From: Sundararajan R Date: Tue, 10 Mar 2015 15:38:02 GMT Subject: [v2 PATCH 1/2] reset: add '-' shorthand for '@{-1}' Message-ID: <1426001883-6423-1-git-send-email-dyoucme@gmail.com> Teaching reset the - shorthand involves checking if any file named '-' exists because it then becomes ambiguous as to whether the user wants to reset the file '-' or if he wants to reset the working tree to the previous branch. check_filename() is used to perform this check. A similar ambiguity occurs when the file @{-1} exits. Therefore, when the files '-' or '@{-1}' exist then the program dies with a message about the ambiguous argument. Helped-by: Junio C Hamano Helped-by: Eric Sunshine Signed-off-by: Sundararajan R --- Have made the modifications suggest by you, Eric. Removed the part where the user is told that he can use ./- instead. builtin/reset.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/builtin/reset.c b/builtin/reset.c index 4c08ddc..88ce0c5 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 +233,13 @@ 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 '--' to separate paths from revisions, like this:\n" + "'git [...] -- [...]'")); + } + else + verify_filename(prefix, argv[0], 1); } } *rev_ret = rev; -- 2.1.0