[Accessibility] Less than sign is encoded as `lt;` in Chat Accessible View

[jooyoungseo]

Type: Bug

CC @meganrogge

Reproducible Steps

1. In Copilot Chat View, ask "assign a variable in R?"

2. Open Accessible View

• Notes: <- sign is denoted with lt;-

VS Code version: Code 1.92.2 (fee1edb8d6d72a0ddff41e5f71a671c23ed924b9, 2024-08-14T17:29:30.058Z) OS version: Windows_NT x64 10.0.22631 Modes:

System Info

|Item|Value| |---|---| |CPUs|11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz (8 x 2611)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off| |Load (avg)|undefined| |Memory (System)|15.71GB (5.88GB free)| |Process Argv|. --crash-reporter-id 5c7bafb6-29df-4d8b-b617-c8de21a094b0| |Screen Reader|yes| |VM|0%|

Extensions (102)

Extension|Author (truncated)|Version ---|---|--- android-dev-ext|ade|1.4.0 Bookmarks|ale|13.5.0 openscad|Ant|1.3.1 spellright|ban|3.0.136 zoterolatex|bna|0.4.1 doxdocgen|csc|1.4.0 vscode-eslint|dba|3.0.10 vscode-quick-select|dba|0.2.9 vscode-deno|den|3.38.2 gitlens|eam|15.3.0 EditorConfig|Edi|0.16.4 prettier-vscode|esb|11.0.0 vscode-firefox-debug|fir|2.9.10 shell-format|fox|7.2.5 vscode-google-translate|fun|1.4.13 codespaces|Git|1.17.2 copilot|Git|1.223.1055 copilot-chat|Git|0.19.2024073102 remotehub|Git|0.62.0 vscode-github-actions|git|0.26.3 vscode-pull-request-github|Git|0.94.0 go|gol|0.42.0 overleaf-workshop|iam|0.13.2 cslpreview|igo|0.2.2 latex-workshop|Jam|10.1.0 lilypond-syntax|jea|0.1.1 scheme|jea|0.2.0 better-cpp-syntax|jef|1.27.1 commitlint|jos|2.6.0 google-search|kam|0.0.1 vscode-lua-format|Koi|1.3.8 vscode-js-annotations|lan|0.11.0 lilypond-formatter|lhl|0.2.3 lilypond-pdf-preview|lhl|0.2.8 lilypond-snippets|lhl|0.1.1 vslilypond|lhl|1.7.3 zotero|mbl|0.1.11 git-graph|mhu|1.30.0 vscode-docker|ms-|1.29.2 vscode-edge-devtools|ms-|2.1.5 black-formatter|ms-|2024.2.0 debugpy|ms-|2024.11.2024081401 flake8|ms-|2023.13.12291011 isort|ms-|2023.13.12071014 python|ms-|2024.13.2024081501 vscode-pylance|ms-|2024.8.1 jupyter|ms-|2024.7.0 jupyter-keymap|ms-|1.1.2 jupyter-renderers|ms-|1.0.19 vscode-jupyter-cell-tags|ms-|0.1.9 vscode-jupyter-slideshow|ms-|0.1.6 remote-containers|ms-|0.380.0 remote-ssh|ms-|0.113.1 remote-ssh-edit|ms-|0.86.0 remote-wsl|ms-|0.88.2 vscode-remote-extensionpack|ms-|0.25.0 azure-repos|ms-|0.38.0 cmake-tools|ms-|1.18.44 cpptools|ms-|1.21.6 cpptools-extension-pack|ms-|1.3.0 js-debug-nightly|ms-|2024.8.1517 live-server|ms-|0.4.14 powershell|ms-|2024.3.2 remote-explorer|ms-|0.4.3 remote-repositories|ms-|0.40.0 remote-server|ms-|1.5.2 vscode-github-issue-notebooks|ms-|0.0.130 vscode-selfhost-test-provider|ms-|0.3.25 vscode-serial-monitor|ms-|0.12.0 vscode-speech|ms-|0.10.0 vsliveshare|ms-|1.0.5936 autodocstring|njp|0.6.1 pandocciter|not|0.10.4 subtitles-editor|pep|1.1.7 shiny|Pos|1.0.0 shinyuieditor|pos|0.5.0 quarto|qua|1.114.0 r-debugger|RDe|0.5.4 java|red|1.33.0 vscode-xml|red|0.27.1 r|REd|2.8.4 multi-command|ryu|1.6.0 vscode-3dviewer|sle|0.2.2 vscode-deepl|soe|1.1.1 abc-music|sof|0.4.0 lua|sum|3.10.4 latex-utilities|tec|0.4.14 askbard|tpj|1.2.0 cmake|twx|0.0.17 errorlens|use|3.20.0 intellicode-api-usage-examples|Vis|0.2.8 vscodeintellicode|Vis|1.3.1 vscode-conventional-commits|viv|1.25.0 vscode-arduino|vsc|0.6.0 vscode-gradle|vsc|3.16.4 vscode-java-debug|vsc|0.58.0 vscode-java-dependency|vsc|0.24.0 vscode-java-pack|vsc|0.29.0 vscode-java-test|vsc|0.42.0 vscode-maven|vsc|0.44.0 markdown-all-in-one|yzh|3.6.2 grammarly|znc|0.24.0 (1 theme extensions excluded)

A/B Experiments

``` vsliv368:30146709 vspor879:30202332 vspor708:30202333 vspor363:30204092 vscod805cf:30301675 binariesv615:30325510 vsaa593:30376534 py29gd2263:31024239 c4g48928:30535728 azure-dev_surveyone:30548225 a9j8j154:30646983 962ge761:30959799 pythongtdpath:30769146 welcomedialog:30910333 pythonnoceb:30805159 asynctok:30898717 pythonregdiag2:30936856 pythonmypyd1:30879173 h48ei257:31000450 pythontbext0:30879054 accentitlementst:30995554 dsvsc016:30899300 dsvsc017:30899301 dsvsc018:30899302 cppperfnew:31000557 dsvsc020:30976470 pythonait:31006305 dsvsc021:30996838 01bff139:31013167 pythoncenvpt:31062603 a69g1124:31058053 dvdeprecation:31068756 dwnewjupyter:31046869 impr_priority:31102340 nativerepl1:31104043 refactort:31108082 pythonrstrctxt:31112756 wkspc-onlycs-c:31111717 nativeloc1:31118318 wkspc-ranged-c:31118571 ```

[meganrogge]

@mjbvz this is happening with the dompurify sanitize call (see the values of renderedMarkdown and sanitized. What would you suggest here?

I'm guessing this is fine in the case of the chat response bc it's actually rendered as markdown so the &lt is not shown, but for the accessible view, we render as plain text.

I imagine we shouldn't be calling sanitize rendered markdown on this content since it's not actually rendered?

[meganrogge]

/closedWith 54233bddb4075e95ac90504cd8a6aab87e9eccec

[vs-code-engineering[bot]]

        Issue marked as unreleased but unable to locate closing commit in issue timeline. You can manually reference a commit by commenting `\closedWith someCommitSha`, or directly add the `insiders-released` label if you know this has already been releaased