Bug 189161

Summary:	Searching for lowercase delta finds capital delta
Product:	WebKit	Reporter:	Myles C. Maxfield <mmaxfield>
Component:	Text	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	ap, mmaxfield, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	Unspecified

Description Myles C. Maxfield 2018-08-30 11:04:24 PDT

1. Open https://www.khronos.org/registry/vulkan/specs/1.1/html/vkspec.html#_texel_input_operations
2. ⌘F
3. Search for U+03B4 δ

Expected: U+0394 Δ is not found
Actual: U+0394 Δ is found

Comment 1 Radar WebKit Bug Importer 2018-08-30 23:28:26 PDT

<rdar://problem/43925547>

Comment 2 Alexey Proskuryakov 2018-08-31 09:42:39 PDT

> Expected: U+0394 Δ is not found

That's not intuitively correct. Why is that the expectation?

Comment 3 Myles C. Maxfield 2018-09-04 17:02:19 PDT

(In reply to Alexey Proskuryakov from comment #2)
> > Expected: U+0394 Δ is not found
> 
> That's not intuitively correct. Why is that the expectation?

These characters are used as variables in math formulas. They represent distinct variables.

Comment 4 Alexey Proskuryakov 2018-09-04 17:09:53 PDT

How will we distinguish that case from when they are used in genuine Greek text?

Comment 5 Myles C. Maxfield 2018-09-04 17:41:37 PDT

(In reply to Alexey Proskuryakov from comment #4)
> How will we distinguish that case from when they are used in genuine Greek
> text?

No idea. It's still a bug, though.

Comment 6 Alexey Proskuryakov 2018-09-05 09:20:10 PDT

I don't see anything actionable here. All letters have different meanings in math depending on case, so it doesn't makes sense to nitpick on delta.

Consider "o(N)" and "O(N)" - would that be a reason to claim that case insensitive search for "o" shouldn't match "O"? Delta is no different.