[BUG] Batch Strings Not Colored or Indicated

Is there an existing issue for this?

• I have searched the existing issues

Is the issue reproducible in Notepad++ without plugin?

• I have tried Notepad++ without plugin

Is the issue reproducible in portable version of Notepad++?

• I have tried portable version of Notepad++

Does the issue affect SciTE?

• I have tried SciTE

Description of the Issue

When writing batch scripts, using " or ' comments never change encapsulated text from default color.

Steps To Reproduce

1. type a string encapsulated in " or '
2. color, bold, and italics remain unchanged from default text

Current Behavior

When writing batch, I use strings often for variable translation in file names. Since the string delimiters have no visible effect, it takes forever to track down missing quotation marks.

Expected Behavior

I expected the color to change to a readably and discernably.

Debug Information

Notepad++ v8.9.1   (64-bit)
Build time: Jan 18 2026 - 22:45:31
Scintilla/Lexilla included: 5.5.8/5.4.6
Boost Regex included: 1_90
pugixml included: 1.15
nlohmann JSON included: 3.12.0
Path: C:\Program Files\Notepad++\notepad++.exe
Command Line: "C:\Program Files\Notepad++\change.log" 
Admin mode: OFF
Local Conf mode: OFF
Cloud Config: OFF
Periodic Backup: ON
Placeholders: OFF
Scintilla Rendering Mode: SC_TECHNOLOGY_DEFAULT (0)
Multi-instance Mode: monoInst
asNotepad: OFF
File Status Auto-Detection: cdEnabledNew (for current file/tab only)
Dark Mode: ON
Display Info:
    primary monitor: 1920x1080, scaling 100%
    visible monitors count: 1
    installed Display Class adapters: 
        0000: Description - NVIDIA GeForce RTX 2060
        0000: DriverVersion - 32.0.15.9174
OS Name: Windows 10 Home (64-bit)
OS Version: 22H2
OS Build: 19045.6466
Current ANSI codepage: 1252
Plugins: 
    mimeTools (3.1)
    NppConverter (4.7)
    NppExport (0.4)

Anything else?

Reproduce the issue in Notepad++ without plugins by opening a batch script and entering strings enclosed in double or single quotes. Inspect how batch-language syntax highlighting handles those delimiters. Done means the enclosed text is visibly distinguished from default text so missing quotation marks are easier to find.