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1. OPTIND value was not computed correctly when the argument was part of the option string (i.e. for "l:" "-l 1" was working "-l1" was not). (PR/2505). 2. OPTARG was not being unset in case of errors [in the non POSIX error case]. 3. optvar could be set to random values. 4. Option string starting with a : was not treated specially as POSIX specifies (if the option string starts with a :, then there is no error printed when there are missing option arguments or illegal options, and OPTARG and optvar are being set specially). 5. Implemented getopts "opts" optvar [arg]. The optional argument case was not implemented. To do: - what does Posix say about resetting the getopts state? Bash does it by setting OPTIND=0; is that correct? Should we be doing the same thing? - should we be using getopt(3) for everything internal to the shell? Is that feasible because we might need to handle multiple invocations at once.