Re: [PATCH v2 1/2] Refactor code asking the user for input interactively

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Apr 10, 2020, 14:01 UTC
Message-ID: <nycvar.QRO.7.76.6.2004101559540.46@tvgsbejvaqbjf.bet>
In-Reply-To: <cf6bdc4c-bacf-5de0-b0b3-255e66c7bc18@gmail.com>

Hi Dr Stolee,

On Fri, 10 Apr 2020, Derrick Stolee wrote:

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> On 4/10/2020 7:27 AM, Johannes Schindelin via GitGitGadget wrote:
> > From: Johannes Schindelin <johannes.schindelin@gmx.de>
> >
> > There are quite a few code locations (e.g. `git clean --interactive`)
> > where Git asks the user for an answer. In preparation for fixing a bug
> > shared by all of them, and also to DRY up the code, let's refactor it.
> >
> > Please note that most of these callers trimmed white-space both at the
> > beginning and at the end of the answer, instead of trimming only the
> > end (as the caller in `add-patch.c` does).
>
> add-patch also only trims the newline! This is still a good change.
>
> > THerefore, technically speaking, we change behavior in this patch. At
>
> Strange capitalization here.

I fixed it and force-pushed, waiting a little with submitting it in case there are more things reviewers point out.

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> > the same time, it can be argued that this is actually a bug fix.
> >
>
> > @@ -1158,9 +1159,8 @@ static int read_single_character(struct add_p_state *s)
> >  		return res;
> >  	}
> >
> > -	if (strbuf_getline(&s->answer, stdin) == EOF)
> > +	if (git_read_line_interactively(&s->answer) == EOF)
> >  		return EOF;
> > -	strbuf_trim_trailing_newline(&s->answer);
>
> (Pointing out the trailing newline trim here.)
>
> > +
> > +int git_read_line_interactively(struct strbuf *line)
> > +{
> > +	int ret = strbuf_getline_lf(line, stdin);
> > +
> > +	if (ret != EOF)
> > +		strbuf_trim_trailing_newline(line);
> > +
> > +	return ret;
> > +}
>
> This looks good. Do we need a trailing newline or something?
> The way the diff ends abruptly after the "}" line made me
> think so.

No, this file ends in that line, therefore it ends abruptly ;-)

If I add another newline, `git diff` shows a red `+` at the end, i.e. we consider it a white-space problem.

Thank you for your review! Dscho

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>
> Thanks,
> -Stolee
>
>