Nested square brackets for dictionaries cause problems

[alexr00]

The code with a problem is:

#!/bin/bash
declare -A a=();
a["[]"]=x;
b=${a["[]"]}; # this is incorrectly highlighted as part of a string
echo ${b}; # this too, it only ends after this double quote: " (this is highlighted as script)

It looks like:

It should look like:

Some notes about what the scopes are:

b=${a["[]"]};

b=${a scopes all appear to be ok
[ Also seems to be ok

punctuation.section.array.shell
meta.parameter-expansion
meta.expression.assignment.shell
meta.statement.shell
source.shell

"[ I would expect the " to start a string here

meta.parameter-expansion
meta.expression.assignment.shell
meta.statement.shell
source.shell

] this also should be part of a string

punctuation.section.array.shell
meta.parameter-expansion
meta.expression.assignment.shell
meta.statement.shell
source.shell

" Now a string is started, but really it should be ended

punctuation.definition.string.begin.shell
string.quoted.double.shell
meta.parameter-expansion
meta.expression.assignment.shell
meta.statement.shell
source.shell

Originally from @SkyLined in microsoft/vscode#202566

[jeff-hykin]

Situation was improved, no longer a cascading breakage. It was fixed on an earlier version, but is at least fixed on v1.8.5

[jeff-hykin]

(didn't mean to close), nested brackets are still not correctly highlighted, and may never be since it requires pretty advanced recursive regex to be able to do it in Textmate