Please give feedback and suggest things I may have missed out on. 
I hope I have incorporated all the suggestions.

Signed-off-by: Sundararajan R <dyou...@gmail.com>
Thanks-to: Junio C Hamano
---
I have attempted to resolve the ambiguity when there exists a file named -
by communicating to the user that he/she can use ./- when he/she wants to refer
to the - file. I perform this check using the check_filename() function.

 builtin/reset.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/builtin/reset.c b/builtin/reset.c
index 4c08ddc..2bdd5cd 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 file_named_minus=0;
        /*
         * Possible arguments are:
         *
@@ -205,6 +206,12 @@ static void parse_args(struct pathspec *pathspec,
         */
 
        if (argv[0]) {
+               if (!strcmp(argv[0], "-") && !argv[1]) {
+                       if(!check_filename(prefix,"-"))
+                               argv[0]="@{-1}";
+                       else 
+                               file_named_minus=1;
+               }
                if (!strcmp(argv[0], "--")) {
                        argv++; /* reset to HEAD, possibly with paths */
                } else if (argv[1] && !strcmp(argv[1], "--")) {
@@ -226,7 +233,14 @@ static void parse_args(struct pathspec *pathspec,
                        rev = *argv++;
                } else {
                        /* Otherwise we treat this as a filename */
-                       verify_filename(prefix, argv[0], 1);
+                       if(file_named_minus) {
+                               die(_("ambiguous argument '-': both revision 
and filename\n"
+                                       "Use ./- for file named -\n"
+                                       "Use '--' to separate paths from 
revisions, like this:\n"
+                                       "'git <command> [<revision>...] -- 
[<file>...]'"));
+                       }
+                       else
+                               verify_filename(prefix, argv[0], 1);
                }
        }
        *rev_ret = rev;
-- 
2.1.0

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