[BUG] .set option in macro can incorrectly parse

[blloyd75]

Bug Description

Steps to Reproduce

1. Create a small macro in an assembly file
   .macro saverestore2regs reg1:req, reg2:req, mode:req, size:req
   .set .Lcfa_offset, \size+\size
   .if \mode < 2
   .endif
   .endm

Expected Behavior

the .if should be the usual purplish color

Actual Behavior

the .if is white

Screenshots

Easy to replicate

Environment

• OS: Windows 11
• ArmLS Version: 0.16.0

Additional Context

It appears that macro parameters break this.

Logs/Error Messages

• I have searched for existing bug reports
• I have included all relevant information

[blloyd75]

Other odd lines that macro parameters appear to break.
.cfi_offset \reg2, \size - .Lcfa_offset
stp \reg1, \reg2, [sp, #0-\size-\size]! // Save FP, LR. SP -= 16. Offset -176 (Relative to original SP)
The issue affects other lines, but fixing these will probably address the others as well.