X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=rev-parse.c;h=7f66ae2db827c6ce0ee245ac416d2e80a937061f;hb=1ab661ddb7eb564c1c3cb97a512257860a651459;hp=f176c56f7f896df7d955d1f75e01c464f1aefaf0;hpb=65b5e41e24dd76e9cc272399f458857d5b13d63e;p=git.git

diff --git a/rev-parse.c b/rev-parse.c
index f176c56f..7f66ae2d 100644
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -160,6 +160,14 @@ static int show_file(const char *arg)
 	return 0;
 }
 
+static void die_badfile(const char *arg)
+{
+	if (errno != ENOENT)
+		die("'%s': %s", arg, strerror(errno));
+	die("'%s' is ambiguous - revision name or file/directory name?\n"
+	    "Please put '--' before the list of filenames.", arg);
+}
+
 int main(int argc, char **argv)
 {
 	int i, as_is = 0, verify = 0;
@@ -176,7 +184,7 @@ int main(int argc, char **argv)
 		if (as_is) {
 			if (show_file(arg) && as_is < 2)
 				if (lstat(arg, &st) < 0)
-					die("'%s': %s", arg, strerror(errno));
+					die_badfile(arg);
 			continue;
 		}
 		if (!strcmp(arg,"-n")) {
@@ -315,16 +323,17 @@ int main(int argc, char **argv)
 		dotdot = strstr(arg, "..");
 		if (dotdot) {
 			unsigned char end[20];
-			char *n = dotdot+2;
+			char *next = dotdot + 2;
+			char *this = arg;
 			*dotdot = 0;
-			if (!get_sha1(arg, sha1)) {
-				if (!*n)
-					n = "HEAD";
-				if (!get_sha1(n, end)) {
-					show_rev(NORMAL, end, n);
-					show_rev(REVERSED, sha1, arg);
-					continue;
-				}
+			if (!*next)
+				next = "HEAD";
+			if (dotdot == arg)
+				this = "HEAD";
+			if (!get_sha1(this, sha1) && !get_sha1(next, end)) {
+				show_rev(NORMAL, end, next);
+				show_rev(REVERSED, sha1, this);
+				continue;
 			}
 			*dotdot = '.';
 		}
@@ -342,7 +351,7 @@ int main(int argc, char **argv)
 		if (verify)
 			die("Needed a single revision");
 		if (lstat(arg, &st) < 0)
-			die("'%s': %s", arg, strerror(errno));
+			die_badfile(arg);
 	}
 	show_default();
 	if (verify && revs_count != 1)