JimParseCmd() function

Parses a [command] expression starting at pc->p. Positions the parser at the end of the command expression, sets pc->tend and possibly pc->missing.

Parses a braced expression starting at pc->p. Positions the parser at the end of the braced expression, sets pc->tend and possibly pc->missing.

Parses a quoted expression starting at pc->p. Positions the parser at the end of the quoted expression, sets pc->tend and possibly pc->missing. Returns the type of the token of the string, either JIM_TT_ESC (if it contains values which need to be [subst]ed) or JIM_TT_STR.