Description of the Issue

Built-in syntax highlight for Shell files fails on double+single-quoted dollar sign " ' $ ' "

Steps to Reproduce the Issue

1. Create a new text file
2. Set language to Shell
3. Paste the following:

#Notepad++ 8.5.4 syntax highlight fault
#Language / S / Shell

#search for files not ending with LineFeed
fd . /root/scripts/ -t f -x sh -c "if tail -c1 {} | hexdump -c | head -1 | grep -v '\\n *$' ; then echo -e {}\\\n; fi"
echo FAULTY
echo " ' " REPAIR MAGIC

echo " $ " GOOD
echo ' $ ' GOOD
echo ' " $ "' GOOD

echo " ' $' " FAULTY
echo " ' " REPAIR MAGIC

for i in /*; do echo $i; done

Expected Behavior

All echo statements should be coloured equally

Actual Behavior

The two lines marked with FAULTY break the syntax highlight, the following content is colored like a string, until the REPAIR MAGIC lines correct it.

Debug Information

Notepad++ v8.5.4 (64-bit)
Build time : Jun 17 2023 - 20:42:45
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : OFF
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 22H2
OS Build : 19045.2965
Current ANSI codepage : 1250
Plugins :
mimeTools (2.9)
NppConverter (4.5)
NppExport (0.4)