Check the argument as a revision at first. If it fails, then tries to
check it as an option, and finally as a pathspec.

Returns -1 when we have an ambiguous revision range, such as
"master..next", to allow the argument to get checked as an option before
calling die() from verify_non_filename(). This is because we are
allowing "-" to be given in a revision range, but making the revision
check first. Otherwise, an ambiguous argument that starts with
"-" (let's say an option) would die even though its normal behaviour is
to silently return. Instead we check for ambiguity in a revision after
making sure that the argument cannot be parsed as an option.

This problem is discussed in:
http://article.gmane.org/gmane.comp.version-control.git/265672

Signed-off-by: Kenny Lee Sin Cheong <kenny.le...@gmail.com>
---
 revision.c  | 61 +++++++++++++++++++++++++++++++++----------------------------
 sha1_name.c |  2 +-
 2 files changed, 34 insertions(+), 29 deletions(-)

diff --git a/revision.c b/revision.c
index 570945a..1ea290f 100644
--- a/revision.c
+++ b/revision.c
@@ -1516,7 +1516,10 @@ int handle_revision_arg(const char *arg_, struct 
rev_info *revs, int flags, unsi
 
                        if (!cant_be_filename) {
                                *dotdot = '.';
-                               verify_non_filename(revs->prefix, arg);
+                               if (is_inside_work_tree() && 
!is_inside_git_dir() &&
+                                   check_filename(revs->prefix, arg)) {
+                                       return -1;
+                               }
                        }
 
                        a_obj = parse_object(from_sha1);
@@ -2198,40 +2201,39 @@ int setup_revisions(int argc, const char **argv, struct 
rev_info *revs, struct s
        read_from_stdin = 0;
        for (left = i = 1; i < argc; i++) {
                const char *arg = argv[i];
-               if (arg[0] == '-' && arg[1] && !starts_with(arg + 1, "..")) {
-                       int opts;
-
-                       opts = handle_revision_pseudo_opt(submodule,
-                                               revs, argc - i, argv + i,
-                                               &flags);
-                       if (opts > 0) {
-                               i += opts - 1;
-                               continue;
-                       }
+               if (handle_revision_arg(arg, revs, flags, revarg_opt)) {
+                       if (arg[0] == '-' && arg[1] && !starts_with(arg + 1, 
"..")) {
+                               int opts;
+
+                               opts = handle_revision_pseudo_opt(submodule,
+                                                                 revs, argc - 
i, argv + i,
+                                                                 &flags);
+                               if (opts > 0) {
+                                       i += opts - 1;
+                                       continue;
+                               }
 
-                       if (!strcmp(arg, "--stdin")) {
-                               if (revs->disable_stdin) {
-                                       argv[left++] = arg;
+                               if (!strcmp(arg, "--stdin")) {
+                                       if (revs->disable_stdin) {
+                                               argv[left++] = arg;
+                                               continue;
+                                       }
+                                       if (read_from_stdin++)
+                                               die("--stdin given twice?");
+                                       read_revisions_from_stdin(revs, 
&prune_data);
                                        continue;
                                }
-                               if (read_from_stdin++)
-                                       die("--stdin given twice?");
-                               read_revisions_from_stdin(revs, &prune_data);
-                               continue;
-                       }
 
-                       opts = handle_revision_opt(revs, argc - i, argv + i, 
&left, argv);
-                       if (opts > 0) {
-                               i += opts - 1;
+                               opts = handle_revision_opt(revs, argc - i, argv 
+ i, &left, argv);
+                               if (opts > 0) {
+                                       i += opts - 1;
+                                       continue;
+                               }
+                               if (opts < 0)
+                                       exit(128);
                                continue;
                        }
-                       if (opts < 0)
-                               exit(128);
-                       continue;
-               }
-
 
-               if (handle_revision_arg(arg, revs, flags, revarg_opt)) {
                        int j;
                        if (seen_dashdash || *arg == '^')
                                die("bad revision '%s'", arg);
@@ -2249,6 +2251,9 @@ int setup_revisions(int argc, const char **argv, struct 
rev_info *revs, struct s
                        break;
                }
                else
+                       /* Make sure that a filename doesn't get interpreted as 
a revision */
+                       if (!seen_dashdash)
+                               verify_non_filename(revs->prefix, arg);
                        got_rev_arg = 1;
        }
 
diff --git a/sha1_name.c b/sha1_name.c
index 7a621ba..b99b1dc 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -483,7 +483,7 @@ static int get_sha1_basic(const char *str, int len, 
unsigned char *sha1,
                                break;
                        }
                }
-       } else if (len == 1 && str[0] == '-') {
+       } else if (len == 1 && str[0] == '-' && !str[1]) {
                nth_prior = 1;
        }
 
-- 
2.3.3.203.g8ffb468.dirty

--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to