Merged PR 4585873: conhost: ingest OSS up to 8a976c0

Improve wide glyph support in UIA (GH-4946)
Add enhanced key support for ConPty (GH-5021)
Set DxRenderer non-text alias mode (GH-5149)
Reduce CursorChanged Events for Accessibility (GH-5196)
Add more object ID tracing for Accessibility (GH-5215)
Add SS3 cursor key encoding to ConPty (GH-5383)
UIA: Prevent crash from invalid UTR endpoint comparison (GH-5399)
Make CodepointWidthDetector::GetWidth faster (CC-3727)
add til::math, use it for float conversions to point, size (GH-5150)
Add support for renderer backoff, don't FAIL_FAST on 3x failures, add UI (GH-5353)
Fix a deadlock and a bounding rects issue in UIA (GH-5385)
Don't duplicate spaces from potentially-wrapped EOL-deferred lines (GH-5398)
Reimplement the VT tab stop functionality (CC-5173)
Clamp parameter values to a maximum of 32767. (CC-5200)
Prevent the cursor type being reset when changing the visibility (CC-5251)
Make RIS switch back to the main buffer (CC-5248)
Add support for the DSR-OS operating status report (CC-5300)
Update the virtual bottom location if the cursor moves below it (CC-5317)
ci: run spell check in CI, fix remaining issues (CC-4799) (CC-5352)
Set Cascadia Code as default font (GH-5121)
Show a double width cursor for double width characters (GH-5319)
Delegate all character input to the character event handler (CC-4192)
Update til::bitmap to use dynamic_bitset<> + libpopcnt (GH-5092)
Merged PR 4465022: [Git2Git] Merged PR 4464559: Console: Ingest OSS changes up to e055079
Correct scrolling invalidation region for tmux in pty w/ bitmap (GH-5122)
Render row-by-row instead of invalidating entire screen (GH-5185)
Make conechokey use ReadConsoleInputW by default (GH-5148)
Manually pass mouse wheel messages to TermControls (GH-5131)
This fixes C-M-space for WSL but not for Win32, but I'm not sure there's a problem in Win32 quite yet. (GH-5208)
Fix copying wrapped lines by implementing better scrolling (GH-5181)
Emit lines wrapped due to spaces at the end correctly (GH-5294)
Remove unneeded whitespace (CC-5162)

.github/actions/spell-check/advice.txt

@@ -0,0 +1,17 @@
+<details>
+<summary>
+:pencil2: Contributor please read this
+</summary>
+
+* If the items listed above are names, please add them to `.github/actions/spell-check/dictionary/names.txt`.
+* If they're APIs, you can add them to a file in `.github/actions/spell-check/dictionary/`.
+* If they're just things you're using, please add them to an appropriate file in `.github/actions/spell-check/whitelist/`.
+* If you need to use a specific token in one place and it shouldn't generally be used, you can
+add an item in an appropriate file in `.github/actions/spell-check/patterns/`.
+
+See the `README.md` in each directory for more information.
+</details>
+
+#### :warning: Reviewers
+At present, the action that triggered this message will not show its :x: in this PR unless the branch is within this repository.
+Thus, you **should** make sure that this comment has been addressed before encouraging the merge bot to merge this PR.

.github/actions/spell-check/dictionary/README.md

@@ -0,0 +1,20 @@
+# Dictionaries are lists of words to accept unconditionally
+
+While check spelling will complain about a whitelisted word
+which is no longer present, you can include things here even if
+they are not otherwise present in the repository.
+
+E.g., you could include a list of system APIs here, or potential
+contributors (so that if a future commit includes their name,
+it'll be accepted).
+
+### Files
+
+| File | Description |
+| ---- | ----------- |
+| [Dictionary](dictionary.txt) | Primary US English dictionary |
+| [Chinese](chinese.txt) | Chinese words |
+| [Japanese](japanese.txt) | Japanese words |
+| [Microsoft](microsoft.txt) | Microsoft brand items |
+| [Fonts](fonts.txt) | Font names |
+| [Names](names.txt) | Names of people |

.github/actions/spell-check/dictionary/apis.txt

@@ -0,0 +1,5 @@
+IMap
+ICustom
+IObject
+LCID
+rfind

.github/actions/spell-check/dictionary/chinese.txt

@@ -0,0 +1,5 @@
+CHINESEBIG
+choseong
+Jongseong
+Jungseong
+ssangtikeut