From: Johannes Schindelin <johannes.schindelin@xxxxxx>
In the `SPECIFYING RANGES` section of gitrevisions[7], two ways are
described to specify commit ranges that `range-diff` does not yet
accept: "<commit>^!" and "<commit>^-<n>".
Let's accept them, by parsing them via the revision machinery and
looking for at least one interesting and one uninteresting revision in
the resulting `pending` array.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
range-diff.c | 19 ++++++++++++++++++-
t/t3206-range-diff.sh | 8 ++++++++
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/range-diff.c b/range-diff.c
index 9b93e08e8407..07e212d5bb8c 100644
--- a/range-diff.c
+++ b/range-diff.c
@@ -11,6 +11,7 @@
#include "pretty.h"
#include "userdiff.h"
#include "apply.h"
+#include "revision.h"
struct patch_util {
/* For the search for an exact match */
@@ -567,5 +568,21 @@ int show_range_diff(const char *range1, const char *range2,
int is_range_diff_range(const char *arg)
{
- return !!strstr(arg, "..");
+ char *copy = xstrdup(arg); /* setup_revisions() modifies it */
+ const char *argv[] = { "", copy, "--", NULL };
+ int i, positive = 0, negative = 0;
+ struct rev_info revs;
+
+ init_revisions(&revs, NULL);
+ if (setup_revisions(3, argv, &revs, 0) == 1) {
+ for (i = 0; i < revs.pending.nr; i++)
+ if (revs.pending.objects[i].item->flags & UNINTERESTING)
+ negative++;
+ else
+ positive++;
+ }
+
+ free(copy);
+ object_array_clear(&revs.pending);
+ return negative > 0 && positive > 0;
}
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 6eb344be0312..e217cecac9ed 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -150,6 +150,14 @@ test_expect_success 'simple A B C (unmodified)' '
test_cmp expect actual
'
+test_expect_success 'A^! and A^-<n> (unmodified)' '
+ git range-diff --no-color topic^! unmodified^-1 >actual &&
+ cat >expect <<-EOF &&
+ 1: $(test_oid t4) = 1: $(test_oid u4) s/12/B/
+ EOF
+ test_cmp expect actual
+'
+
test_expect_success 'trivial reordering' '
git range-diff --no-color master topic reordered >actual &&
cat >expect <<-EOF &&
--
gitgitgadget
