Description of the Issue

Notepad++ identifies and color-matches XML tags based on a case-insensitive search. For example, the tag <fileName> will be matched to the closing tag of </filename>. (Note the differing capitalization of the letter "N".) However, the XML standard is case-sensitive. Additionally, C# compiled into Javascript via Unity follows the XML standard, generating a runtime exception when parsing an XML file that contains case-insensitive tag-matching.

Steps to Reproduce the Issue

1. Create an opening tag of <fileName> in an XML file edited in Notepad++
2. Create a closing tag of </filename> in the same file
3. Observe that Notepad++ colors both tags in purple to indicate a match

Expected Behavior

I would expect the tags to not be identified as a match as they do not match per the XML standard and at least one implementation of that standard.

Actual Behavior

Notepad++ identifies the tags as a match.

Debug Information

Notepad++ v7.9.5 (64-bit)
Build time : Mar 21 2021 - 02:13:17
Path : C:\Program Files\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS Name : Windows 10 Pro (64-bit)
OS Version : 1809
OS Build : 17763.1577
Current ANSI codepage : 1252
Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll NppExport.dll