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-rw-r--r--revision.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/revision.c b/revision.c
index 745b0d2..2cda7e0 100644
--- a/revision.c
+++ b/revision.c
@@ -642,14 +642,19 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
if (dotdot) {
unsigned char from_sha1[20];
char *next = dotdot + 2;
+ char *this = arg;
+ static const char HEAD[] = "HEAD";
*dotdot = 0;
if (!*next)
- next = "HEAD";
- if (!get_sha1(arg, from_sha1) && !get_sha1(next, sha1)) {
+ next = HEAD;
+ if (dotdot == arg)
+ this = HEAD;
+ if (!get_sha1(this, from_sha1) &&
+ !get_sha1(next, sha1)) {
struct commit *exclude;
struct commit *include;
- exclude = get_commit_reference(revs, arg, from_sha1, flags ^ UNINTERESTING);
+ exclude = get_commit_reference(revs, this, from_sha1, flags ^ UNINTERESTING);
include = get_commit_reference(revs, next, sha1, flags);
if (!exclude || !include)
die("Invalid revision range %s..%s", arg, next);