `details`, `summary`.
`del`, `h1`, `h2`, `h3`, `h4`, `h5`, `h6`, `blockquote`, `p`, `a`, `ul`,
`ol`, `sup`, `sub`, `li`, `b`, `i`, `u`, `strong`, `em`, `s`, `code`,
`hr`, `br`, `div`, `table`, `thead`, `tbody`, `tr`, `th`, `td`,
`caption`, `pre`, `span`, `img`, `details`, `summary`.
{{% boxes/note %}}
{{% added-in v="1.10" %}}
@ -65,7 +65,6 @@ the tag.
| Tag | Permitted Attributes |
|--------|--------------------------------------------------------------------------------------------------------------------------------------------|
| `font` | `data-mx-bg-color`, `data-mx-color`, `color` |
| `span` | `data-mx-bg-color`, `data-mx-color`, `data-mx-spoiler` (see [spoiler messages](#spoiler-messages)) |
| `a` | `name`, `target`, `href` (provided the value is not relative and has a scheme matching one of: `https`, `http`, `ftp`, `mailto`, `magnet`) |
| `img` | `width`, `height`, `alt`, `title`, `src` (provided it is a [Matrix Content (`mxc://`) URI](#matrix-content-mxc-uris)) |