Screen reader misses out '!' when reading lines of code

[stevencl]

Screen reader turned on using NVDA

I arrow down to this line

if (!containsFunctionSig) {

The screen reader says "if containsFunctionSig" - i.e., it misses out the crucial '!' symbol.

Found when testing #3247

[stevencl]

I just discovered that this is a setting in NVDA. I turned on the punctuation symbol level to all in the voice settings dialog and then the '!' is read out, along with every other punctuation symbol (including tabs).