Hello,
MATLAB accepts a string within a string only when the inner string is enclosed within single quotes and not double quotes. Keeping this in mind, I modified the previous MATLAB answer as mentioned by you to also include string within a string:
S = "alpha{ beta} new {} new2 'This is a string' }";
T = ["alpha","beta", "{","}", "'"]; %added "'" as a delimiter to detect string within a string
[X,Y] = strsplit(S,T, 'CollapseDelimiters',false);
Y = erase(Y, "'"); % removing all occurrences of "'" from result as it is not needed
X = strtrim(X); % you forgot to mention, that you also want to remove whitespace
X(2,:) = [Y,""];
X(strlength(X)==0) = [];
Thus the output for this is:
"alpha" "{" "beta" "}" "new" "{" "}" "new2" "This is a string" "}"
