On 2015-10-16 at 19:07:34 +0200, Junio C Hamano <gits...@pobox.com> wrote:
> Tobias Klauser <tklau...@distanz.ch> writes:
>
> > Use parse-options to parse command-line options instead of a
> > hand-crafted implementation.
> >
> > This is a preparatory patch to simplify the introduction of the
> > --count-lines option in a follow-up patch.
>
> The second paragraph is probably of much lessor importance than one
> thing you forgot to mention: the users can now use a unique prefix
> of the option and say "stripspace --comment".
I didn't even know about that feature, but now that you've mentioned it
I will certainly make use of it more in the future :) And of course,
I'll adjust the commit message accordingly for v3.
> > +enum stripspace_mode {
> > + STRIP_DEFAULT = 0,
> > + STRIP_COMMENTS,
> > + COMMENT_LINES
> > +};
> >
> > int cmd_stripspace(int argc, const char **argv, const char *prefix)
> > {
> > struct strbuf buf = STRBUF_INIT;
> > - int strip_comments = 0;
> > - enum { INVAL = 0, STRIP_SPACE = 1, COMMENT_LINES = 2 } mode =
> > STRIP_SPACE;
> > -
> > - if (argc == 2) {
> > - if (!strcmp(argv[1], "-s") ||
> > - !strcmp(argv[1], "--strip-comments")) {
> > - strip_comments = 1;
> > - } else if (!strcmp(argv[1], "-c") ||
> > - !strcmp(argv[1], "--comment-lines")) {
> > - mode = COMMENT_LINES;
> > - } else {
> > - mode = INVAL;
> > - }
> > - } else if (argc > 1) {
> > - mode = INVAL;
> > - }
> > -
> > - if (mode == INVAL)
> > - usage(usage_msg);
>
> When given "git stripspace -s blorg", we used to set mode to INVAL
> and then showed the correct usage. But we no longer have a check
> that corresponds to the old INVAL thing, do we? Perhaps check argc
> to detect presence of an otherwise ignored non-option argument
> immediately after parse_options() returns?
Agreed, we should check it. I'll go with the implementation you
suggested in the follow-up message.
> > - if (strip_comments || mode == COMMENT_LINES)
> > + enum stripspace_mode mode = STRIP_DEFAULT;
> > +
> > + const struct option options[] = {
> > + OPT_CMDMODE('s', "strip-comments", &mode,
> > + N_("skip and remove all lines starting with comment
> > character"),
> > + STRIP_COMMENTS),
> > + OPT_CMDMODE('c', "comment-lines", &mode,
> > + N_("prepend comment character and blank to each
> > line"),
> > + COMMENT_LINES),
> > + OPT_END()
> > + };
> > +
> > + argc = parse_options(argc, argv, prefix, options, stripspace_usage,
> > + PARSE_OPT_KEEP_DASHDASH);
>
> What is the point of keep-dashdash here?
Likewise, it shouldn't be there as in your follow-up patch.
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