On Wed, Nov 14 2018, Johannes Schindelin via GitGitGadget wrote:
> From: Johannes Schindelin <johannes.schindelin@xxxxxx>
>
> It is a good idea to error out early upon seeing, say, `-Cbad`, rather
> than starting the rebase only to have the `--am` backend complain later.
>
> Let's do this.
>
> The only options accepting parameters which we pass through to `git am`
> (which may, or may not, forward them to `git apply`) are `-C` and
> `--whitespace`. The other options we pass through do not accept
> parameters, so we do not have to validate them here.
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
> ---
> builtin/rebase.c | 12 +++++++++++-
> t/t3406-rebase-message.sh | 7 +++++++
> 2 files changed, 18 insertions(+), 1 deletion(-)
>
> diff --git a/builtin/rebase.c b/builtin/rebase.c
> index 96ffa80b71..571cf899d5 100644
> --- a/builtin/rebase.c
> +++ b/builtin/rebase.c
> @@ -1064,12 +1064,22 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
> }
>
> for (i = 0; i < options.git_am_opts.argc; i++) {
> - const char *option = options.git_am_opts.argv[i];
> + const char *option = options.git_am_opts.argv[i], *p;
> if (!strcmp(option, "--committer-date-is-author-date") ||
> !strcmp(option, "--ignore-date") ||
> !strcmp(option, "--whitespace=fix") ||
> !strcmp(option, "--whitespace=strip"))
> options.flags |= REBASE_FORCE;
> + else if (skip_prefix(option, "-C", &p)) {
> + while (*p)
> + if (!isdigit(*(p++)))
> + die(_("switch `C' expects a "
> + "numerical value"));
> + } else if (skip_prefix(option, "--whitespace=", &p)) {
> + if (*p && strcmp(p, "warn") && strcmp(p, "nowarn") &&
> + strcmp(p, "error") && strcmp(p, "error-all"))
> + die("Invalid whitespace option: '%s'", p);
> + }
> }
>
> if (!(options.flags & REBASE_NO_QUIET))
> diff --git a/t/t3406-rebase-message.sh b/t/t3406-rebase-message.sh
> index 0392e36d23..2c79eed4fe 100755
> --- a/t/t3406-rebase-message.sh
> +++ b/t/t3406-rebase-message.sh
> @@ -84,4 +84,11 @@ test_expect_success 'rebase --onto outputs the invalid ref' '
> test_i18ngrep "invalid-ref" err
> '
>
> +test_expect_success 'error out early upon -C<n> or --whitespace=<bad>' '
> + test_must_fail git rebase -Cnot-a-number HEAD 2>err &&
> + test_i18ngrep "numerical value" err &&
> + test_must_fail git rebase --whitespace=bad HEAD 2>err &&
> + test_i18ngrep "Invalid whitespace option" err
> +'
> +
The combination of this gitster/js/rebase-am-options and my
gitster/ab/rebase-in-c-escape-hatch breaks tests under
GIT_TEST_REBASE_USE_BUILTIN=false for obvious reasons. The C version is
now more strict.
