Hi. I am trying to extract name intials from a variable containing names. Since all names have their initials in capital letters, my attempt was to do the following work:

Code:
clear all

input str13 x
    "John Smith"
    "Linda Johnson"
    "Peter B. Brown"
end

g y = regexs(0) if regexm(x,"[A-Z]")
This way, the y variable contains, "J", "L" and "P". However, what I really want is "JS", "LJ" and "PBB".

I appreciate any hints on how can I solve this problem.

Thanks in advance.