"-" now means the previous branch.

Signed-off-by: Sudhanshu Shekhar <sudshekha...@gmail.com>
Thanks-to: Junio C Hamano, Matthieu Moy, Eric Sunshine
---
Thank you all for your feedback. Please let me know if I am missing out on 
anything else.


 builtin/reset.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/builtin/reset.c b/builtin/reset.c
index 4c08ddc..02f33ef 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -192,6 +192,7 @@ static void parse_args(struct pathspec *pathspec,
 {
        const char *rev = "HEAD";
        unsigned char unused[20];
+       int substituted_minus = 0;
        /*
         * Possible arguments are:
         *
@@ -205,6 +206,10 @@ static void parse_args(struct pathspec *pathspec,
         */
 
        if (argv[0]) {
+               if (!strcmp(argv[0], "-")) {
+                       argv[0] = "@{-1}";
+                       substituted_minus = 1;
+               }
                if (!strcmp(argv[0], "--")) {
                        argv++; /* reset to HEAD, possibly with paths */
                } else if (argv[1] && !strcmp(argv[1], "--")) {
@@ -225,12 +230,14 @@ static void parse_args(struct pathspec *pathspec,
                        verify_non_filename(prefix, argv[0]);
                        rev = *argv++;
                } else {
+                       /* We were treating "-" as a commit and not a file */
+                       if (substituted_minus)
+                               argv[0] = "-";
                        /* Otherwise we treat this as a filename */
                        verify_filename(prefix, argv[0], 1);
                }
        }
        *rev_ret = rev;
-
        if (read_cache() < 0)
                die(_("index file corrupt"));
 
-- 
2.3.1.168.g0c82976.dirty

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