bug#62333: 30.0.50; Issue with tree-sitter syntax tree during certain changes

[Gregory Heytings]

> No, the idea is to create the parser with these restrictions to begin 
> with.

Could you perhaps explain, with some fictitious code, what kind of 
solution you imagine?  I'm not sure I understand (euphemism for: I'm sure 
I don't understand) the problem statement.

In what way would the restrictions you have in mind be different from 
those of a regular narrowing?

Also, would such a parser always/never/sometimes obey the user narrowing?