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bisect: don't use invalid oid as rev when starting
In 06f5608 (bisect--helper: `bisect_start` shell function partially in C, 2019-01-02), we changed the following shell code: - rev=$(git rev-parse -q --verify "$arg^{commit}") || { - test $has_double_dash -eq 1 && - die "$(eval_gettext "'\$arg' does not appear to be a valid revision")" - break - } - revs="$revs $rev" into: + char *commit_id = xstrfmt("%s^{commit}", arg); + if (get_oid(commit_id, &oid) && has_double_dash) + die(_("'%s' does not appear to be a valid " + "revision"), arg); + + string_list_append(&revs, oid_to_hex(&oid)); + free(commit_id); In case of an invalid "arg" when "has_double_dash" is false, the old code would "break" out of the argument loop. In the new C code though, `oid_to_hex(&oid)` is unconditonally appended to "revs". This is wrong first because "oid" is junk as `get_oid(commit_id, &oid)` failed and second because it doesn't break out of the argument loop. Not breaking out of the argument loop means that "arg" is then not treated as a path restriction (which is wrong). Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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