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From: Garima Singh <garimasigit@gmail.com>
To: Garima Singh via GitGitGadget <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Garima Singh <garima.singh@microsoft.com>
Subject: Re: [PATCH v2 1/1] quote: handle null and empty strings in sq_quote_buf_pretty()
Date: Mon, 26 Aug 2019 11:24:45 -0400
Message-ID: <CAN+QWEZU2FqkH1jWnv==owKLsMk8XNXJh6PpF6njvB6MmKt+Dw@mail.gmail.com> (raw)
In-Reply-To: <b9a68598d79724849995283e6967f1c52843c048.1566830682.git.gitgitgadget@gmail.com>

Thanks for the review Junio! I really appreciate it and look forward
to hear what you think of the updated patch.

Cheers!
Garima Singh


On Mon, Aug 26, 2019 at 10:44 AM Garima Singh via GitGitGadget
<gitgitgadget@gmail.com> wrote:
>
> From: Garima Singh <garima.singh@microsoft.com>
>
> The sq_quote_buf_pretty() function does not emit anything when
> the incoming string is empty, but the function is to accumulate
> command line arguments, properly quoted as necessary, and the
> right way to add an argument that is an empty string is to show
> it quoted, i.e. ''. We warn the caller with the BUG macro if they
> pass in a NULL.
>
> Reported by: Junio Hamano <gitster@pobox.com>
> Signed-off-by: Garima Singh <garima.singh@microsoft.com>
> ---
>  quote.c          | 12 ++++++++++++
>  t/t0014-alias.sh |  8 ++++++++
>  2 files changed, 20 insertions(+)
>
> diff --git a/quote.c b/quote.c
> index 7f2aa6faa4..6d0f8a22a9 100644
> --- a/quote.c
> +++ b/quote.c
> @@ -48,6 +48,18 @@ void sq_quote_buf_pretty(struct strbuf *dst, const char *src)
>         static const char ok_punct[] = "+,-./:=@_^";
>         const char *p;
>
> +       /* In case of null tokens, warn the user of the BUG in their call. */
> +       if (!src)
> +               BUG("BUG can't append a NULL token to the buffer");
> +
> +       /* In case of empty tokens, add a '' to ensure they
> +        * don't get inadvertently dropped.
> +        */
> +       if (!*src) {
> +               strbuf_addstr(dst, "''");
> +               return;
> +       }
> +
>         for (p = src; *p; p++) {
>                 if (!isalpha(*p) && !isdigit(*p) && !strchr(ok_punct, *p)) {
>                         sq_quote_buf(dst, src);
> diff --git a/t/t0014-alias.sh b/t/t0014-alias.sh
> index a070e645d7..9c176c7cbb 100755
> --- a/t/t0014-alias.sh
> +++ b/t/t0014-alias.sh
> @@ -37,4 +37,12 @@ test_expect_success 'looping aliases - internal execution' '
>  #      test_i18ngrep "^fatal: alias loop detected: expansion of" output
>  #'
>
> +test_expect_success 'run-command parses empty args properly, using sq_quote_buf_pretty' '
> +       cat >expect <<-EOF &&
> +       fatal: cannot change to '\''alias.foo=frotz foo '\'''\'' bar'\'': No such file or directory
> +       EOF
> +       test_expect_code 128 git -C "alias.foo=frotz foo '\'''\'' bar" foo 2>actual &&
> +       test_cmp expect actual
> +'
> +
>  test_done
> --
> gitgitgadget

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-20 19:35 [PATCH 0/1] " Garima Singh via GitGitGadget
2019-08-20 19:35 ` [PATCH 1/1] " Garima Singh via GitGitGadget
2019-08-20 20:29   ` Junio C Hamano
2019-08-21 15:22     ` Junio C Hamano
2019-08-20 20:32   ` Junio C Hamano
2019-08-26 14:44 ` [PATCH v2 0/1] " Garima Singh via GitGitGadget
2019-08-26 14:44   ` [PATCH v2 1/1] " Garima Singh via GitGitGadget
2019-08-26 15:24     ` Garima Singh [this message]
2019-08-26 16:20       ` Junio C Hamano
2019-10-07 16:17   ` [PATCH v3 0/1] " Garima Singh via GitGitGadget
2019-10-07 16:17     ` [PATCH v3 1/1] quote: handle numm and empty strings in sq_quote_buf_pretty Garima Singh via GitGitGadget
2019-10-07 17:08       ` Garima Singh
2019-10-07 17:27       ` Eric Sunshine
2019-10-07 17:47         ` Garima Singh
2019-10-07 19:38     ` [PATCH v4 0/1] quote: handle null and empty strings in sq_quote_buf_pretty() Garima Singh via GitGitGadget
2019-10-07 19:38       ` [PATCH v4 1/1] sq_quote_buf_pretty: don't drop empty arguments Garima Singh via GitGitGadget
2019-10-08  3:16         ` Junio C Hamano
2019-10-08 16:40       ` [PATCH v5 0/1] quote: handle null and empty strings in sq_quote_buf_pretty() Garima Singh via GitGitGadget
2019-10-08 16:40         ` [PATCH v5 1/1] sq_quote_buf_pretty: don't drop empty arguments Garima Singh via GitGitGadget

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